Daily Dive #118 · Prompt 6 of 7 · November 10, 2026
Krillion answers: “Name a flower that naturally blooms blue, purple, or red”
Krillion accepted 7,482 answers for this prompt: 1 One in a Krillion, 7200 Deep Cut, 255 Rare, 20 Schooler and 6 Plankton. The 100-point gem starts with “H” — it is listed first below, followed by every other answer from rarest to most common.
One in a Krillion: Hot lips. Its red bracts look like a pair of human lips.
7482 accepted answers
One in a Krillion · 100 pts (1)
- Hot lipsIts red bracts look like a pair of human lips.
Deep Cut · 85 pts (7200)
- 'Aku
- 'Aku 'Aku
- 'Awikiwiki
- 'Oha Kepau
- 'Oha Wai Nui
- 'Ohe Makai
- 'Uiwi
- Abajo Fleabane
- Abbeville Iris
- Abelia
- Aboriginal Prickly Apple
- Abrams' Allium
- Abrams' Live Forever
- Abrams' Lupine
- Abrams' Oxytheca
- Abrams' Woollystar
- Abrams's Alumroot
- Absaroka Beardtongue
- Abutilon
- Achimenes
- Achira
- Ackerman's Milkvetch
- Acorn Buckwheat
- Acuna's Star Orchid
- Acute Indian Paintbrush
- Adam and Eve
- Addison's Leather Flower
- Adhesive Rehmannia
- Adobe Beardtongue
- Adobe Lily
- Adobe Navarretia
- Adriatic bellflower
- Aechmea
- Aerides
- African blue basil
- African blue sage
- African Corn Flag
- African Rosemallow
- Agardh Lupine
- Agastache
- Ahihi
- Air plant
- Ajuga
- Akia
- Akiahala
- Akiohala
- Akoko
- Akulikuli Aeae
- Alabama Blazing Star
- Alabama Gladecress
- Alabama Hedgenettle
- Alabama Larkspur
- Alabama Leather Flower
- Alabama Pitcherplant
- Alabama Skullcap
- Aladdin's Slippers
- Alakai Swamp Lobelia
- Alakai Swamp Violet
- Alameda County Thistle
- Alaska Blue-eyed Grass
- Alaska Bog Willow
- Alaska Kitten Tails
- Alaska Primrose
- Alaska Saxifrage
- Alaska Violet
- Alaskan Glacier Buttercup
- Alaskan Phlox
- Alberta Beardtongue
- Albuquerque Prairie Clover
- Alder
- Alderleaf Mountain Mahogany
- Alefeld's Pea
- Alena
- Aleutian Cress
- Aleutian Selfheal
- Aleutian Speedwell
- Aleutian Wormwood
- Alexander's Rock Aster
- Alfambrilla
- Alice Eastwood's Fleabane
- Alkali Aster
- Alkali Desertparsley
- Alkali Mariposa Lily
- Alkali Marsh Aster
- Alkali Milkvetch
- Alkali Sandmat
- Alkali Sunflower
- Alkali-pod
- Alkanet
- Allegheny Monkeyflower
- Allscale Saltbush
- Alpenrose
- Alpine Arctic Cudweed
- Alpine Aster
- Alpine Bartsia
- Alpine Bedstraw
- Alpine Besseya
- Alpine Bluebells
- Alpine Catchfly
- Alpine clematis
- Alpine Clover
- Alpine Collomia
- Alpine columbine
- Alpine flax
- Alpine Fleabane
- Alpine Gentian
- Alpine Jacob's-ladder
- Alpine Jewel Flower
- Alpine Knapweed
- Alpine Laurel
- Alpine Leafy-bract Aster
- Alpine Lewisia
- Alpine Meadow-rue
- Alpine Milkvetch
- Alpine Mountainsorrel
- Alpine Northern-rockcress
- Alpine Paintbrush
- Alpine Pennycress
- Alpine Phacelia
- Alpine Primrose
- Alpine Sagebrush
- Alpine Sand-verbena
- Alpine Sandmat
- Alpine Saw-sepal Penstemon
- Alpine Saxifrage
- Alpine sea holly
- Alpine Sheep Sorrel
- Alpine Shooting Star
- Alpine skullcap
- Alpine Smelowskia
- Alpine snowbell
- Alpine Speedwell
- Alpine Spicy Wintergreen
- Alpine Springbeauty
- Alpine Sulfur-flowered Wild Buckwheat
- Alpine Sweetvetch
- Alpine Tetramolopium
- Alpine thistle
- Alpine toadflax
- Alpine Waterleaf
- Alpine Willow
- Alpine Woodsorrel
- Alpinegold
- Alpinia
- Alternate-leaved Butterfly Bush
- Alumroot
- Alumroot Brookfoam
- Alva Day's Gilia
- Alvord Milkvetch
- Alyssum Evening Primrose
- Alyssumleaf Phlox
- American Alpine Speedwell
- American Alumroot
- American basketflower
- American Bellflower
- American Bluehearts
- American Dragonhead
- American Elm
- American False Pennyroyal
- American Fly Honeysuckle
- American germander
- American Golden Saxifrage
- American hazelnut
- American Hogpeanut
- American Hornbeam
- American Lopseed
- American Pokeweed
- American Saw-wort
- American Searocket
- American Smoke Tree
- American Speedwell
- American Spurred Gentian
- American vetch
- American Water-willow
- American Waterwort
- American wisteria
- Ames' Milkvetch
- Amethyst Aster
- Amethyst Stickseed
- Amphibious Lupine
- Amsonia
- Anadyr Draba
- Anchusa
- Andean lupin
- Anderson Larkspur
- Anderson Thornbush
- Anderson's Campion
- Anderson's Lupine
- Anderson's Milkvetch
- Anderson's Mountaincrown
- Andrews' Clover
- Andrews' Lady's-slipper
- Androsace Monkeyflower
- Angel's fishing rod
- Angle Leafed Miterwort
- Angle Stemed Buckwheat
- Angled Sandmint
- Anglepod
- Anglestem Buckwheat
- Anglestem Indian Mallow
- Anil De Pasto
- Anini
- Anise hyssop
- Anise-scented sage
- Annual Blue-eyed Grass
- Annual Candyleaf
- Annual Checkerbloom
- Annual Desert Milkvetch
- Annual Mitra
- Annual phlox
- Annual Polemonium
- Annual Psathyrotes
- Annual Sandwort
- Annual Skeletonweed
- Annual Townsend Daisy
- Annual Windmills
- Anoda
- Antelope Island Skeletonplant
- Antelope Valley Beardtongue
- Antelope-horns
- Anthony Peak Larkspur
- Anticosti Iris
- Anticosti Island Aster
- Apache Beardtongue
- Apache Buckwheat
- Apache Bush
- Apache Hedgehog Cactus
- Apache Lobelia
- Apache Milkvetch
- Apalachicola Aster
- Apalachicola False Rosemary
- Apalachicola Lobelia
- Apalachicola Toadflax
- Apetalous Catchfly
- Aphelandra
- Apothecary's rose
- Appalachian Blazing Star
- Appalachian Gentian
- Appalachian Mountainmint
- Appalachian Violet
- Appendage Brodiaea
- Appendaged Waterleaf
- Apple of Peru
- Applegate's Milkvetch
- Aquarius Paintbrush
- Aquarius Plateau Beardtongue
- Arabis
- Arburua Ranch Jewel Flower
- Arcane Milkvetch
- Arching Buckbrush
- Arching Rock Cress
- Arctic Alpine Fleabane
- Arctic Alpine Forget-me-not
- Arctic Aster
- Arctic Bellflower
- Arctic Blackberry
- Arctic Campion
- Arctic Dogwood
- Arctic Eyebright
- Arctic False Wallflower
- Arctic Locoweed
- Arctic Lousewort
- Arctic lupine
- Arctic Primrose
- Arctic-flower
- Argentinian Biddy Biddy
- Arid Northern Clarkia
- Arid Tansyaster
- Arid Throne Fleabane
- Arisaema
- Aristea
- Arizona Alum-root
- Arizona Anoda
- Arizona Beardtongue
- Arizona Blue-eyes
- Arizona Bluecurls
- Arizona Bluehearts
- Arizona Buckwheat
- Arizona Clematis
- Arizona Desert Thorn
- Arizona Dudleya
- Arizona Eryngo
- Arizona Fiestaflower
- Arizona Fleabane
- Arizona Foldwing
- Arizona Hedgehog Cactus
- Arizona Honeysuckle
- Arizona Ipomopsis
- Arizona Jewelflower
- Arizona lupine
- Arizona Mariposa Lily
- Arizona Milkvetch
- Arizona Mimosa
- Arizona Monardella
- Arizona Monkshood
- Arizona Necklacepod
- Arizona nettlespurge
- Arizona Passionflower
- Arizona Phacelia
- Arizona Phlox
- Arizona Sandmat
- Arizona Spinystar
- Arizona Thistle
- Arizona Ticktrefoil
- Arizona Valerian
- Arizona Water-willow
- Arkansas Bedstraw
- Arkansas bluestar
- Arkansas Dozedaisy
- Arkansas Ironweed
- Arkansas Leastdaisy
- Arkansas Penstemon
- Arnebia
- Arnold Buckeye
- Aromatic aster
- Aromatic Canyon Gooseberry
- Aromatic False Pennyroyal
- Aromatic Indian Breadroot
- Arrasa Con Todo
- Arrow Thelypody
- Arrow-leaf Thelypody
- Arrowleaf violet
- Arrowweed
- Arroyo Fameflower
- Arroyo lupine
- Artichoke
- Asarina
- Ash Beardtongue
- Ash Gray Indian Paintbrush
- Ash Meadows Milkvetch
- Ash-colored Speedwell
- Ashen Milkvetch
- Ashland Lupine
- Ashland Thistle
- Ashoka tree
- Ashy Sandmat
- Asiatic Dayflower
- Asparagus pea
- Aspen Bluebells
- Aspen fleabane
- Aspen Pea
- Aster de Pringle
- Astilbe
- Astrantia
- Atkinson's Tickseed
- Atlantic Camas
- Atlantic Pigeonwings
- Attwood's Phacelia
- Atwood's Beardtongue
- Atwood's Beeblossom
- Atwood's Phacelia
- Aubrieta
- Aunt Lucy
- Auricula
- Austin Knotweed
- Austin's Beardtongue
- Austin's Milkvetch
- Australasian Catchbird Tree
- Autumn Coralroot
- Autumn gentian
- Autumn sage
- Autumn squill
- Auwahi Schiedea
- Aven Nelson's Phacelia
- Awapa Fleabane
- Awl-leaf Mudwort
- Awned Mountainmint
- Awnpetal Meadow Beauty
- Axil-flower
- Ayenia
- Aztec Gilia
- Aztec lily
- Aztec Milkvetch
- Azure Monkshood
- Azure Penstemon
- Baboon flower
- Bach's Calicoflower
- Bacopa
- Bagpod
- Bahama Nightshade
- Bahaman Aster
- Baikal skullcap
- Bailey's Buckwheat
- Bailey's Hedgehog Cactus
- Baja Bird's-beak
- Baja Desert-thorn
- Baja fairy duster
- Baja Lily
- Baja Pincushionplant
- Bajada Lupine
- Baker's Delphinium
- Baker's Globemallow
- Baker's Lupine
- Baker's Phacelia
- Bakersfield Cactus
- Bald Bedstraw
- Bald Daisy
- Baldwin's Eryngo
- Balfour's Touch-me-not
- Ballhead Waterleaf
- Balloonbush
- Balloonpod Milkvetch
- Balsam
- Balsam Bird's-foot Trefoil
- Balsam Mountain Gentian
- Bamboo Iris
- Bamboo orchid
- Banana
- Bandanna Daisy
- Banded Trinity
- Banksia
- Barbara's-buttons
- Barbary nut
- Barbed Skullcap
- Barkeria
- Barleria
- Barneby Reed-mustard
- Barneby's Aster
- Barneby's Beardtongue
- Barneby's Indian Paintbrush
- Barneby's Phacelia
- Barneby's Thistle
- Barneby's Wildcabbage
- Barr's Milkvetch
- Barrel cactus
- Barren Valley Collomia
- Barrens Silky Aster
- Barrett's Penstemon
- Bartram's Airplant
- Bartram's Ixia
- Basalt Fleabane
- Basalt Larkspur
- Basalt Milkvetch
- Basalt Springparsley
- Bashful Penstemon
- Basil
- Basil Beebalm
- Basil Mountainmint
- Basil thyme
- Basin Bellflower
- Basin Fleabane
- Bastard balm
- Bastard Draba Milkvetch
- Bastard Milkvetch
- Bat flower
- Bat-faced Cuphea
- Bay Forget-me-not
- Bay Lobelia
- Bay Starvine
- Beach False Foxglove
- Beach morning glory
- Beach Naupaka
- Beach pea
- Beach Pinweed
- Beach Sand Verbena
- Beach Shieldpod
- Beach Verbena
- Beach vitex
- Beachhead Iris
- Bead Pinweed
- Beadle's Mountainmint
- Beaked Clarkia
- Beaked Mock Vervain
- Beaked Skeleton-weed
- Beaked Spiny Polygala
- Bean
- Bear River Fleabane
- Bear River Range Beardtongue
- Bear Valley Checkerbloom
- Bear Valley Milkvetch
- Bear's breeches
- Bearded Clover
- Bearded Grasspink
- Bearded Jewel Flower
- Bearded Lupine
- Bearded Monkeyflower
- Bearded Prairie Clover
- Beardlip Penstemon
- Beath's Milkvetch
- Beatley's Milkvetch
- Beatley's Phacelia
- Beautiful Aster
- Beautiful Bluebells
- Beautiful False Foxglove
- Beautiful Fleabane
- Beautiful Hulsea
- Beautiful Indian Paintbrush
- Beautiful Phacelia
- Beautiful Rockcress
- Beautiful Sandwort
- Beautyberry
- Beaver Indian Breadroot
- Beavertail Cactus
- Beavertail Grass
- Beckwith's Clover
- Beckwith's Milkvetch
- Beckwith's Rock Cress
- Beckwith's Violet
- Bee orchid
- Beegum Onion
- Beesianum Jasmine
- Beethistle
- Beggarslice
- Bejar Clover
- Bell heather
- Bell-flower Prickly Pear
- Bellevalia
- Bellflower Beardtongue
- Bellshape Gilia
- Bellyache bush
- Ben Franklin's Penstemon
- Bengal clock vine
- Benniebush
- Bent Alligator-flag
- Bent Avens
- Bentflower Milkvetch
- Bentley's Coral Root
- Bentonite Desertparsley
- Bergenia
- Berlandier's Hedgehog Cactus
- Berlandier's Lobelia
- Berlandier's Nettlespurge
- Berlandier's Wolfberry
- Bernard's Hybrid Violet
- Berry's Beardtongue
- Beschorneria
- Bessey's Locoweed
- Bessey's Stickseed
- Betatakin Fiddleleaf
- Bethlehem sage
- Betony
- Betonyleaf Brickellbush
- Betonyleaf Thoroughwort
- Beyrich's Fleabane
- Bicknell's Cranesbill
- Bicknell's Milkvetch
- Bicolor Fanmustard
- Big Bear Valley Phlox
- Big Bend Anisacanthus
- Big Bend Barometerbush
- Big Bend bluebonnet
- Big Bend Foxtail Cactus
- Big Bend Ringstem
- Big Bend Woodyaster
- Big Betony
- Big Cypress Star Orchid
- Big Deervetch
- Big Horn Fleabane
- Big Red Sage
- Big Tree Checkerbloom
- Big-mouth Star Orchid
- Bigbract Verbena
- Bigelow's Bristlehead
- Bigelow's Clematis
- Bigelow's Fleabane
- Bigelow's Linanthus
- Bigelow's Monkeyflower
- Bigelow's Ragged Rock Flower
- Bigelow's tansyaster
- Bigelow's Thoroughwort
- Bigflower Groundsmoke
- Bigleaf Aster
- Bigleaf Clover
- Bigleaf lupine
- Bigleaf Wildcabbage
- Bigleaf Witch-hazel
- Bigpod Lady's Nightcap
- Bigroot Blue-eyed Grass
- Bigroot Geranium
- Bigroot Prickly Pear
- Bigseed Biscuitroot
- Bill Williams Mountain Giant Hyssop
- Billbergia
- Bingen Lupine
- Bird-on-nest
- Bird's Beak Lousewort
- Bird's-eye gilia
- Bird's-eye primrose
- Bird's-foot violet
- Birdbill Dayflower
- Birdnest Buckwheat
- Birdnest Milkvetch
- Bishop's Milkvetch
- Bissell's Hybrid Violet
- Bitter Creek Phacelia
- Bitter Gooseberry
- Bitter vetch
- Bitterroot
- Bitterroot Rockcress
- Bittersweet nightshade
- Black Calabash
- Black calla
- Black Canyon Gilia
- Black cumin
- Black Dalea
- Black False Hellebore
- Black Flowered Figwort
- Black horehound
- Black Huckleberry
- Black River Beardtongue
- Black sage
- Black Sandspurry
- Black Swallow-wort
- Black vanilla orchid
- Black Vetch
- Black-eyed Susan vine
- Blackberry Lily
- Blackfoot Groundsmoke
- Blackhead Fleabane
- Blackish Locoweed
- Blacktack Phacelia
- Bladder Senna
- Blaine Fishhook Cactus
- Blair's Wirelettuce
- Blanchard's Verbena
- Blazing star
- Bleeding heart vine
- Bletilla
- Blochman's Dudleya
- Blochman's Fleabane
- Blochman's Larkspur
- Blodgett's Sage
- Blood iris
- Blood lily
- Blood Milkwort
- Blood-red trumpet vine
- Bloody cranesbill
- Bloomer's Aster
- Blowout Beardtongue
- Blue antler orchid
- Blue Barrel Cactus
- Blue beard orchid
- Blue Boneset
- Blue Bugloss
- Blue butterfly bush
- Blue butterwort
- Blue cohosh
- Blue dawn flower
- Blue daze
- Blue dicks
- Blue disa
- Blue Dwarf Fleabane
- Blue evergreen hydrangea
- Blue fairy orchid
- Blue fleabane
- Blue funnel lily
- Blue ginger
- Blue howittia
- Blue Huckleberry
- Blue lace flower
- Blue lady orchid
- Blue leschenaultia
- Blue lettuce
- Blue Limestone Columbine
- Blue Milkwort
- Blue Mistflower
- Blue Mountain Buckwheat
- Blue Mountain Catchfly
- Blue Mountain Onion
- Blue Mountain Penstemon
- Blue Mountain Rockcress
- Blue Mountainheath
- Blue Mudplantain
- Blue mustard
- Blue nasturtium
- Blue Nodding Locoweed
- Blue passionflower
- Blue penstemon
- Blue pimpernel
- Blue pincushion
- Blue plantain lily
- Blue potato bush
- Blue Pygmyflower
- Blue Ridge Skullcap
- Blue Ridge Wakerobin
- Blue Sanicle
- Blue satin flower
- Blue skullcap
- Blue snakeweed
- Blue sow-thistle
- Blue star creeper
- Blue star sun orchid
- Blue star water lily
- Blue Stem Beardtongue
- Blue Stickseed
- Blue tinsel lily
- Blue toadflax
- Blue vervain
- Blue Waterhyssop
- Blue waterleaf
- Blue Waxweed
- Blue Witch Nightshade
- Blue wood aster
- Blue Wood-sorrel
- Blue woodruff
- Blue-eyed African daisy
- Blue-eyed Mary
- Blue-leaf Beardtongue
- Bluebeard
- Bluebell creeper
- Blueblossom
- Bluebonnet Lupine
- Bluebowls
- Bluecup
- Bluecurls
- Blueflower Eryngo
- Bluehead Gilia
- Bluehearts
- Bluepod Rock Cress
- Bluerod
- Bluet
- Bluff Lupine
- Bluffs Gayfeather
- Blumberg Rosita
- Bluntlobe Cyanea
- Bluntlobe Lupine
- Blushing Bromeliad
- Blushing Buckwheat
- Bodie Hills Rock Cress
- Bodin's Milkvetch
- Bog Anemone
- Bog Clermontia
- Bog Lobelia
- Bog sage
- Bog Stenogyne
- Boivin's Rock Cress
- Bolander's Bedstraw
- Bolander's Lily
- Bolander's Linanthus
- Bolander's Milkvetch
- Bolander's Monkey-flower
- Bolander's Pea
- Bolander's Phacelia
- Bolinas Ceanothus
- Bolivian-coriander
- Boltonia
- Bomarea
- Bonneville Pea
- Bonneville Shootingstar
- Boophone
- Booth's Evening Primrose
- Boquillas Sandmat
- Boreal Carnation
- Boreal Fleabane
- Boreal Locoweed
- Boreal Phlox
- Boronia
- Borrego Bedstraw
- Borrego Milkvetch
- Botta's Clarkia
- Bottle gentian
- Boundary Peak Rockcress
- Bouquet Aster
- Bouquet Mudplantain
- Bourgov's Milkvetch
- Bouvardia
- Bowltube Iris
- Boxthorn
- Boyce Thompson Hedgehog Cactus
- Boyden Cave Gilia
- Boykin's Clusterpea
- Boykin's Lobelia
- Bract Milkweed
- Bracted Blazing Star
- Bracted Lousewort
- Bracted Owl's Clover
- Bracted Spiderwort
- Bracted Twistflower
- Bracted Utah Fleabane
- Bractless Hedge Hyssop
- Branched Blazing Star
- Branched Foldwing
- Branched Indian Clover
- Branched Pencil Cholla
- Branching Phacelia
- Brand's Phacelia
- Brand's Star Phacelia
- Brandegee's Beardtongue
- Brandegee's Clarkia
- Brandegee's Clover
- Brandegee's Fumewort
- Brandegee's Milkvetch
- Brandegee's Onion
- Brandegee's Tansyaster
- Brandegee's Woollystar
- Braun's Erigeron
- Braun's Hybrid Violet
- Braun's Rock Cress
- Braunton's Milkvetch
- Brazilian Bellflower
- Brazilian Jackbean
- Brazilian nightshade
- Brazilian red cloak
- Brazos Milkvetch
- Brazos Penstemon
- Breadroot
- Breedlove's Buckwheat
- Brewer's Fleabane
- Brewer's Indian Paintbrush
- Brewer's Jewel Flower
- Brewer's lupine
- Brewer's Milkvetch
- Brewer's Monardella
- Brewer's Monkey-flower
- Brewer's Phacelia
- Brewer's Redmaids
- Brewer's Rockcress
- Brewer's Snapdragon
- Brewster County Barometerbush
- Brickellbush
- Brickellbush Aster
- Bridger Mountain Alum-root
- Bridges' Brodiaea
- Bridges' Gilia
- Bridges' penstemon
- Bright Navarretia
- Brightblue Speedwell
- Brillantaisia
- Brimeura
- Bristlecup Sandmat
- Bristleflower Collomia
- Bristleleaf Chaffhead
- Bristly Bellflower
- Bristly Bird's Beak
- Bristly Gentian
- Bristly Indian-paintbrush
- Bristly Jewelflower
- Bristly Nama
- Bristly Stickseed
- Bristlystem Checkerbloom
- British Columbia Wild Ginger
- Brittlestem Hemp-nettle
- Britton's Skullcap
- Broad bean
- Broad Fleabane
- Broad Leaved Mudwort
- Broad Pod Anelsonia
- Broad-leaf Beardtongue
- Broad-leaf Bush-monkey-flower
- Broad-leaved Aster
- Broad-leaved helleborine
- Broad-leaved Marsh Orchid
- Broadbeard Beardtongue
- Broadfruit Mariposa Lily
- Broadkeel Milkvetch
- Broadleaf Blolly
- Broadleaf Bluebells
- Broadleaf Four O'clock
- Broadleaf Gilia
- Broadleaf Lupine
- Broadleaf Milkvetch
- Broadleaf Papala
- Broadleaf Woodsorrel
- Broadlobe Phacelia
- Broadpetal Gentian
- Broadpod Jewelflower
- Broadpod Nicker
- Broadsepal Yellowhood
- Broadtooth Hedgenettle
- Broadtooth Monkeyflower
- Brodiaea
- Brook Wake-robin
- Brooklime
- Broom
- Broom Crowberry
- Broom Dalea
- Broom Milkwort
- Broomrape
- Browallia
- Brown Bells
- Brown Knapweed
- Brown-eyed Susan
- Brown's Pea
- Brown's Peony
- Brown's Waterleaf
- Browne's Savory
- Brownea
- Brownies
- Brownplume Wirelettuce
- Brownspine Hedgehog Cactus
- Browse Milkvetch
- Bruneau Mariposa Lily
- Bruneau Milkvetch
- Brunfelsia
- Brunnera
- Brunsvigia
- Brushland Shrubverbena
- Bryant's Beardtongue
- Bryce Canyon Indian Paintbrush
- Buckeye
- Buckhorn Cholla
- Buckley's Penstemon
- Buckroot
- Buckskin Mountains Cliff Milkvetch
- Buckwheat
- Buckwheat Milkvetch
- Buddha belly plant
- Buell Park Phacelia
- Buff Fleabane
- Buffalo clover
- Bulbocodium
- Bulbophyllum
- Bulbous Springparsley
- Bull Clover
- Bull thistle
- Bullfrog Mountain Pea
- Bur Pincushionplant
- Burdock
- Burlew's Onion
- Burmese fishtail palm
- Burnet
- Burnt orchid
- Burridge's Greenthread
- Burrowing Four O'Clock
- Bush clock vine
- Bush clover
- Bush lupine
- Bush Morning-glory
- Bush Pea
- Bush vetch
- Bush Vetchling
- Bush's Poppy Mallow
- Bush's Purple Coneflower
- Bush's Skullcap
- Bushy Bird's Beak
- Bushy Buckwheat
- Bushy Lippia
- Butte County Checker Mallow
- Butte County Fritillary
- Butte County Western Rosinweed
- Butte Desertparsley
- Butterbur
- Butterfly Mariposa Lily
- Butterfly Violet
- Butterfly weed
- Butterwort
- Button Sage
- Button snakeroot
- Byron Larkspur
- Byzantine Gladiolus
- Cactus Apple
- Cactus Flat Gilia
- Caddo False Foxglove
- Cadillo Liso
- Cahaba Daisy Fleabane
- Cahaba Prairie Clover
- Cahaba Torch
- Cainville Thistle
- Calamint
- Calanthe
- Calcareous Morning-glory
- Calceolaria
- Calder's Rock Cress
- Calibrachoa
- Calico Aster
- Calico flower
- Calico Monkeyflower
- California Acaena
- California Ayenia
- California Beardtongue
- California Bee Plant
- California Bolandra
- California Box Thorn
- California Brickellbush
- California Brodiaea
- California Broom Rape
- California Butterwort
- California Cholla
- California Cottonrose
- California Cranesbill
- California Crucillo
- California Dutchman's Pipe
- California Fagonbush
- California Fairyfan
- California False Indigo
- California False Pennyroyal
- California Four O'Clock
- California fuchsia
- California Gilia
- California Globe Mallow
- California Gooseberry
- California Groundcone
- California Harebell
- California Hedgenettle
- California Indian Breadroot
- California Indian pink
- California Indigobush
- California Larkspur
- California Loosestrife
- California Milkweed
- California Mock Sandwort
- California Pea
- California Peony
- California Phacelia
- California Pitcherplant
- California Rock Cress
- California Rockflower
- California Sage
- California Sealavender
- California Spineflower
- California Sun Cup
- California Verbena
- California Violet
- California Waterwort
- California Wood-sorrel
- Calistoga Buck Brush
- Calistoga Pincushionplant
- Callaway Milkvetch
- Calthaleaf Phacelia
- Calyx-nose Monkeyflower
- Camas
- Camatta Canyon Amole
- Camphor Pluchea
- Campo Clarkia
- Canaan Mountain Beardtongue
- Canada Beachhead Iris
- Canada Gooseberry
- Canada thistle
- Canadian Horseweed
- Canadian Lousewort
- Canadian River Wild Buckwheat
- Canadian Summer Bluet
- Canadian White Violet
- Canadian Wild Ginger
- Canaigre Dock
- Canary Island bellflower
- Canary Violet
- Canby's Aster
- Canby's Kittentail
- Canby's Lobelia
- Candelabra primula
- Candelabrum Monkeyflower
- Candelabrum Sage
- Candia Tulip
- Candle Cholla
- Candle Larkspur
- Candy Barrel
- Candy Lily
- Candytuft
- Cane Spring Suncup
- Canker Berry
- Canna
- Cannonball tree
- Canoe Milkvetch
- Cantua
- Canyon Bird's-foot Trefoil
- Canyon Creek Alumroot
- Canyon Gooseberry
- Canyon Liveforever
- Canyon Morning-glory
- Canyon Sage
- Canyon Schiedea
- Canyon Spiderwort
- Cape aloe
- Cape forget-me-not
- Cape fuchsia
- Cape honeysuckle
- Cape Krause Sorrel
- Cape primrose
- Cape Sable Orchid
- Cape Sable Thoroughwort
- Cape Sable Whiteweed
- Cape tulip
- Capitate Valerian
- Caraway Thyme
- Carawayleaf Gilia
- Cardinal Beardtongue
- Cardinal Catchfly
- Cardinal climber
- Cardinal's Feather
- Cardinal's guard
- Cardoon
- Cardwell's Beardtongue
- Carey's Smartweed
- Carib wood
- Caribbean Applecactus
- Caricature Plant
- Carlott's Violet
- Carlson's Cyanea
- Carmel Ceanothus
- Carmel Valley Malacothrix
- Carolina allspice
- Carolina anemone
- Carolina Birds-in-a-nest
- Carolina Doll's Daisy
- Carolina Elephantsfoot
- Carolina Fanwort
- Carolina Geranium
- Carolina Larkspur
- Carolina Laurel
- Carolina Leaf-flower
- Carolina Lily
- Carolina Milkweed
- Carolina Phlox
- Carolina Sealavender
- Carolina Springbeauty
- Carolina Thistle
- Carolina Verbena
- Carolina Vetch
- Carolina Violet
- Carolina Wild Petunia
- Carolina Wolfberry
- Carolina Yellow Loosestrife
- Carpathian bellflower
- Carpenter's Ground Cherry
- Carrizo Mountain Sandmat
- Carrizo Sands Leatherflower
- Carrot Buckwheat
- Carrotleaf Biscuitroot
- Carson Range Rockcress
- Carson Valley Monkeyflower
- Cartagena Prairie Clover
- Carveseed
- Cary's Beardtongue
- Cascade Alpine Campion
- Cascade Aster
- Cascade Bilberry
- Cascade Calicoflower
- Cascade Fleabane
- Cascade Lake Ceanothus
- Cascade Lily
- Cascade Onion
- Case's Milkvetch
- Cast-iron Plant
- Castetter's Milkvetch
- Castle Crags Bellflower
- Castle Lake Bedstraw
- Castle Trail Yellow Loosestrife
- Cat's-tongue
- Catalina Beardtongue
- Catalina Island Mountain Mahogany
- Catalina Mahogany
- Catalina Nightshade
- Catawba rhododendron
- Catchfly Prairie Gentian
- Caterpillar Phacelia
- Caterpillars
- Cathedral Bluff Dwarf Gentian
- Catleaf
- Catnip
- Caucasian scarlet poppy
- Caucasian stonecrop
- Cautleya
- Cavanillesia
- Cedar Breaks Milkvetch
- Cedar Breaks Springparsley
- Cedar sage
- Cedros Milkvetch
- Centerville Brazos-mint
- Central Idaho Beardtongue
- Ceratostigma
- Chaco Milkvetch
- Chaconia
- Chaffhead
- Chaffless Saw-wort
- Chaffseed
- Chalk Dudleya
- Challis Milkvetch
- Chambers Paintbrush
- Chamisso Bush Lupine
- Chamisso's Larkspur
- Chamisso's Lousewort
- Chamissos' Scaevola
- Champlain Hybrid Violet
- Chandelier Plant
- Changeable Phacelia
- Changing forget-me-not
- Channel Islands Paintbrush
- Chaparral Beargrass
- Chaparral Bellflower
- Chaparral Bird's-foot Trefoil
- Chaparral Brodiaea
- Chaparral Broomrape
- Chaparral Buckwheat
- Chaparral Clarkia
- Chaparral Currant
- Chaparral Gilia
- Chaparral Pea
- Chaparral Whitethorn
- Chaparral Yucca
- Chapman's Blazing Star
- Chapman's Butterwort
- Chapman's Sage
- Charleston Lousewort
- Charleston Mountain Angelica
- Charleston Mountain Kittentails
- Charleston Mountain Pussytoes
- Charleston Mountain Violet
- Charleston Phacelia
- Charlotte's Phacelia
- Charming Centaury
- Charming Woody-aster
- Chaste tree
- Chatham Island forget-me-not
- Chattahoochee River Wakerobin
- Chautle Livingrock
- Checker Lily
- Checkerbloom
- Cheerful Sunflower
- Chelan Beardtongue
- Chenille plant
- Chenille Prickly Pear
- Cherry Skullcap
- Chestnut Milkvetch
- Chia
- Chickpea
- Chickweed Oxytheca
- Chicory Leaved Stephanomeria
- Chihuahua Prickly Pear
- Chihuahuan Beehive Cactus
- Chihuahuan Cinquefoil
- Chihuahuan Fishhook Cactus
- Chihuahuan Flax
- Chihuahuan Fleabane
- Chihuahuan Lupine
- Chihuahuan Prairie Clover
- Chihuahuan Snoutbean
- Chihuahuan Stickseed
- Chihuahuan Vervain
- Child's Blue Eyed Mary
- Chilean Bird's-foot Trefoil
- Chilean blue crocus
- Chilean blue lily
- Chilean Clover
- Chilean firebush
- Chilean glory flower
- Chilean lantern tree
- Chilean potato vine
- Chili pepper
- Chiltern gentian
- China aster
- Chinaberry
- Chinese astilbe
- Chinese Camp Brodiaea
- Chinese chaste tree
- Chinese desert-thorn
- Chinese forget-me-not
- Chinese foxglove
- Chinese hosta
- Chinese houses
- Chinese lilac
- Chinese plumbago
- Chinese redbud
- Chinese Thorn-apple
- Chinese Trumpet Creeper
- Chinese violet cress
- Chinese wild ginger
- Chiricahua Dwarf Gentian
- Chiricahua Mountain Columbine
- Chiricahua Mountain Dwarf Gentian
- Chiricahua Mountain Larkspur
- Chiricahua Mountain Mock Vervain
- Chiricahua Mountain Mudwort
- Chiricahua Mountains Milkvetch
- Chirita
- Chisos Agave
- Chisos Mountain Buckwheat
- Chisos Mountain Crested Coralroot
- Chisos Mountain Pinweed
- Chitalpa
- Chocolate Drops
- Chocolate Lily
- Chocolate vine
- Cholla
- Chorro Creek Bog Thistle
- Christmas bells
- Chukchi Primrose
- Chukotka Locoweed
- Chuparosa
- Cibola Milkvetch
- Cicada Milkvetch
- Cienega Seca Flowery Puncturebract
- Cigar plant
- Cima Milkvetch
- Cimarron Buckwheat
- Cineraria
- Cinquefoil
- Cismontane Minuartia
- Cithara Buckwheat
- Clackamas Iris
- Clammy Buckwheat
- Clammy Clover
- Clamshell Orchid
- Claret cup cactus
- Clark Valley Larkspur
- Clarkia
- Clary sage
- Clasping Jewelflower
- Clasping Milkweed
- Clasping Warea
- Claspingleaf Doll's Daisy
- Claspingleaf Wild Cabbage
- Clausen's Violet
- Clavate Fruited Primrose
- Clay Mariposa Lily
- Clay Reed-mustard
- Clay's Hibiscus
- Clear Creek Fleabane
- Clearwater Phlox
- Cleburn's Beardtongue
- Cleft Phlox
- Cleft Violet
- Cleftleaf Wildheliotrope
- Clementine Sun Cup
- Clermontia
- Clerodendrum
- Cleveland sage
- Cleveland's Beardtongue
- Cleveland's Shooting Star
- Cliff Bedstraw
- Cliff Desertdandelion
- Cliff Dwarf-primrose
- Cliff Dweller
- Cliff Indian Paintbrush
- Cliff Maids
- Cliff Milkvetch
- Cliff Morning-glory
- Cliff Palace Milkvetch
- Cliff Penstemon
- Cliff Spurge
- Cliff Thistle
- Climbing Aster
- Climbing Bedstraw
- Climbing Dock
- Climbing Fumatory
- Climbing Milkweed
- Climbing Monk's Hood
- Climbing snapdragon
- Clingman's Hedgenettle
- Clivia
- Clokey's Campion
- Clokey's Fleabane
- Clokey's Gilia
- Clokey's Milkvetch
- Clokey's Nightshade
- Closed Throated Beardtongue
- Cloudcroft Phacelia
- Cloudcroft Thistle
- Clove
- Clove Phlox
- Club Fruit Willowherb
- Clubhair Mariposa Lily
- Clusia
- Clusius's Tulip
- Cluster Stemmed Willowherb
- Clustered bellflower
- Clustered Booth's Desert Primrose
- Clustered Broomrape
- Clustered Green Gentian
- Clustered Mountainmint
- Clustered Poppy-mallow
- Clustered Sage
- Clustered Thistle
- Clusterspike False Indigo
- Clustervine
- Coachella Milkvetch
- Coast Dudleya
- Coast Indian Paintbrush
- Coast Lily
- Coast Phacelia
- Coast Range Linanthus
- Coast Range Mariposa Lily
- Coastal Cholla
- Coastal Dunes Milkvetch
- Coastal Eryngo
- Coastal Gilia
- Coastal Hedgenettle
- Coastal Larkspur
- Coastal Onion
- Coastal Phacelia
- Coastal Plain Balm
- Coastal Plain Blue-eyed Grass
- Coastal Plain Joe Pye Weed
- Coastal Plain Mountainmint
- Coastal Prickly Pear
- Coastal Red Indian Paintbrush
- Coastal Sea Rocket
- Cobb Mountain Lupine
- Cobblestone Milkvetch
- Cobra lily
- Cobwebby Indian Paintbrush
- Cobwebby Thistle
- Cochise Adder's Mouth Orchid
- Cochise Beardtongue
- Cochlioda
- Cock's-comb Paintbrush
- Cockspur coral tree
- Coconino Ivesia
- Codonopsis
- Cody's Rock Cress
- Coiled Lousewort
- Coker's Gayfeather
- Cold-weather Eyebright
- Coleman's Coral Root
- Collared Annual Lupine
- Collinsia
- Collomia
- Cologania
- Colorado Beardtongue
- Colorado Desert Blue Star
- Colorado Desert Phacelia
- Colorado Hookless Cactus
- Colorado Larkspur
- Colorado Spiny Milkvetch
- Colorado Tansyaster
- Colorado Venus' Looking-glass
- Colton's Milkvetch
- Columbia Kittentails
- Columbia Milkvetch
- Columbian Larkspur
- Columbian Lewisia
- Columbian Monkshood
- Columbian Onion
- Columbian Rockcress
- Column Foxtail Cactus
- Columnea
- Comanche Peak Prairie Clover
- Comfrey
- Common blue violet
- Common Bluecup
- Common Deerweed
- Common Dittany
- Common Dwarf Flax
- Common figwort
- Common Fishhook Cactus
- Common Ginger
- Common heath
- Common hemp-nettle
- Common Lace Pod
- Common mallow
- Common milkweed
- Common milkwort
- Common Mock Pussypaws
- Common rhododendron
- Common Sandaster
- Common speedwell
- Common spotted orchid
- Common Townsend Daisy
- Common Turricula
- Common vetch
- Common Wallowa Paintbrush
- Compact Monkeyflower
- Compact Prairie Clover
- Compact White Sage
- Comparettia
- Cone-like Milkvetch
- Confederate rose
- Confederate Spiderwort
- Confederate Wakerobin
- Confusing Ladies'-tresses
- Congdon's Bitter-root
- Congdon's Lupine
- Congdon's Monkey-flower
- Congdon's Phacelia
- Conifer Broomrape
- Consocia Hybrid Violet
- Constance's Phacelia
- Constance's Springparsley
- Contorted Primrose
- Convolvulus
- Cooke's Kokio
- Cooke's Phacelia
- Cooktown orchid
- Cooley's Water-willow
- Cooper's Wild Cabbage
- Cooperrider's Hybrid Violet
- Copeland's Owl's Clover
- Copeland's Speedwell
- Copihue
- Copper iris
- Copper Mine Milkvetch
- Copperbush
- Coral bean
- Coral bells
- Coral drops
- Coral Gilia
- Coral Lily
- Coral pea
- Coral plant
- Coral tree
- Coral vine
- Coralbush
- Coralroot
- Cordelia Beardtongue
- Cordroot Beardtongue
- Coreopsis
- Corkscrew flower
- Corkwood
- Corkystem Passionflower
- Corn cockle
- Corn speedwell
- Cornish heath
- Corona de Cristo
- Correa
- Correll's False Dragonhead
- Corsican mint
- Cortusa
- Corydalis
- Corzo's Wild Petunia
- Costa Baja Phacelia
- Costus
- Cottam's Milkvetch
- Cotton's Milkvetch
- Cotton's Stickseed
- Cough Bush
- Coulter's Brickellbush
- Coulter's Globemallow
- Coulter's Jewel Flower
- Coulter's lupine
- Coulter's Lyrepod
- Coulter's Snapdragon
- Coulter's Stickpea
- Counterclockwise Fishhook Cactus
- Country Indian Paintbrush
- Cous Biscuitroot
- Cousin Hybrid Violet
- Coville Ceanothus
- Coville's Dwarf Sand Verbena
- Coville's Erigeron
- Coville's Gayophytum
- Coville's Indian Paintbrush
- Coville's Phacelia
- Coville's Purplemat
- Cow Poison
- Cow Spring Milkvetch
- Cow's clover
- Cowhorn Orchid
- Cowpea
- Cowslip
- Coyote mint
- Crandall's Beardtongue
- Cranesbill
- Craters of the Moon cushion buckwheat
- Cream Milkvetch
- Cream Sacs
- Creekside Wirelettuce
- Creeping Aster
- Creeping bellflower
- Creeping Bluestar
- Creeping Eryngo
- Creeping gloxinia
- Creeping Lespedeza
- Creeping Liriope
- Creeping Milkvetch
- Creeping Mitrewort
- Creeping Nicker
- Creeping phlox
- Creeping Sage
- Creeping Silene
- Creeping Snowberry
- Creeping speedwell
- Creeping thyme
- Crescent Milkvetch
- Crested Anoda
- Crested iris
- Crestrib Morning-glory
- Crevice Beardtongue
- Crider Beardtongue
- Crimson Bottlebrush
- Crimson clover
- Crimson flag lily
- Crimson Indian-paintbrush
- Crimson Monkeyflower
- Crimson pitcher plant
- Crimson Pygmy Orchid
- Crimson sage
- Crimson spider orchid
- Crimson-tipped Lousewort
- Crinkled Onion
- Crinklemat
- Crinum
- Crippled Cranefly
- Crisped Monardella
- Crisped Thelypody
- Croatian iris
- Crocosmia
- Cronquist's Milkvetch
- Cronquist's Phacelia
- Cronquist's Stickseed
- Crookedstem Aster
- Crookshank's Verbena
- Croomia
- Cropleaf Ceanothus
- Cross Gentian
- Cross Mountain Rock Cress
- Cross Sandpuffs
- Cross-leaved Milkwort
- Crossvine
- Crowded Lupine
- Crown flower
- Crown imperial
- Crown of thorns
- Crown vetch
- Crucifix Orchid
- Cryptantha Owl's Clover
- Cryptic Wintergreen
- Crystal Springs Lessingia
- Cuban oregano
- Cuckooflower
- Cucumberleaf Sunflower
- Cuesta Pass Checker
- Culberson County Skullcap
- Culver's root
- Cumberland azalea
- Cumberland Leatherflower
- Cumberland rosemary
- Cup and saucer vine
- Cupflower
- Cuphea
- Cupid's dart
- Cupleaf penstemon
- Cupped Fringe Pod
- Cupped Passion-flower
- Curlyheads
- Curlyleaf Monardella
- Curlytop Knotweed
- Currant Milkvetch
- Curtiss' Hoarypea
- Curtiss' Lespedeza
- Curtiss' Loosestrife
- Curtiss' Milkwort
- Curved Spine Prickly Pear
- Cushenbury Flowery Puncturebract
- Cushenbury Milkvetch
- Cushion Buckwheat
- Cushion Foxtail Cactus
- Cushion Milkvetch
- Cushion Phlox
- Cusick's Aster
- Cusick's Beardtongue
- Cusick's Biscuitroot
- Cusick's Bush-monkey-flower
- Cusick's Camas
- Cusick's Clover
- Cusick's Frasera
- Cusick's Giant Hyssop
- Cusick's Lupine
- Cusick's Milkvetch
- Cusick's Primrose
- Cusick's Rock Cress
- Cusick's Shooting Star
- Cusick's Speedwell
- Cusick's Stickseed
- Cusp Clover
- Custer Milkvetch
- Cut Leaf Checker Mallow
- Cut-leaf Kittentail
- Cut-leaf Thelypody
- Cuthbert's Skullcap
- Cuthbert's Turtlehead
- Cutleaf Toothwort
- Cutleaf Watermilfoil
- Cutler's Jewelflower
- Cutler's Milkvetch
- Cutler's Spurred Lupine
- Cuyamaca Bush
- Cuyamaca Rockcress
- Cyanea
- Cyanic Milkvetch
- Cylindric Blazing Star
- Cymbalaria
- Cypella
- Cypress vine
- Dahlia Hedgehog Cactus
- Dainty Desert Hideseed
- Dainty Gilia
- Daisy Desertstar
- Dalea
- Dalmatian bellflower
- Dalmatian iris
- Dampiera
- Dancing lady orchid
- Dane's Dwarf Gentian
- Danny's Skullcap
- Darin's Wild Buckwheat
- Dark Red Onion
- Dark-red helleborine
- Dark-starred Milkvine
- Darkthroat Shooting Star
- Darling pea
- Daubenya
- Davidson's Blue Eyed Mary
- Davidson's Buckwheat
- Davidson's Bush Mallow
- Davidson's Penstemon
- Davidson's Phacelia
- Davidson's Rock Cress
- Davidson's Sage
- Davis Horsenettle
- Davis' Stickseed
- Davis's Hybrid Violet
- Davy's Clarkia
- Day Valley Desertparsley
- Deam's Beardtongue
- Deam's Verbena
- Dean's Stephanomeria
- Death Valley Beardtongue
- Death Valley Blue Eyed Grass
- Death Valley Monkey-flower
- Death Valley Phacelia
- Death Valley Sandmat
- Deaver's Beardtongue
- Debris Milkvetch
- Deciduous Azalea
- Deckert's Pinweed
- Dedecker's Clover
- Deepwoods Horsebalm
- Deer Indian Paintbrush
- Deer Pea Vetch
- Deerbrush
- Deerhorn Clarkia
- Degener Beardtongue
- Degener's Argyrautia
- Degener's Cyanea
- Del Norte County Iris
- Del Norte Pea
- Delicate Gilia
- Delicate Hybrid Violet
- Delicate Ionopsis
- Delosperma
- Delta Eryngo
- Delta Tule Pea
- Denali Fleabane
- Dense Ayenia
- Dense blazing star
- Dense Boisduvalia
- Dense False Gilyflower
- Dense Flower Owl's Clover
- Dense Fruited Monkeyflower
- Dense Knotweed
- Dense Mountain Phlox
- Dentate False Pennyroyal
- Depauperate Milkvetch
- Depressed Lupine
- Depressed Whitlow-wort
- Deptford pink
- Derived Penstemon
- Derived Silverpuffs
- Descanso Milkvetch
- Deseret Milkvetch
- Desert Barrel Cactus
- Desert Beardtongue
- Desert Bird's Beak
- Desert Biscuitroot
- Desert bluebells
- Desert Calico
- Desert Candle
- Desert Ceanothus
- Desert Christmas Tree
- Desert Collinsia
- Desert Columbine
- Desert Figwort
- Desert five-spot
- Desert Frasera
- Desert Globemallow
- Desert Horse-purslane
- Desert Indigo Sage
- Desert Ironwood
- Desert Larkspur
- Desert lavender
- Desert Lupine
- Desert mariposa lily
- Desert paintbrush
- Desert Palafox
- Desert Pale Gilia
- Desert Rockcress
- Desert sand verbena
- Desert Savior
- Desert Snowberry
- Desert Spinystar
- Desert Springparsley
- Desert Thistle
- Desert Thorn-apple
- Desert Threadplant
- Desert Valley Fishhook Cactus
- Desert willow
- Desert Wirelettuce
- Desert Wishbone-bush
- Desert Wolfberry
- Desert Woollystar
- Desertbeauty
- Desertparsley
- Desolation Columbine
- Despain's Pincushion Cactus
- Deutzia
- Devil's backbone
- Devil's Bite
- Devil's claw
- Devil's hand tree
- Devil's Pincushion
- Devil's Smooth Claws
- Devil's tobacco
- Devil's-bit scabious
- Devil's-claw Barrel Cactus
- Devils Gate Bladderpod
- Devilthorn
- Dew Flower
- Diablo Onion
- Diamond Clarkia
- Diamondflowers
- Diascia
- Dicliptera
- Diehl's Milkvetch
- Diffuse Collomia
- Diffuse Spiderwort
- Dillenius' Ticktrefoil
- Dillon's Vanilla
- Dinosaur Milkvetch
- Disa
- Disanthus
- Dissected Penstemon
- Distant Phacelia
- Distylium
- Dittany of Crete
- Divaricate Navarretia
- Divaricate Phacelia
- Divide Bladderpod
- Divided Rock Cress
- Dixie Iris
- Dixie Mountain Breadroot
- Dixie Sandmat
- Dixie Ticktrefoil
- Dixon's Paintbrush
- Dog violet
- Dog's-mouth
- Dog's-tooth violet
- Doll's Head
- Dolores Campion
- Dolores River Skeletonplant
- Domin's Club
- Donner Lake Lupine
- Dorr's Cabin Jewel Flower
- Dorset heath
- Dotted blazing star
- Dotted Onion
- Double Honeysuckle
- Doublehorn Calicoflower
- Doublet
- Doubting Mariposa Lily
- Douglas Aster
- Douglas iris
- Douglas' Clover
- Douglas' Grasswidow
- Douglas' Knotweed
- Douglas' Mesamint
- Douglas' Monardella
- Douglas' Onion
- Douglas' Phacelia
- Douglas' Silver Lupine
- Douglas' Spineflower
- Douglas' Thistle
- Downingia
- Downy Chinese-houses
- Downy Clematis
- Downy Desert-thorn
- Downy gentian
- Downy lobelia
- Downy Pagoda-plant
- Downy phlox
- Downy Pincushionplant
- Downy Prairie Clover
- Downy skullcap
- Dozing Phacelia
- Drab Phacelia
- Dracula orchid
- Dragon arum
- Dragon Milkvetch
- Dragon's mouth
- Dragonhead
- Dragonmouth
- Drew's Silky Lupine
- Droopflower Clover
- Drooping Milkvetch
- Dropseed Rock Cress
- Drosanthemum
- Drummond's Anemone
- Drummond's Aster
- Drummond's Bluebells
- Drummond's Campion
- Drummond's False Pennyroyal
- Drummond's Leaf-flower
- Drummond's Milkvetch
- Drummond's Ruellia
- Drummond's Skullcap
- Drummond's Wood-sorrel
- Drumstick allium
- Drumstick primula
- Drushel's Wild Petunia
- Dry-sand Pinweed
- Drymaria Dwarf-flax
- Drypark Pea
- Drywoods Miterwort
- Duane's Milkvetch
- Duchesne Beardtongue
- Duchesne Milkvetch
- Duchesne Rock Cress
- Dudley's Lousewort
- Dudley's Phacelia
- Dudley's Triplet Lily
- Dudleya
- Dugway Buckwheat
- Duncecap Larkspur
- Dune Unicorn Plant
- Dunn's Lobelia
- Duran's Alumroot
- Duranta
- Dusky coral pea
- Dusky cranesbill
- Dusky Onion
- Dutch crocus
- Dutchman's pipe
- Dwarf Alpine Indian Paintbrush
- Dwarf Ayenia
- Dwarf Blue-eyed-grass
- Dwarf Brodiaea
- Dwarf Calicoflower
- Dwarf Ceanothus
- Dwarf Checkerbloom
- Dwarf Cholla
- Dwarf Clover
- Dwarf Desert Honeysuckle
- Dwarf Desertpeony
- Dwarf False Fameflower
- Dwarf False Indigo
- Dwarf False Owl-clover
- Dwarf False Pennyroyal
- Dwarf Fireweed
- Dwarf Fleabane
- Dwarf Four O'Clock
- Dwarf Groundsmoke
- Dwarf Indian Mallow
- Dwarf Indigo Bush
- Dwarf Ipomopsis
- Dwarf iris
- Dwarf lake iris
- Dwarf larkspur
- Dwarf Lessingia
- Dwarf Lupine
- Dwarf Marsh Violet
- Dwarf Milkvetch
- Dwarf Milkweed
- Dwarf milkwort
- Dwarf Mountain Lupine
- Dwarf Pale Paintbrush
- Dwarf Pawpaw
- Dwarf Penstemon
- Dwarf Prairie Clover
- Dwarf Purple Monkeyflower
- Dwarf Raspberry
- Dwarf Rockcress
- Dwarf Sand Verbena
- Dwarf Skullcap
- Dwarf Snapdragon
- Dwarf Thistle
- Dwarf Vervain
- Dwarf Violet Iris
- Dwarf Wakerobin
- Dwarf White Milkvetch
- Dwarf-flowered heartleaf
- Dyebush
- Dysosma
- Eames's Hybrid Violet
- Eared Dwarf Gentian
- Eared Hedge-mustard
- Eared Redstem
- Eared Rockcress
- Eared Roscoea
- Earleaf Brickellbush
- Earleaf False Foxglove
- Early Azalea
- Early Blue Hybrid Violet
- Early Bluetop Fleabane
- Early dog-violet
- Early gentian
- Early Horse Gentian
- Early marsh-orchid
- Early Onion
- Early purple orchid
- Early spider-orchid
- Early-flowering borage
- Earthnut Pea
- East Bay Clarkia
- Easter cactus
- Easter daisy
- Eastern Beebalm
- Eastern Blue-eyed Grass
- Eastern Bluestar
- Eastern False Dragonhead
- Eastern Gray Penstemon
- Eastern Milkpea
- Eastern Pasqueflower
- Eastern Purple Bladderwort
- Eastern Redbud
- Eastern Sampson's Snakeroot
- Eastern Sensitive Plant
- Eastern Silver Aster
- Eastern Smooth Penstemon
- Eastern Swamp Saxifrage
- Eastern Trailing Ticktrefoil
- Eastern Wahoo
- Eastwood's Baby Blue Eyes
- Eastwood's Bellflower
- Eastwood's Bluebells
- Eastwood's Larkspur
- Eastwood's Milkvetch
- Eastwood's Monkeyflower
- Eaton's Fleabane
- Eaton's Thistle
- Echeveria
- Echinopsis
- Echium
- Eclipse Hybrid Violet
- Edible Milkpea
- Edible Thistle
- Edwards Plateau Hoarypea
- Edwards Plateau Milkvetch
- Edwards Plateau Spiderwort
- Edwards Plateau Thimbleweed
- Edwards' Prickly Pear
- Egg Lake Monkey-flower
- Egg Milkvetch
- Eggleaf Monkeyflower
- Eggleaf Penstemon
- Egret Mudplantain
- Ehu
- Eisen's Phacelia
- Eke Silversword
- El Paso Gilia
- El Paso Pricklypear
- El Paso Skyrocket
- Eldorado Larkspur
- Electric Peak Larkspur
- Eleele Cyanea
- Elegant Aster
- Elegant Brodiaea
- Elegant Buckwheat
- Elegant clarkia
- Elegant Downingia
- Elegant Indian Paintbrush
- Elegant Jacob's-ladder
- Elegant Lupine
- Elegant Mariposa Lily
- Elegant Milkvetch
- Elegant Penstemon
- Elegant Pussy-Toes
- Elegant Rock Cress
- Elephant garlic
- Elephant's Foot
- Elephant's head
- Elizabeth's Blue-eyed Grass
- Elizabeth's Milkvetch
- Elko Indian Paintbrush
- Elko Rock Cress
- Elliott's Gentian
- Ellipticleaf Cyanea
- Ellipticleaf Papala
- Elmer's Clover
- Elmer's Fleabane
- Elmer's Paintbrush
- Elmer's Snapdragon
- Elusive Jacob's-ladder
- Emory Globe Mallow
- Emory's Barrel Cactus
- Emory's Milkvetch
- Emu bush
- Encyclia
- Endive
- Engelmann's Fleabane
- Engelmann's Hedgehog Cactus
- Engelmann's Knotweed
- Engelmann's Milkvetch
- Engelmann's Milkweed
- Engelmann's Sage
- Engelmann's Thistle
- English bluebell
- English iris
- Enkianthus
- Enquist Brazos-mint
- Entireleaved Thelypody
- Epidendrum
- Epimedium
- Epling's Hedgenettle
- Erect Bouchetia
- Erect Milkpea
- Erect Primrose
- Erect Tropical Daisy
- Ernest's Spiderwort
- Ertter's Woollystar
- Erwin's Red Turtlehead
- Escalante Milkvetch
- Escallonia
- Escarpment Milkvetch
- Esmeralda Buckwheat
- Etoniah Rosemary
- Eula's Aster
- Eureka Milkvetch
- European Corn-Salad
- European Stickseed
- Evalyn's Jewelflower
- Eve's Needle
- Everglade Key Sandmat
- Evergreen Currant
- Evergreen Kittentail
- Everlasting pea
- Evermann's Lupine
- Ewan's Larkspur
- Explorer's Bush
- Explorer's gentian
- Eyebright
- Eyed Gilia
- Fairbanks Annual Indian Paintbrush
- Fairfield Milkvetch
- Fairy duster
- Fairy foxglove
- Fairy lantern
- Fairy Mist
- Fairy primrose
- Fairy Slipper
- Fairy thimbles
- Fall Tansyaster
- Fallflowering Pleatleaf
- False Babystars
- False Boneset
- False Candytuft
- False Dayflower
- False Hydrangea
- False Pennyroyal
- False Pimpernel
- False Poinciana
- False Rosemary
- False Sinningia
- False Snowparsley
- Falseteeth Skullcap
- Fameflower
- Fan Columbine
- Fancy Nightshade
- Fanleaf Crinklemat
- Fanleaf Fleabane
- Fanleaf Vervain
- Fanleaf Violet
- Faqqua iris
- Farewell-to-spring
- Farfurrias Milkvine
- Farwell's Watermilfoil
- Faurie's Club
- Faurie's Cyanea
- Feather-leaf Kittentail
- Featherleaf Desertpeony
- Featherleaf Fleabane
- Featherplume
- Featherweed
- Feijoa
- Feltleaf Ceanothus
- Felwort
- Fen violet
- Fendler's Aster
- Fendler's Globemallow
- Fendler's Horsenettle
- Fendler's Meadow Rue
- Fendler's Penstemon
- Fendler's Rock Cress
- Fendler's Sandmat
- Fendler's Waterleaf
- Fernald's Milkvetch
- Fernald's Northern Rock Cress
- Fernald's Ticktrefoil
- Fernery Hybrid Violet
- Fernleaf Biscuitroot
- Fernleaf lavender
- Fernleaf Peony
- Fernleaf Phacelia
- Fernleaved Pedicularis
- Ferraria
- Ferris' Milkvetch
- Ferron's Milkvetch
- Feverwort
- Few Flowered Collinsia
- Few Flowered Meadow Rue
- Few-Flowered Aster
- Few-flowered Bleeding Heart
- Few-flowered Corydalis
- Fewflower Blazing-star
- Fewflower Clover
- Fewflower Milkweed
- Fewflower Navarretia
- Fewflower Pea
- Fewleaf Thistle
- Field cow-wheat
- Field Forget-me-not
- Field gentian
- Field gladiolus
- Field Locoweed
- Field madder
- Field Milkvetch
- Field pansy
- Field Scabious
- Field thistle
- Field woundwort
- Fiesta flower
- Figwort
- Fine-leaf Hairy-foxglove
- Fine-tooth Beardtongue
- Fineflower Gilia
- Finger False Dragonhead
- Finzel's Wild Ginger
- Fir-leaf Beardtongue
- Fire orchid
- Fire pink
- Fire poppy
- Firecracker flower
- Firecracker penstemon
- Firecracker plant
- Firespike
- Firewheel tree
- Fischer's Orchid
- Fish Creek Fleabane
- Fish Slough Milkvetch
- Fish's Milkwort
- Fisher Milkvetch
- Fitch's Hedgehog Cactus
- Fivewing Spiderling
- Flagstaff Beardtongue
- Flagstaff Rock Cress
- Flame acanthus
- Flame azalea
- Flame nasturtium
- Flame of the forest
- Flame of the woods
- Flame pea
- Flame Ragwort
- Flame violet
- Flaming Sword
- Flaming Trumpet
- Flat-top Broomrape
- Flat-Top Whiteweed
- Flatface Calicoflower
- Flathead Larkspur
- Flatspine Stickseed
- Flax lily
- Flaxflowered Ipomopsis
- Flaxleaf Monardella
- Flaxleaf Whitetop Aster
- Fleabane
- Fleshy Beardtongue
- Fleshy Dandelion
- Fleshy Lupine
- Fleshy Porterella
- Flexible Ceanothus
- Flexile Milkvetch
- Flint Mountain Milkvetch
- Flodman's Thistle
- Flor de maga
- Flor de pasmo
- Florida Anisetree
- Florida azalea
- Florida Balm
- Florida Bellflower
- Florida Blazing Star
- Florida Calamint
- Florida Crossopetalum
- Florida Dancing-lady Orchid
- Florida False Foxglove
- Florida Hammock Milkpea
- Florida Hoarypea
- Florida Ironweed
- Florida Keys Sage
- Florida Lady's Nightcap
- Florida Lobelia
- Florida Loosestrife
- Florida Milkpea
- Florida Milkvetch
- Florida Milkvine
- Florida Mountainmint
- Florida Paintbrush
- Florida Pennyroyal
- Florida Phlox
- Florida Prairie-clover
- Florida Purple Bladderwort
- Florida Pygmypipes
- Florida Scrub Bluecurls
- Florida Scrub Skullcap
- Florida Skullcap
- Florida Ticktrefoil
- Florida Vetch
- Florida Water Aster
- Florida Waxweed
- Floss Silk Tree
- Flowering currant
- Flowering dogwood
- Flowering Tobacco
- Flowery Phlox
- Fluxweed
- Fly orchid
- Flyr's Brickellbush
- Fogfruit
- Foldear Lobelia
- Folded Calicoflower
- Foothill Beardtongue
- Foothill Clover
- Foothill Daisy
- Foothill Fleabane
- Foothill Larkspur
- Foothill Milkvetch
- Forest Bell Bush
- Forest Clermontia
- Forest Half-flower
- Forest Sandalwood
- Forest Starviolet
- Forest Stenogyne
- Forest Stephanomeria
- Forked Aster
- Forked Bluecurls
- Formosa Pitcherplant
- Fort Bowie Prairie Clover
- Fort Huachuca Verbena
- Fort Miller Clarkia
- Fort Wingate Milkvetch
- Fosberg's Starviolet
- Foul Odor Monkeyflower
- Fountain Thistle
- Four-petal Pawpaw
- Fourleaf Milkweed
- Fourleaf Vetch
- Fourpart Dwarf Gentian
- Fourvalve Mimosa
- Fourwing Milkvetch
- Foxtail orchid
- Foxtail Prairie Clover
- Fragile Onion
- Fragrant Button Sage
- Fragrant Eryngo
- Fragrant orchid
- Franciscan Bluebells
- Franciscan Erigeron
- Franciscan Thistle
- Frank-Smith's Violet
- Franklin's Phacelia
- Fraser's Marsh St. Johnswort
- Frasera
- Fraternal Indian Paintbrush
- Freckled Milkvetch
- Freed's Jewel Flower
- Freeman Maple
- Fremont Cottonwood
- Fremont County Rock Cress
- Fremont's Beardtongue
- Fremont's Combleaf
- Fremont's Dalea
- Fremont's Desert-thorn
- Fremont's Geranium
- Fremont's Leather-flower
- Fremont's Monkeyflower
- Fremont's Phacelia
- French Broad Heartleaf
- French honeysuckle
- French Marigold
- French-grass
- French's Shootingstar
- Fresno Ceanothus
- Fresno County Bird's Beak
- Frigid Shootingstar
- Fringe lily
- Fringe Pod
- Fringed bleeding heart
- Fringed Bluestar
- Fringed Checker Mallow
- Fringed gentian
- Fringed hibiscus
- Fringed Kittentail
- Fringed lavender
- Fringed Linanthus
- Fringed Meadow Beauty
- Fringed Onion
- Fringed Orchid
- Fringed Phacelia
- Fringed Pink
- Fringed Poppy Mallow
- Fringed Spineflower
- Fringed Twinevine
- Fringed Willowherb
- Fringeleaf Lobelia
- Fringeleaf Necklacepod
- Frisco Clover
- Fritillary
- Front Range Penstemon
- Frosted Buckwheat
- Frosted Indian Paintbrush
- Frosted Mint
- Fruit Rockcress
- Fuchsia-flowered gooseberry
- Full Moon Maple
- Fumewort
- Funeral Mountain Milkvetch
- Furnace Creek Wash Wild Buckwheat
- Furniss's Phacelia
- Furrowed Wakerobin
- Fuzzy Phacelia
- Fuzzy-tongue Penstemon
- Fuzzy-wuzzy Airplant
- Fuzzyflower Stenogyne
- Fuzzyleaf Clover
- Gaga-imo
- Gairdner's Beardtongue
- Gambel's Dwarf Milkvetch
- Gander's Buckhorn Cholla
- Garber's Gayfeather
- Garberia
- Garden Balsam
- Garden phlox
- Garfield Lupine
- Garlic
- Garlic vine
- Garrett's Beardtongue
- Garrett's Firechalice
- Garrett's Fleabane
- Garrett's Florida Pineland Spurge
- Gas plant
- Gattinger's Lobelia
- Gattinger's prairie clover
- Gaura
- Gaywings
- Gazania
- Gearstem Cactus
- Geiger tree
- Gentian sage
- Gentner's Fritillary
- Gentry's Indigobush
- Georgia Aster
- Georgia Blazing-star
- Georgia Calamint
- Georgia False Indigo
- Georgia Ironweed
- Georgia Skullcap
- Georgia Sweet Pitcherplant
- Geraldton wax
- Geraniumleaf Phacelia
- German garlic
- German primrose
- Germander
- Germander Penstemon
- Germander speedwell
- Geum
- Geyer's Bladderpod
- Geyer's Larkspur
- Geyer's Milkvetch
- Geyer's Sandmat
- Giant Airplant
- Giant bellflower
- Giant Blue Cohosh
- Giant Blue Eyed Mary
- Giant Blue Iris
- Giant Cowbane
- Giant Four O'Clock
- Giant Kokee Cyanea
- Giant Mountain Aster
- Giant onion
- Giant Orchid
- Giant Purple Wakerobin
- Giant Red Indian Paintbrush
- Giant Spanish Needle
- Giant Spiderwort
- Giant Vetch
- Giant Wakerobin
- Giant white bird of paradise
- Giant Woollystar
- Gibbens' Beardtongue
- Gibraltar campion
- Gibraltar candytuft
- Gibson's Cyanea
- Gila Milkvetch
- Gila Thistle
- Gilia
- Gilman's Buckwheat
- Gilman's Milkvetch
- Gilman's Springparsley
- Gilpin's Pitcherplant
- Gina's Phacelia
- Ginger lily
- Gingerleaf Cyanea
- Glacier Buttercup
- Glacier Eyebright
- Glade Coneflower
- Glade Cress
- Glade Lobelia
- Glade Savory
- Glade Violet
- Gland Onion
- Glandleaf Milkwort
- Glandleaf Prairie Clover
- Glandular Blazing Star
- Glandular Clarkia
- Glandular False Calico
- Glandular Milkwort
- Glandular Phacelia
- Glandular Threadplant
- Glandular Willowherb
- Glass Mountain Crested Coralroot
- Glaucous Beardtongue
- Glaucous Honeysuckle
- Glaucous Rattlesnakeroot
- Glaucous Weaselsnout
- Glaucous willowherb
- Glenwood Milkvetch
- Glenwood Springs Rockcress
- Globe amaranth
- Globe daisy
- Globe Penstemon
- Globe Springparsley
- Globemallow
- Glory Bower
- Glory Flower
- Glory of Texas
- Glory of the sun
- Glory pea
- Glory tree
- Glory-of-the-snow
- Gloxinia
- Goat's rue
- Goatbush
- Godfrey's Blazing Star
- Godfrey's False Dragonhead
- Golden Prickly Pear
- Golden-tongue Beardtongue
- Goniolimon
- Goodding's Fameflower
- Goodding's Phacelia
- Goodrich Eared Rockcress
- Goodrich's Beardtongue
- Goose Creek Milkvetch
- Gooseberryleaf Globemallow
- Goosefoot Moonpod
- Gorman's Lupine
- Gorman's Penstemon
- Graceful Clarkia
- Graham Beardtongue
- Graham's columbine
- Graham's Thistle
- Graham's Ticktrefoil
- Grand Canyon Campion
- Grand Canyon Cliff Milkvetch
- Grand Fringed Gentian
- Grand Junction Milkvetch
- Grand Redstem
- Granite Hedge-hyssop
- Grant's Splendid Woodland-gilia
- Grants Pass Lupine
- Grants Pass Willowherb
- Grape Clematis
- Grape Soda Lupine
- Grass Milkvetch
- Grass pea
- Grass pink
- Grass vetchling
- Grassland Pricklypear
- Grassleaf Barbara's Buttons
- Grassleaf Coneflower
- Grassleaf Lettuce
- Grassleaf Pea
- Grassleaf Ticktrefoil
- Grassy bells
- Gravel Milkvetch
- Gray Aster
- Gray Globemallow
- Gray Hybrid Violet
- Gray Monardella
- Gray Vervain
- Gray's Aster
- Gray's Bean
- Gray's Broomrape
- Gray's Catchfly
- Gray's Fritillary
- Gray's lily
- Gray's Milkpea
- Gray's Townsend Daisy
- Graygreen Thistle
- Grayleaf Phlox
- Grayleaf Skullcap
- Great Basin Calicoflower
- Great Basin Eagle-claw Cactus
- Great Basin Langloisia
- Great Basin Lupine
- Great Basin Milkwort
- Great Basin Tumble-mustard
- Great Basin Woollystar
- Great Bladdery Milkvetch
- Great blue lobelia
- Great burnet
- Great Ironweed
- Great Lakes Gentian
- Great Lakes Jacob's Ladder
- Great Lakes Violet
- Great Plains Bladderpod
- Great Plains Gayfeather
- Great Plains Stickseed
- Great Sage
- Great Valley Eryngo
- Great Valley Phacelia
- Great Waterleaf
- Great willowherb
- Greata's Aster
- Greater Baby-innocence
- Greater burdock
- Greater knapweed
- Greater Periwinkle
- Greater Purple Fringed Orchid
- Greater Yellow Lady's Slipper
- Greater Yellowthroat Gilia
- Grecian windflower
- Green alkanet
- Green False Foxglove
- Green ixia
- Green Jewel-flower
- Green Milkweed
- Green Monardella
- Green Phlox
- Green Prairie Coneflower
- Green River Milkvetch
- Green Slender Lupine
- Green-winged orchid
- Green's Milkweed
- Greene's Blue Eyed Mary
- Greene's Brickellbush
- Greene's Four O'Clock
- Greene's Larkspur
- Greene's Mariposa Lily
- Greene's Milkvetch
- Greene's Starviolet
- Greenhorn Fritillary
- Greenland Northern Rock Cress
- Greenland Primrose
- Greenman's Biscuitroot
- Greenman's Bluet
- Greenstipule Lupine
- Greenthread
- Gregg Dalea
- Gregg's Keelpod
- Gregg's mistflower
- Grevillea
- Griffin's Beardtongue
- Grimes' Pea
- Grinnell's Beardtongue
- Grizzlybear Pricklypear
- Groovestem Bouchea
- Ground Gooseberry
- Ground Nama
- Ground plum
- Ground-crescent Milkvetch
- Groundcover Milkvetch
- Groundnut
- Grouse Creek Rock Cress
- Grouse Whortleberry
- Guadalupe Island Lupine
- Guadalupe Milkwort
- Guadalupe Mountain Necklacepod
- Guar
- Guaria morada
- Gulf Coast Lupine
- Gulf Coast Searocket
- Gulf Graytwig
- Gulf Indian Breadroot
- Gulf Sandmat
- Gulf Searocket
- Gulf Skullcap
- Gulf Vervain
- Gumbo Milkvetch
- Gummy Gooseberry
- Gunnison County Rock Cress
- Gunnison Milkvetch
- Gunnison's Mariposa Lily
- Gunnison's Rock Cress
- Gunsight Clarkia
- Guzmania
- Gymea lily
- Gymnaster
- Gymnocalycium
- Gypsum Cactus
- Gypsum Diamond-flowers
- Gypsum Milkvetch
- Gypsum Phacelia
- Gypsum Tansy-aster
- Haberlea
- Hackberry Penstemon
- Haha'Aiakamanu
- Hairless Fleabane
- Hairspine Pricklypear
- Hairy alpenrose
- Hairy Ayenia
- Hairy beardtongue
- Hairy Bedstraw
- Hairy Bigleaf Lupine
- Hairy Bird's Beak
- Hairy Butterwort
- Hairy Checker Mallow
- Hairy Clematis
- Hairy Clustervine
- Hairy Cyanea
- Hairy Flowered Buckwheat
- Hairy Fournwort
- Hairy Hedgenettle
- Hairy Honeysuckle
- Hairy Indian Paintbrush
- Hairy Lespedeza
- Hairy Lettuce
- Hairy Milkweed
- Hairy Mountainlaurel
- Hairy Phlox
- Hairy Pinweed
- Hairy Prairie Clover
- Hairy Schiedea
- Hairy Skullcap
- Hairy Small-leaf Ticktrefoil
- Hairy Stonecrop
- Hairy Tube-tongue
- Hairy vetch
- Hairy violet
- Hairy White Oldfield Aster
- Hairy Woodmint
- Hairy Yerba Santa
- Hairy-fruit Spurge
- Hairy-pod Milkvetch
- Hairy-stemmed Willowherb
- Hairy-tuft Four O'Clock
- Hairyflower Bellflower
- Hairyflower Spiderwort
- Hairystem Gooseberry
- Hairystem Rock Cress
- Hairystem Spiderwort
- Haleakala Clermontia
- Haleakala Cyanea
- Haleakala Iliahi
- Haleakala Lobelia
- Haleakala Tetramolopium
- Halfmoon Milkvetch
- Hall's Bush Lupine
- Hall's California Tea
- Hall's Fleabane
- Hall's Milkvetch
- Hall's Monardella
- Hall's Monkeyflower
- Hall's Penstemon
- Hall's Shrubby-spurge
- Haller's pasque flower
- Hammer's Spurge
- Hammitt's Clay Cress
- Hana Clermontia
- Hana Forest Silversword
- Handsome Beardtongue
- Handsome Phacelia
- Handsome-harry
- Hansen's Clover
- Harbour's Penstemon
- Hardenbergia
- Hardy fuchsia
- Hardy gloxinia
- Hardy Primrose
- Haresfoot Locoweed
- Harkness' Flaxflower
- Harlequin Bush-monkey-flower
- Harlequin Calicoflower
- Harlequin flower
- Harlequin Phacelia
- Harlequin Spiralseed
- Harlequinbush
- Harold's Milkvetch
- Harper's False Foxglove
- Harper's Heartleaf
- Harper's Sea Rocket
- Harrington Beardtongue
- Harrison's Milkvetch
- Harrison's Stickseed
- Harsh Cyanea
- Harsh Indian Paintbrush
- Hartweg's Checkerbloom
- Hartweg's Fleabane
- Hartweg's Twinevine
- Hartweg's Wild Ginger
- Harvest brodiaea
- Harwood's Milkvetch
- Hasse's Vetch
- Hau Kuahiwi
- Haupu Range Yellow Loosestrife
- Havana Clustervine
- Havana Skullcap
- Havard Penstemon
- Havard's Fiddleleaf
- Havard's Ipomopsis
- Havard's stonecrop
- Hawai'i Jadevine
- Hawai'i Vetch
- Hawaii 'Ohe
- Hawaii Bog Violet
- Hawaii Horsenettle
- Hawaii Phyllostegia
- Hawaii Red Crane's-bill
- Hawaii Violet
- Hawaiian Catchfly
- Hawaiian Lily
- Hawaiian Red Hibiscus
- Hawkweed Buckwheat
- Hawkweed-leaved Saxifrage
- Hayden's Aster
- Hayden's Indian Paintbrush
- Hearst Ranch Buckbrush
- Heart-leaf Hybrid Violet
- Heartleaf Iceplant
- Heartleaf Keckiella
- Heartleaf Milkweed
- Heartleaf Morning-glory
- Heartleaf Rosemallow
- Heartleaf Skullcap
- Heartleaf Thorn-mint
- Heartleaf Twayblade
- Heartleaf Twistflower
- Heated Phacelia
- Heath Aster
- Heath dog-violet
- Heath lobelia
- Heath milkwort
- Heath spotted orchid
- Heath Wrightwort
- Hebe
- Hebridean spotted-orchid
- Heckard's Paintbrush
- Heckner's Lewisia
- Hedge nettle
- Hedge woundwort
- Hedgehog broom
- Hedgehog cactus
- Hedgehyssop
- Hedgerow cranesbill
- Heermann's Bird's-foot Trefoil
- Heermann's Buckwheat
- Heilala
- Heimburger's Anemone
- Helenium
- Heliconia
- Heliograph Peak Fleabane
- Heliophila
- Heliotrope
- Helleborine
- Heller's Bird's Beak
- Heller's Blazing Star
- Helmet Orchid
- Hemp Agrimony
- Hemp-nettle
- Henbane
- Henbit
- Henderson's Aster
- Henderson's Checkerbloom
- Henderson's Currant
- Henderson's Fawn-lily
- Henry Indian Paintbrush
- Hens and chicks
- Hentz's Phlox
- Hepatica
- Herbaceous Penstemon
- Herbertia
- Hermit Milkvetch
- Hernandez's Bluecurls
- Hernandez's Spineflower
- Hervey's Aster
- Hess' Fleabane
- Hester's Foxtail Cactus
- Hetch Hetchy Monkeyflower
- Hevron's Milkvetch
- Hickman's Checker Mallow
- Hidden ginger
- Hidden Phacelia
- Hidden-petaled Ilima
- Hiddenflower Phacelia
- Hierba Del Sapo
- Higgins' Beardtongue
- Higgins' Milkvetch
- Higgins's Phacelia
- High Mallow
- High Mountain Larkspur
- Hildegardia
- Hill Country Penstemon
- Hill's Lupine
- Hill's Thistle
- Hillebrand's Loosestrife
- Hillside Clermontia
- Hillside Collinsia
- Hillside False Bindweed
- Hillside Vervain
- Himalayan balsam
- Himalayan honeysuckle
- Himalayan mint shrub
- Himalayan monkshood
- Hinahina Kahakai
- Hinckley's Polemonium
- Hinds' Nightshade
- Hispid Rose
- Hitchcock's Blue Eyed Grass
- Hoary aster
- Hoary Beaked Orchid
- Hoary Blackfoot
- Hoary Fleabane
- Hoary Milkpea
- Hoary mountain mint
- Hoary Pea
- Hoary Phacelia
- Hoary Pincushionplant
- Hoary vervain
- Hoarypea
- Hoffman's Gilia
- Hoffmann's Buckwheat
- Hoffmann's Nightshade
- Hoffmann's Rock Cress
- Hohokam Agave
- Holboell's Rockcress
- Hole In The Sand Plant
- Hollick's Hybrid Violet
- Hollowleaf Annual Lupine
- Hollyleaf Ceanothus
- Hollyleaf Clover
- Hollyleaf Gilia
- Hollyleaf Pincushionplant
- Holmgren's Lupine
- Holo Lupine
- Holy Dandelion
- Holywood
- Holzinger's Venus' Looking-glass
- Honesty
- Honey bush
- Honey myrtle
- Honeyscented Pincushionplant
- Honeysuckle fuchsia
- Honeywort
- Hong Kong orchid tree
- Honohono
- Honolulu Cyanea
- Hooded Arrowhead
- Hooked Pincushionplant
- Hooked-spur Violet
- Hooker's Eryngo
- Hooker's Fleabane
- Hooker's Milkwort
- Hooker's Silene
- Hoopvine
- Hoosier Pass Ipomopsis
- Hoover's Biscuitroot
- Hoover's Brodiaea
- Hoover's Calicoflower
- Hoover's Desertparsley
- Hoover's Wirelettuce
- Hopi Milkvetch
- Horizontal Woody Rock Cress
- Horn-of-plenty
- Horn's Milkvetch
- Horned poppy
- Horned rampion
- Horned violet
- Hornemann's Willowherb
- Horrid Herrickia
- Horrid Thistle
- Horse Crippler
- Horse nettle
- Hoskett Meadows Lupine
- Hot Rock Beardtongue
- Hot Springs Globe-mallow
- Hottentot fig
- Hound's tongue
- House Range Primrose
- House's Hybrid Violet
- House's Mock Sandwort
- Houston Meadow-rue
- Hovea
- Howard's Alpine Forget-me-not
- Howe's Hedgehog Cactus
- Howell Lousewort
- Howell's Biscuitroot
- Howell's Broom Rape
- Howell's Buckwheat
- Howell's Camas
- Howell's Jewel Flower
- Howell's Lupine
- Howell's Mock Sandwort
- Howell's Onion
- Howell's Pioneer Rockcress
- Howell's Pussytoes
- Howell's Thelypody
- Howell's Violet
- Hoya
- Huachuca Mountain Eryngo
- Huachuca Mountain Geranium
- Huachuca Mountain Indian Paintbrush
- Huachuca Mountain Lupine
- Huachuca Mountain Milkvetch
- Huachuca Mountain Morning-glory
- Huachuca Mountain Stonecrop
- Huahekili Uka
- Hubricht's Bluestar
- Huddelson's Locoweed
- Hudson Bay Eyebright
- Huernia
- Hughes's Phacelia
- Hulten's Fleabane
- Humboldt Bay Owl's-clover
- Humboldt River Milkvetch
- Humboldt's Lily
- Hummingbird plant
- Hummingbird sage
- Hummingbird tree
- Hungarian lilac
- Hupa Gooseberry
- Hutchinson's Delphinium
- Hyacinth bean
- Hyacinth orchid
- Hybrid Blazing Star
- Hybrid Cardinal Flower
- Hybrid Ladyslipper
- Hybrid Meadowbeauty
- Hybrid Pitcher Plant
- Hybrid Sundew
- Hybrid Vervain
- Hyssop
- Hyssop skullcap
- Hyssopleaf Hedgenettle
- Hyssopleaf Sandmat
- Ibapah Tickweed
- Ice plant
- Iceland poppy
- Idaho Beardtongue
- Idaho Bellflower
- Idaho Blue-eyed Grass
- Idaho Bluebells
- Idaho Dwarf Primrose
- Idaho Fleabane
- Idaho Frasera
- Idaho Phacelia
- Idaho Springbeauty
- Idaho Trillium
- Ill-scented Wakerobin
- Illinois Horse-gentian
- Illinois Pinweed
- Illinois Ticktrefoil
- Imbricate Phacelia
- Immortelle
- Impala lily
- Imperfect Buckwheat
- Impoverished Pinweed
- Inchhigh Lupine
- Indian Canyon Fleabane
- Indian coral tree
- Indian Headdress
- Indian Knob Mountainbalm
- Indian Milkvetch
- Indian pink
- Indian rhododendron
- Indian tobacco
- Indian Valley Brodiaea
- Indian Valley Spinycape
- Indian Warrior
- Indian-turnip
- Indianroot
- Indonesian wax ginger
- Inflated Beardtongue
- Inflated Grasswidow
- Inland Gilia
- Interior Bush Lupine
- Interior Phacelia
- Interior Seapink
- Intermediate Fishhook Cactus
- Intermediate Larkspur
- Intermediate Pinweed
- Intermediate Yucca
- Intermountain Clover
- Intermountain Indian Breadroot
- Intermountain Lupine
- Intermountain Phacelia
- Inuit Wallflower
- Inverness Ceanothus
- Inyo Beardtongue
- Inyo County Star Tulip
- Inyo Frasera
- Inyo Hulsea
- Inyo Lupine
- Inyo Meadow Lupine
- Inyo Milkvetch
- Inyo Rock Cress
- Iochroma
- Iowa Thistle
- Ipomopsis
- Iron Ipomopsis
- Island Bristleweed
- Island Buckwheat
- Island Bush Monkeyflower
- Island bush snapdragon
- Island Button-saxifrage
- Island Hazardia
- Island mallow
- Island Pitchersage
- Island Sand Verbena
- Island Schiedea
- Island Shootingstar
- Italian aster
- Italian bellflower
- Italian clematis
- Italian Plumeless-Thistle
- Ithuriel's spear
- Ives' Phacelia
- Ivy-leaved bellflower
- Ivy-leaved speedwell
- Ivy-leaved toadflax
- Ivyleaf Geranium
- Ivyleaf morning glory
- Ivyleaf Thoroughwort
- Ixia
- Ixora
- Jack bean
- Jack-in-the-pulpit
- Jackson Hole Thistle
- Jade vine
- Jaeger's Beardtongue
- Jaeger's Currant
- Jaeger's Thelypody
- Jamaican Caper
- James' Buckwheat
- James' Telesonix
- James's Penstemon
- Jan's Catchfly
- Japanese anemone
- Japanese cobra lily
- Japanese iris
- Japanese parsley
- Japanese primrose
- Japanese quince
- Japanese spirea
- Japanese toad lily
- Japanese wisteria
- Jatropha
- Javanese glorybower
- Jawleaf Lupine
- Jepson Ceanothus
- Jepson's Brickellbush
- Jepson's Deerweed
- Jepson's Eryngo
- Jepson's Milkvetch
- Jepson's Monkeyflower
- Jepson's Pincushionplant
- Jessica Sticktight
- Jessica's Aster
- Jesup's Milkvetch
- Jeweled Shootingstar
- Jeweled Stenogyne
- Jeweled Wakerobin
- Jewelflower
- Jewels of Opar
- Jicama
- Jim Brush
- Jimsonweed
- Joe-Pye weed
- Johann's Locoweed
- John Day Paintbrush
- Johnny Nip
- Johnson's Blazing Star
- Johnson's False Candytuft
- Johnson's Fishhook Cactus
- Johnson's Indigobush
- Johnston's Buckwheat
- Johnston's Knotweed
- Johnston's Monkey-flower
- Johnston's Rock Cress
- Jointed Buckwheat
- Jolon Clarkia
- Jone's Oxytrope
- Jones' Aster
- Jones' Beardtongue
- Jones' Columbine
- Jones' Dalea
- Jones' Fleabane
- Jones' Linanthus
- Jones' Lupine
- Jones' Nailwort
- Jones' Penstemon
- Jones' Pitcherplant
- Jones' Stickseed
- Jones's Bushmallow
- Jordal's False Candytuft
- Judas tree
- Jugflower
- Jumping Cholla
- Junior Tom Thumb Cactus
- Juniper Beardtongue
- Juniper Tumble-mustard
- Juniper-scrub Beardtongue
- Kaala Stenogyne
- Kaanapali Stenogyne
- Kahili Phyllostegia
- Kahili Ridge Yellow Loosestrife
- Kaibab Beardtongue
- Kaibab Bird's Beak
- Kaibab Indian Paintbrush
- Kaibab Pussytoes
- Kaibab Suncup
- Kaiholena Cyanea
- Kaiparowits Milkvetch
- Kaka beak
- Kalalau Valley Remya
- Kalalau Valley Starviolet
- Kalalau Valley Stenogyne
- Kalanchoe
- Kalimeris
- Kalm's Lobelia
- Kamchatka Aconite
- Kamchatka Fritillary
- Kamchatka Rhododendron
- Kamchatka Thistle
- Kangaroo apple
- Kapana
- Kates Mountain Clover
- Kauai Blacksnakeroot
- Kauai Bottlebrush
- Kauai Clermontia
- Kauai Colicwood
- Kauai Cyanea
- Kauai Delissea
- Kauai False Lobelia
- Kauai Island-Aster
- Kauai Jackbean
- Kauai Pa'iniu
- Kauai Pricklyash
- Kauai Remya
- Kauai Sandmat
- Kauai Schiedea
- Kauai Starviolet
- Kauai Treecotton
- Kauai Yellow Loosestrife
- Kauaula Stenogyne
- Kawa'u
- Kaweah Brodiaea
- Kaweah Monkeyflower
- Keal's Stenogyne
- Kealia Cyanea
- Kearney Blue-star
- Keck's Beardtongue
- Keck's Checker Mallow
- Keck's Phacelia
- Keckiella
- Kellogg Snapdragon
- Kellogg's Buckwheat
- Kellogg's Monkeyflower
- Kellogg's Spurred Lupine
- Kelsey's Phlox
- Kelso Creek Monkeyflower
- Kelvin Pricklypear
- Kenwood Marsh Checker Mallow
- Kern Bird's Beak
- Kern Brodiaea
- Kern Canyon Clarkia
- Kern County Evening Primrose
- Kern County Larkspur
- Kern County Milkvetch
- Kern Frasera
- Kern Mallow
- Kern River Clarkia
- Kern River Evening Primrose
- Kern River Fleabane
- Kerr's Milkvetch
- Kerry's Paintbrush
- Kettle Falls Lupine
- Key West Heliotrope
- Kidney Leaved Buckwheat
- Kidney vetch
- Kidneyleaf Twayblade
- Kidneyshape Buckwheat
- Kilauea Hau Kuahiwi
- Kilauea Mauna Cyanea
- Kincaid's Lupine
- King's Aster
- King's Beardtongue
- King's Bird's Beak
- King's Campion
- King's Clover
- King's Dalea
- King's Lupine
- King's Scepter Gentian
- King's Snapdragon
- Kings River Monkeyflower
- Kirtley's Nemophila
- Kiss Me Quick
- Kiss-me-over-the-garden-gate
- Kittentails
- Kittitas Larkspur
- Klamath Erigeron
- Klamath Gooseberry
- Klamath Rock Cress
- Klamath Rushlily
- Klickitat Aster
- Knapweed
- Knautia
- Knight's Milkvetch
- Knotweed
- Ko'oloa 'Ula
- Kobuk Locoweed
- Kodiak Keyflower
- Koehler's Stipitate Rockcress
- Kohala Mountain Clermontia
- Kohala Summit Melicope
- Kohleria
- Kokea Lau Li'I
- Kokee Starviolet
- Kokio
- Kokrines Locoweed
- Kolea
- Kolekole Cyanea
- Kolekole Lehua
- Koloa Clermontia
- Koolau Range 'Ohe
- Koolau Range Lobelia
- Koolau Range Papala
- Koolau Range Rollandia
- Koolau Range Sandmat
- Kopa
- Korean azalea
- Korean lilac
- Korean mint
- Korean rhododendron
- Kōtukutuku
- Koyukuk Locoweed
- Kral's Aster
- Kral's Beardtongue
- Krukeberg's Jewel Flower
- Kudzu
- Kuhi'aikamo'owahie
- Kului
- Kunth's Cyanea
- Kunzea
- La Cuesta Ceanothus
- La Graciosa Thistle
- Labrador Lousewort
- Labrador violet
- Lace Hedgehog Cactus
- Lacespine Nipple Cactus
- Lachenalia
- Lackschewitz's Fleabane
- Lackschewitz's Milkvetch
- Lacy phacelia
- Lady Bird's Centaury
- Lady Lupine
- Lady orchid
- Ladybells
- Ladybloom
- Laelia
- Laguna Mountain Alumroot
- Lahontan Basin Wild Buckwheat
- Lahontan Beardtongue
- Lake Almanor Clarkia
- Lake County Mock Stonecrop
- Lake Powell Fleabane
- Lake Tahoe Lupine
- Lake Wales Balm
- Lakela's Pinweed
- Lakeside Buck Brush
- Lamb's ear
- Lampranthus
- Lanai Island-Aster
- Lanai Islandmint
- Lance Leaf Blanket Flower
- Lance-leaf sage
- Lanceleaf Beardtongue
- Lanceleaf Cyanea
- Lanceleaf Frogfruit
- Lanceleaf Liveforever
- Lanceleaf Nightshade
- Lanceleaf Springbeauty
- Lanceleaf Ticktrefoil
- Lanceleaf Wake-robin
- Lanceleaf Wild Licorice
- Lane Mountain Milkvetch
- Langlois's Violet
- Lanszwert's Pea
- Lantern tree
- Lapalapa
- Lapland Cornel
- Lapland Rosebay
- Larch-leaf Beardtongue
- Lardizabala
- Laredo Flax
- Laredo Sandmat
- Large beardtongue
- Large Camas
- Large Clammyweed
- Large Fruited Stephanomeria
- Large Leather-root
- Large Speedwell
- Large thyme
- Large Toothwort
- Large Whorled Pogonia
- Large-Flowered Brodiaea
- Large-flowered butterwort
- Large-fruit Sand-verbena
- Large-leaved aster
- Large-seeded Nodding Campion
- Largebract Spiderling
- Largebract Ticktrefoil
- Largeflower Aster
- Largeflower Crested Coralroot
- Largeflower False Rosemary
- Largeflower Flameflower
- Largeflower Fleabane
- Largeflower Heartleaf
- Largeflower Linanthus
- Largeflower Phacelia
- Largeflower Rose Gentian
- Largeflower Sage
- Largeflower Skeletonplant
- Largeflower Skullcap
- Largeflower Spike Primrose
- Largeflower Valerian
- Largehead Clover
- Largeleaf Jointweed
- Largeleaf Leather-root
- Largeleaf Phlox
- Largepod Pinweed
- Largeroot Morning-glory
- Larkspurleaf Monkshood
- Larsen's Ironweed
- Las Vegas Tumblemustard
- Lassen Clarkia
- Lassen Parsley
- Lassicus Lupine
- Lassicus Mock Sandwort
- Late Horse Gentian
- Late purple aster
- Latimer's Woodland Gilia
- Lava Ankle-aster
- Lava Clermontia
- Lava Hau Kuahiwi
- Lava Lobelia
- Lavafield Jackbean
- Lavandin
- Lavaslope False Lobelia
- Lavatera
- Lavender Bladderwort
- Lavender Oldfield Aster
- Lavender Sage
- Lavender Woollystar
- Lax Beardtongue
- Laxmann's Milkvetch
- Layne's Monkey-flower
- Le Conte's Thistle
- Leachlobe Cyphomeris
- Leadplant
- Leadville Milkvetch
- Leafless Beaked Lady Orchid
- Leafy Fleabane
- Leafy Nama
- Leafy Pea
- Leafy Prairie Clover
- Leafy Rosemary-mint
- Leafy Skyrocket
- Leafybract Aster
- Least Basil
- Least Flowered Monkey Flower
- Leather flower
- Leather-leaf Airplant
- Leather-leaf Spiderwort
- Leatherleaf Cyanea
- Leavenworth's Eryngo
- Leavenworth's Vetch
- Lechenaultia
- LeConte's Hybrid Violet
- Ledge Stonecrop
- Leding's Hedgehog Cactus
- Lee's Bitter-root
- Leea
- Leechleaf Cyanea
- Leedy's Roseroot
- Leek
- Leggett's Pinweed
- Lehua Papa
- Leiberg's Clover
- Leiberg's Fleabane
- Leiberg's Phacelia
- Lemhi Beardtongue
- Lemhi Milkvetch
- Lemmon's Ceanothus
- Lemmon's Cologania
- Lemmon's Jewelflower
- Lemmon's Lupine
- Lemmon's Milkvetch
- Lemmon's Phacelia
- Lemmon's Rock Cress
- Lemmon's Sage
- Lemmon's Wildginger
- Lemon Mint
- Lemon Scurfpea
- Lemon Thyme
- Lemon verbena
- Lenten rose
- Lentil
- Leonard's Beardtongue
- Leonard's Skullcap
- Leoncita False Foxglove
- Leopard lily
- Leptodermis
- Lesser burdock
- Lesser Calamint
- Lesser fringed gentian
- Lesser Indian Paintbrush
- Lesser Purple Fringed Orchid
- Lesser Rushy Milkvetch
- Lesser Snapdragon
- Lesser Three-keeled Milkvetch
- Lesser Wirelettuce
- Lesser Yellow Lady's Slipper
- Lesser Yellowthroat Gilia
- Lessingia
- Leucadendron
- Lewis' Clarkia
- Lewis' Monkeyflower
- Lewisia
- Lewton's Milkwort
- Licorice
- Licorice Bedstraw
- Licorice Weed
- Light Yellow Lupine
- Lignum vitae
- Lilac Penstemon
- Lilac sage
- Lilac sun orchid
- Lilac tasselflower
- Lily magnolia
- Lily-leaved Twayblade
- Lilyturf
- Limahuli Valley Cyanea
- Limber Honeysuckle
- Limerock Milkvine
- Limestone Beardtongue
- Limestone Blue-eyed Grass
- Limestone Bugheal
- Limestone Calamint
- Limestone Fameflower
- Limestone Glade Milkvetch
- Limestone Larkspur
- Limestone Milkvetch
- Limestone Phacelia
- Limestone Prairie Fleabane
- Limestone Ruellia
- Limestone Violet
- Limestone woundwort
- Linanthus
- Lindelofia
- Lindheimer's Hoarypea
- Lindheimer's Milkvetch
- Lindheimer's Morning-glory
- Lindheimer's Paintbrush
- Lindheimer's Ticktrefoil
- Lindley's Aster
- Lindsey's Cyanea
- Link Trail Columbine
- Lipstick plant
- Lithodora
- Little Belt Mountain Thimbleweed
- Little Betony
- Little Brown Jug
- Little Bun Milkvetch
- Little Butter 'n' Eggs
- Little Desert Trumpet
- Little Elephantshead
- Little Gilia
- Little Glandular Lessingia
- Little Heartleaf
- Little Mountain Anemone
- Little Reddish Indian Paintbrush
- Little Redstem Monkeyflower
- Little Sand Verbena
- Little Weaselsnout
- Little-cup Beardtongue
- Little-leaf Bitter Cress
- Little-leaf Milkwort
- Little-leaf Wrightwort
- Littleflower Ipomopsis
- Littleflower Penstemon
- Littlefoot Nemophila
- Littleleaf Brickellbush
- Littleleaf Bush Beardtongue
- Littleleaf Ceanothus
- Littleleaf Greentwig
- Littleleaf Milkpea
- Littleleaf Ratany
- Littleleaf Rockcress
- Littleleaf Skullcap
- Littlewoman
- Livermore Stickseed
- Liverwort Monkeyflower
- Livingstone daisy
- Lizard orchid
- Lloyd's Hedgehog Cactus
- Loa Milkvetch
- Lobb's Fiddleleaf
- Lobed Croton
- Lobed Fleabane
- Locoweed
- Lodgepole Lupine
- Loma Prieta hoita
- Lompoc Yerba Santa
- London plane tree
- Lone Pine Beardtongue
- Lone Pine Milkvetch
- Lonestar Four O'Clock
- Long Key Locustberry
- Long Leaf Paintbrush
- Long Leaf Speedwell
- Long Ray Brodiaea
- Long Valley Tumblemustard
- Long-bract Frog Orchid
- Long-bracted Spiderwort
- Long-flower Beardtongue
- Long-foot Cyanea
- Long-fruit Jewel Flower
- Long-headed poppy
- Long-leaf Bluets
- Long-sepal Globemallow
- Long-sepal Penstemon
- Long-tubercle Beehive Cactus
- Long's Jacob's-ladder
- Long's Northern Rock Cress
- Longbeard Mariposa Lily
- Longbract Wakerobin
- Longdisk Sneezeweed
- Longflower Alumroot
- Longflower Tuberose
- Longgland Orchid
- Longhair Phlox
- Longhorn Steer's-head
- Longleaf Aster
- Longleaf Bush Lupine
- Longleaf Cologania
- Longleaf Fleabane
- Longleaf Isodendrion
- Longleaf Lobelia
- Longleaf Milkpea
- Longleaf Milkweed
- Longleaf Mock Thelypody
- Longleaf Phlox
- Longleaf Spiderwort
- Longpod Stitchwort
- Longroot Smartweed
- Longsepal False Dragonhead
- Longspike Indian Paintbrush
- Longspur Balm
- Longspur Lupine
- Longspur Violet
- Longstalk Clover
- Longstalk Phacelia
- Longtail Wildginger
- Longtube Ipomopsis
- Longtube Iris
- Loomis' Mountainmint
- Loomis' Yellow Loosestrife
- Looseflower Milkvetch
- Looseflower Water-willow
- Loosestrife
- Lordsburg Noino
- Lori's Columbine
- Loropetalum
- Los Alamos Beardtongue
- Los Pinitos Dodder
- Lost River Campion
- Lotebush
- Lott's Gilia
- Lotus Milkvetch
- Louisiana Bluestar
- Louisiana Broomrape
- Louisiana Devil's-claw
- Louisiana iris
- Louisiana Lettuce
- Louisiana Trillium
- Lousewort
- Lovell's Hybrid Violet
- Low Baby's Breath
- Low Beardtongue
- Low Loosestrife
- Low Phacelia
- Low Prairie Clover
- Low Pussytoes
- Low Rough Aster
- Low Sandmat
- Low Watermilfoil
- Lowrie's Blue Wood Aster
- Lucia Gooseberry
- Lucy's Hybrid Violet
- Lumholtz's Prairie Clover
- Luna County Globe-mallow
- Lunar Crater Buckwheat
- Lundell's Phacelia
- Lungwort
- Lyall's Milkvetch
- Lyall's Penstemon
- Lyall's Rockcress
- Lyall's Star Tulip
- Lycaste
- Lychnis
- Lyon's Phacelia
- Lyre-leaf rockcress
- Lyreleaf Jewelflower
- Lyreleaf sage
- Ma'ohi'ohi
- Macbridea
- Macdonald Rockcress
- Macdougal Verbena
- Macdougal's Biscuitroot
- Macdougal's Bluebells
- Macedonian scabious
- MacFarlane's Four-o'clock
- Mackenzie's Willow
- Macomb's Ipomopsis
- Macoun's Blue Eyed Grass
- Macoun's Fringed Gentian
- Macoun's Woodroot
- Mad River Daisy
- Madera Linanthus
- Magnificent Monkeyflower
- Maguire Primrose
- Maguire's Beardtongue
- Maguire's Campion
- Mahogany Milkweed
- Maid Marian
- Maid Of The Mist
- Maiden Blue Eyed Mary
- Maiden Pink
- Makaha Valley Jackbean
- Malabar spinach
- Malaysian apple
- Malcolmia
- Malope
- Malteana Hybrid Violet
- Maltese centaury
- Maltese cross
- Malva Rosa Island Mallow
- Mammillaria
- Man Of The Earth
- Manatee River Airplant
- Manchurian lilac
- Mancos Columbine
- Mancos Milkvetch
- Mancos Penstemon
- Mancos Rose
- Manfreda
- Mangas Spring Phacelia
- Mangosteen
- Manihot
- Mann's Cyanea
- Manono
- Manuka
- Many-flowered Unicorn Plant
- Manyflower Broomrape
- Manyflower Grasspink
- Manyflower Stickseed
- Manyflowered Ipomopsis
- Manyflowered Navarretia
- Manyleaf Gilia
- Manyray Aster
- Manystem Pea
- Manystem Ratany
- Maple Leaved Checker Mallow
- Maple-leaf Currant
- Marbled Wildginger
- Marcescent Dudleya
- Margaret's Rushy Milkvetch
- Marigold Pincushionplant
- Marin Checker Mallow
- Mariposa Clarkia
- Mariposa Monkeyflower
- Mariposa Phacelia
- Maritime Ceanothus
- Maritime Larkspur
- Marked Gilia
- Marked Woollystar
- Marks' Cyanea
- Maroon Blanketflower
- Maroon Carolina Milkvine
- Maroonspot Calicoflower
- Marsh bellflower
- Marsh blue violet
- Marsh Cinquefoil
- Marsh gentian
- Marsh helleborine
- Marsh lousewort
- Marsh orchid
- Marsh pea
- Marsh Phlox
- Marsh Skullcap
- Marsh Speedwell
- Marsh Thistle
- Marsh Violet
- Marsh woundwort
- Marsh's Dutchman's Pipe
- Martagon lily
- Martin's Clover
- Martin's Silverleaf Milkvetch
- Maryland Meadowbeauty
- Maryland Milkwort
- Maryland Violet
- Marysvale Fleabane
- Masdevallia
- Mashua
- Mask flower
- Mason's Jacob's-ladder
- Masonic Mountain Jewelflower
- Masonic Rock Cress
- Mat Milkvetch
- Mat Penstemon
- Mat Prickly Phlox
- Mat Vetch
- Mat-root Beardtongue
- Mathis' Spiderling
- Matt Turner's Aster
- Matted Buckwheat
- Matted Fiddleleaf
- Matted Lupine
- Maui Clermontia
- Maui Cyanea
- Maui Islandmint
- Maui Lobelia
- Maui Stenogyne
- Maui Tetramolopium
- Mauna Kea Silversword
- Mauna Loa Clermontia
- Mayfly orchid
- Mazus
- Mcallister's Phlox
- Mceldowney's Cyanea
- Mcvicker's Gilia
- Meadow Beardtongue
- Meadow beauty
- Meadow Bistort
- Meadow cranesbill
- Meadow Flax
- Meadow Jointvetch
- Meadow Knapweed
- Meadow Larkspur
- Meadow Lousewort
- Meadow Milkvetch
- Meadow Sage
- Meadow Thistle
- Meadow-rue
- Meager Pygmydaisy
- Mealycup sage
- Mecca Woodyaster
- Meconopsis
- Medinilla
- Mediterranean sea holly
- Meehan's mint
- Melancholy Thistle
- Melastoma
- Melonleaf Nightshade
- Mendocino Ceanothus
- Mendocino Coast Indian Paintbrush
- Mendocino Erigeron
- Mendocino Gentian
- Mendocino Lessingia
- Menges' Flameflower
- Menker's Lupine
- Menzies' larkspur
- Menzies' Penstemon
- Merced Clarkia
- Mertens' Oxytrope
- Mesa Tansyaster
- Mesa Verde Stickseed
- Mesamint
- Mescalero Milkwort
- Metcalf Canyon Jewel Flower
- Metcalfe's Beardtongue
- Metcalfe's Ticktrefoil
- Mexicali Onion
- Mexican Bladdersage
- Mexican Blazing Star
- Mexican Clammyweed
- Mexican Cologania
- Mexican Crinklemat
- Mexican Devil's-claws
- Mexican flame vine
- Mexican hat
- Mexican heather
- Mexican Hedgenettle
- Mexican Mimosa
- Mexican morning glory
- Mexican Mudplantain
- Mexican Navelwort
- Mexican Passionflower
- Mexican Prairie Clover
- Mexican Redbud
- Mexican sage
- Mexican Skullcap
- Mexican Tansyaster
- Mexican Whorled Milkweed
- Mexican Wrightwort
- Mezereon
- Miami Blue-eyed Grass
- Miami Mist
- Michaux's Milkweed
- Middle Park Beardtongue
- Midland Fawnlily
- Mildred's Clarkia
- Military orchid
- Milk Aster
- Milk Kelloggia
- Milk thistle
- Milkpea
- Milkvetch
- Milkvine
- Milkweed Milkvetch
- Milkwort
- Milkwort Jewel Flower
- Milkwort Knotweed
- Milky Bellflower
- Mill Creek Agoseris
- Mill Creek Alum-root
- Miltonia
- Miniature Gilia
- Miniature lupine
- Miniature Wax Plant
- Miniature Woollystar
- Minidoka Beardtongue
- Minniebush
- Mint bush
- Mint Vervain
- Mint-shrub
- Minthorn's Milkvetch
- Mirror orchid
- Miss Willmott's ghost
- Mississippi River Wakerobin
- Missoula Phlox
- Missouri ironweed
- Missouri Milkvetch
- Mistassini Primrose
- Misty plume bush
- Mitchell's Pitcherplant
- Mitrefruit Pincushionplant
- Mixture Hybrid Violet
- Moab Milkvetch
- Moab Woody-aster
- Modest Hybrid Violet
- Modest Rock Cress
- Modoc Frasera
- Modoc Gilia
- Modoc Plateau Milkvetch
- Moenkopi Milkvetch
- Moffatt's Beardtongue
- Mogollon Crane's-bill
- Mogollon Deathcamas
- Mogollon Mountain Vetch
- Mohihi
- Mohr's Ironweed
- Mojave aster
- Mojave Desertparsley
- Mojave Fringed Onion
- Mojave Indigobush
- Mojave Linanthus
- Mojave Lupine
- Mojave Milkvetch
- Mojave Monkey-flower
- Mojave mound cactus
- Mojave Penstemon
- Mojave Phacelia
- Mojave Sage
- Mojave Thistle
- Mokiak Milkvetch
- Molokai Cyanea
- Molokai Islandmint
- Molokai Jackbean
- Molokai Phyllostegia
- Molokai Schiedea
- Moltkia
- Monardella
- Mongolian scabious
- Monkey orchid
- Mono Beardtongue
- Mono Lake Lupine
- Mono Lupine
- Mono Milkvetch
- Monochoria
- Montana Locoweed
- Montane Coneflower
- Monte Neva Indian Paintbrush
- Montell Bractspike
- Monterey Buck Brush
- Monterey Clover
- Monterey Indian Paintbrush
- Monterey Mariposa Lily
- Monterey Spineflower
- Monti's Milkvetch
- Montia-like Monkeyflower
- Monument Valley Milkvetch
- Moore's Pitcherplant
- Moradia
- Moraea
- Moreno Currant
- Morning star lily
- Morrison's Jewel Flower
- Morro Milkvetch
- Morton's Canadian Milkvetch
- Mosquin's Clarkia
- Mosquito Bills
- Mosquito flower
- Moss campion
- Moss Gentian
- Moss verbena
- Most Beautiful Jewel Flower
- Motherwort
- Mount Eddy Jacob's-ladder
- Mount Hamilton Jewel Flower
- Mount Hamilton Paintbrush
- Mount Moriah Beardtongue
- Mount Pinos Larkspur
- Mount Shasta Jacob's-ladder
- Mount Trumbull Beardtongue
- Mountain Alsinidendron
- Mountain Ball Cactus
- Mountain Bladderpod
- Mountain Blue Penstemon
- Mountain Blue-eyed Grass
- Mountain Bluet
- Mountain Bush Lupine
- Mountain Cross
- Mountain devil
- Mountain Doll's Daisy
- Mountain False Indigo
- Mountain Figwort
- Mountain Fleece
- Mountain Giant Hyssop
- Mountain Harebell
- Mountain Heartleaf
- Mountain hydrangea
- Mountain Kittentails
- Mountain Lady's Slipper
- Mountain Larkspur
- Mountain Lousewort
- Mountain Lupine
- Mountain Meadow-rue
- Mountain mint
- Mountain Owl's-clover
- Mountain Oxytrope
- Mountain pansy
- Mountain Phacelia
- Mountain Phlox
- Mountain Pink Currant
- Mountain Pride
- Mountain sage
- Mountain Saucerflower
- Mountain Springparsley
- Mountain Springs Bush Lupine
- Mountain Thistle
- Mountain Threadplant
- Mountainmist
- Mourning iris
- Mourning Milkvetch
- Mouse Plant
- Moving Polemonium
- Mt. Adams Lupine
- Mt. Diablo Jewel Flower
- Mt. Diablo Lupine
- Mt. Diablo Phacelia
- Mt. Eddy Lupine
- Mt. Hamilton Bellflower
- Mt. Hamilton Thistle
- Mt. Hood Pussypaws
- Mt. Kaala Cyanea
- Mt. Kahili Phyllostegia
- Mt. Lassen Fleabane
- Mt. Mazama Collomia
- Mt. Rainier Paintbrush
- Mt. Tamalpais Jewelflower
- Mt. Tamalpais Lessingia
- Mt. Waialeale 'Ohe
- Mt. Washington Beardtongue
- Muchbranched Groundsmoke
- Mucronate Beardtongue
- Mud Fiddleleaf
- Mudplantain
- Muenscher's Waternymph
- Mulford's Hybrid Violet
- Mulla mulla
- Multibloom Hoarypea
- Munci's Rock Cress
- Munro's Cyanea
- Munz Cholla
- Munz's Hedgehog Cactus
- Munz's Iris
- Munz's Mariposa Lily
- Munz's Onion
- Munz's Sage
- Murdock's Thistle
- Murray's Rock Cress
- Musk thistle
- Muskeg Lousewort
- Mussaenda
- Mussentuchit Creek Gilia
- Mustang Clover
- Mustang Grape
- Mustang Monardella
- Myers' Pincushionplant
- Mysore trumpet vine
- Na Pali Sandmat
- Nailwort
- Naio
- Naked Broomrape
- Naked Buckwheat
- Naked Mariposa Lily
- Naked Mexican Hat
- Naked Milkvetch
- Naked-flower Tick-trefoil
- Naked-stem False Wallflower
- Naked-stemmed Evening-primrose
- Nakedstem Phacelia
- Napa Biscuitroot
- Napa Bluecurls
- Napa False Indigo
- Napa Hybrid Violet
- Napa Milkvetch
- Napali Coast Papala
- Narcissus Anemone
- Narrow Leaved Pansy Monkeyflower
- Narrow Phacelia
- Narrow-leaf coneflower
- Narrow-leaved Everlasting Pea
- Narrow-leaved Hosta
- Narrow-leaved Nightshade
- Narrowfruit Braya
- Narrowleaf Bedstraw
- Narrowleaf Blue-eyed Grass
- Narrowleaf Bluecurls
- Narrowleaf Brickellbush
- Narrowleaf Four O'Clock
- Narrowleaf Gentian
- Narrowleaf Globemallow
- Narrowleaf Hoarypea
- Narrowleaf Indian Breadroot
- Narrowleaf Ironweed
- Narrowleaf Johnny-jump-up
- Narrowleaf Lespedeza
- Narrowleaf Morning-glory
- Narrowleaf Paleseed
- Narrowleaf Pinweed
- Narrowleaf Purple Everlasting
- Narrowleaf Pussytoes
- Narrowleaf Rose Gentian
- Narrowleaf Saw-wort
- Narrowleaf Skullcap
- Narrowleaf Stenogyne
- Narrowleaf Vervain
- Narrowleaf Water Plantain
- Narrowleaf Wirelettuce
- Narrowpetal Wakerobin
- Nash's Blue-eyed Grass
- Nashville Breadroot
- Natalie's ramonda
- Native fuchsia
- Native violet
- Naturita Milkvetch
- Naupaka
- Navajo Fleabane
- Navajo Mountain Beardtongue
- Navajo Mountain Phlox
- Navajo Thistle
- Navajo Yucca
- Navarretia
- Navelwort
- Nealley's Globe Amaranth
- Nebraska Aster
- Nebraska Lupine
- Nebraska Tansyaster
- Neches River Rosemallow
- Necklace Gladecress
- Needle Blue-eyed Grass
- Needle Mountain Milkvetch
- Needle's Buckwheat
- Needleleaf Bluet
- Needleleaf Navarretia
- Needleleaf Waternymph
- Needletip Blue-eyed Grass
- Neelakurinji
- Neese's Blue Mountain Beardtongue
- Nellie Cory Cactus
- Nelson's Checker Mallow
- Nelson's Mimosa
- Nemesia
- Neoregelia
- Nerine
- Netleaf Leather Flower
- Netleaf Willow
- Netted Anoda
- Netted Globe-cherry
- Netted Pawpaw
- Nettle-leaved bellflower
- Nettleleaf Giant Hyssop
- Nettleleaf Sage
- Nevada Bedstraw
- Nevada Blue Eyed Grass
- Nevada City Buckwheat
- Nevada Dalea
- Nevada Diggerplant
- Nevada Gilia
- Nevada Jacob's-ladder
- Nevada Lupine
- Nevada Pea
- Nevada Primrose
- Nevada Sand-dune Beardtongue
- Nevada Willowherb
- Nevin's Bird's Beak
- Nevin's Brickellbush
- Nevin's Gilia
- New England Blazing Star
- New England Blue Violet
- New Guinea impatiens
- New Mexican Nightshade
- New Mexican Roseroot
- New Mexico Beardtongue
- New Mexico Bird's-foot Trefoil
- New Mexico Copperleaf
- New Mexico Fameflower
- New Mexico Fanpetals
- New Mexico Figwort
- New Mexico Larkspur
- New Mexico Locust
- New Mexico Lupine
- New Mexico Milkvetch
- New Mexico Milkwort
- New Mexico Phacelia
- New Mexico Spanish Bayonet
- New Mexico Spinystar
- New Mexico Starviolet
- New Mexico Stickseed
- New Mexico Tansyaster
- New Mexico Thistle
- New Mexico Ticktrefoil
- New South Wales Christmas bush
- New York aster
- New York ironweed
- New Zealand flax
- Newberry's Milkvetch
- Newton's Larkspur
- Night phlox
- Night-scented stock
- Nightcaps
- Niihau Lobelia
- Nine Mile Canyon Phacelia
- Nipomo Mesa Ceanothus
- Nipple Beach Phacelia
- Nipple Beehive Cactus
- Nipplefruit
- Nodding blue lily
- Nodding Buckwheat
- Nodding Locoweed
- Nodding Mandarin
- Nodding Nixie
- Nodding onion
- Nodding Pinweed
- Nodding Rock Cress
- Nodding Spurge
- Nodding Stickseed
- Nodding Thelypody
- Nodding Wakerobin
- Noel's Owl's Clover
- Nolana
- Nootka Lupine
- Nootka Rose
- North Coast Phacelia
- North Idaho Monkeyflower
- North Umpqua Kalmiopsis
- Northern Asphodel
- Northern Beardtongue
- Northern Blue Monkshood
- Northern Blue-eyed Grass
- Northern Bluethread
- Northern Bog Aster
- Northern Bog Hybrid Violet
- Northern Bog Violet
- Northern Bush Honeysuckle
- Northern Channel Islands Phacelia
- Northern Clarkia
- Northern Coastal Violet
- Northern Comandra
- Northern Dragonhead
- Northern False Candytuft
- Northern False Coolwort
- Northern Freckled Milkvetch
- Northern Groundcone
- Northern Indian Paintbrush
- Northern Jacob's-ladder
- Northern Jointvetch
- Northern Larkspur
- Northern Linanthus
- Northern marsh-orchid
- Northern Needleleaf
- Northern Plains Blazing Star
- Northern Primrose
- Northern Sweetvetch
- Northern wild comfrey
- Northern Willowherb
- Northern Woodland Violet
- Northpark Phacelia
- Northwestern Indian Paintbrush
- Northwestern Thelypody
- Nose Skullcap
- Notch-leaf phacelia
- Notchleaf Clover
- Nuttall's larkspur
- Nuttall's Lobelia
- Nuttall's Meadowbeauty
- Nuttall's Milkvetch
- Nuttall's Milkwort
- Nuttall's Oxytrope
- Nuttall's Pleatleaf
- Nuttall's Thistle
- Nuttall's Ticktrefoil
- Nuttall's Toothwort
- Nutzotin Milkvetch
- Nye County Fishhook Cactus
- Nye Gilia
- Nye Milkvetch
- Nylon Hedgehog Cactus
- O'Ahu Cyanea
- Oahu Clermontia
- Oahu Lobelia
- Oahu Phyllostegia
- Oahu Pohe Hiwa
- Oahu Riverhemp
- Oahu Rollandia
- Oahu Sandmat
- Oahu Schiedea
- Oahu Stenogyne
- Oahu Violet
- Oak Ridge Lupine
- Oakes' Eyebright
- Oakleaf Cyanea
- Oakleaf Fleabane
- Oakleaf Hydrangea
- Oakwoods Prairie Clover
- Obedient plant
- Oblong Bluecurls
- Oblongleaf Bluebells
- Oblongleaf False Pennyroyal
- Oblongleaf Snakeherb
- Ocala Vetch
- Oceanblue Phacelia
- Ocmulgee Skullcap
- Ocmulgee Trillium
- Ocoee Hedgenettle
- Ocoee Leatherflower
- Oconee azalea
- Ocotillo
- Octopus Tree
- Odontoglossum
- Ogden's Sandmat
- Ogilvie Claytonia
- Ohe
- Ohelo
- Ohelo Ai
- Ohelo Kau La'au
- Ohia lehua
- Ohio spiderwort
- Ojai Fritillary
- Ojo Alamo Fleabane
- Okanogan Stickseed
- Oklahoma Thelypody
- Olapa
- Oldfield Milkvine
- Oldplainsman
- Olive Clover
- Olive-leaved Gromwell
- Olomea
- Olopu
- Olympic Bellflower
- Olympic Cut-Leaf Synthyris
- Olympic Indian Paintbrush
- Olympic Larkspur
- Olympic Pseudosaxifrage
- Olympic Violet
- One Sided Jewel Flower
- One-flowered Broomrape
- One-flowered Sclerolepis
- One-leaflet Torrey's Milkvetch
- One-nerved Ernodea
- One-sided bottlebrush
- Oneflower False Fiddleleaf
- Oneflower Fleabane
- Oneflower Fringed Gentian
- Oneflower Kelseya
- Onehair Mountainmint
- Oneseed Pussypaws
- Oneside Penstemon
- Onesided Threadplant
- Onestem Fleabane
- Ontario Aster
- Ookow
- Open Lupine
- Ophir Pass Rockcress
- Opuhe
- Orange Flameflower
- Orange Gooseberry
- Orange larkspur
- Orange-fruit Horse-gentian
- Orchid cactus
- Orchid primrose
- Orcutt's Aster
- Orcutt's Brodiaea
- Orcutt's Linanthus
- Orcutt's Lupine
- Oregano
- Oregon Anemone
- Oregon Bensoniella
- Oregon Boxleaf
- Oregon Checkerbloom
- Oregon Crane's-bill
- Oregon Currant
- Oregon Eared Rockcress
- Oregon Fetid Adder's-tongue
- Oregon Figwort
- Oregon Vine Maple
- Oregon Violet
- Organ Mountain Figwort
- Organ Mountain Indian Paintbrush
- Organ Mountain Larkspur
- Organpipe Cactus
- Oriental poppy
- Ornamental oregano
- Ornamental Pepper
- Ornamental rhubarb
- Ornate Lupine
- Orpine
- Orzell's Blazing Star
- Osterhout's Beardtongue
- Osterhout's Lupine
- Ostler's Peppergrass
- Otay Mesamint
- Ottertail Pass Saxifrage
- Ottley's Bird's-foot Trefoil
- Ouachita False Indigo
- Ouachita Leatherflower
- Ourisia
- Oval-leaf Clustervine
- Owens Peak Desertparsley
- Owens Valley Beardtongue
- Owens Valley Checker Mallow
- Ownbey's Thistle
- Owyhee Clover
- Owyhee Milkvetch
- Owyhee River Stickseed
- Oxblood Lily
- Oxytrope
- Oyster plant
- Ozark Bluestar
- Ozark Groundplum
- Ozark hairy corkwood
- Ozark Milkvetch
- Ozark Phlox
- Ozark Skullcap
- Ozark Spiderwort
- Ozark Witch-hazel
- Ozette Coralroot
- Pacific Anemone
- Pacific Aster
- Pacific Bleeding Heart
- Pacific Coralroot
- Pacific False Bindweed
- Pacific Gilia
- Pacific Golden Saxifrage
- Pacific Island Clearweed
- Pacific Jewel Flower
- Pacific Lousewort
- Pacific Lupine
- Pacific Mitrewort
- Pacific Pea
- Pacific Rhododendron
- Pacific Waterleaf
- Pacific Willow Dock
- Pacific Yerba Santa
- Packard's Milkvetch
- Paddo Rock Cress
- Padre's Shooting Star
- Pagoda Buckwheat
- Pagoda flower
- Pagumpa Milkvetch
- Pahrump Valley Buckwheat
- Pahute Beardtongue
- Paintbrush lily
- Painted Buckeye
- Painted daisy
- Painted Desert Milkvetch
- Painted lady
- Painted Milkvetch
- Painted petals
- Painted sage
- Painted tongue
- Paiute Buckwheat
- Paiute Mountain Pincushionplant
- Pakaha
- Palafox
- Pale Beardtongue
- Pale Bellflower
- Pale Blue-eyed Grass
- Pale Cologania
- Pale Desert Lupine
- Pale Desert-thorn
- Pale flax
- Pale Fleabane
- Pale Gentian
- Pale Indian Paintbrush
- Pale leather flower
- Pale Lobelia
- Pale Monardella
- Pale Parish's Larkspur
- Pale Phacelia
- Pale purple coneflower
- Pale Small-flowered Paintbrush
- Pale Thistle
- Pale toadflax
- Pale Wallowa Indian Paintbrush
- Pale-spike lobelia
- Paleface
- Pallas' Wallflower
- Pallid Bird's Beak
- Pallid Milkweed
- Palmate Salty Bird's Beak
- Palmer Clematis
- Palmer's Bluestar
- Palmer's Buckwheat
- Palmer's Campion
- Palmer's Catchfly
- Palmer's Clover
- Palmer's Cock's Comb
- Palmer's Crinklemat
- Palmer's Dudleya
- Palmer's Mariposa Lily
- Palmer's Milkvetch
- Palmer's Monardella
- Palmer's Monkeyflower
- Palmer's Penstemon
- Palmer's Phacelia
- Palmer's Spectaclepod
- Palmer's Spineflower
- Palmleaf Indian Breadroot
- Palmleaf Poppymallow
- Palolo Valley Rollandia
- Palomar Monkeyflower
- Palouse Thistle
- Pamakani
- Panaluu Mountain Rollandia
- Panamint Beardtongue
- Panamint Buckwheat
- Panamint Dudleya
- Panamint Milkvetch
- Panamint Mountain Lupine
- Panamint Phacelia
- Panaunau
- Panguitch Silverleaf Milkvetch
- Panicle Hydrangea
- Panicled False Indigo
- Panicledleaf Ticktrefoil
- Pansy Monkeyflower
- Panther Milkvetch
- Pantropical Widelip Orchid
- Papala
- Paper Nailwort
- Papery Cyanea
- Papery Schiedea
- Paphiopedilum
- Parachute Beardtongue
- Paradisetree
- Paradox Milkvetch
- Parashant Woody-aster
- Parasol Clover
- Parasol lily
- Pardancanda
- Paria River Indian Breadroot
- Pariette Cactus
- Pariette Hookless Cactus
- Parish's Bedstraw
- Parish's Bluecurls
- Parish's Broom Rape
- Parish's Burning Bush
- Parish's Checker
- Parish's Desert Larkspur
- Parish's Flowery Puncturebract
- Parish's Gooseberry
- Parish's Monkeyflower
- Parish's Nightshade
- Parish's Phacelia
- Parish's Sandmat
- Parish's Woolly Milkweed
- Park Milkvetch
- Park Rock Cress
- Parodia
- Parrot Pitcherplant
- Parrot's beak
- Parrothead Indian Paintbrush
- Parry's Aster
- Parry's Beardtongue
- Parry's Bellflower
- Parry's Blue Eyed Mary
- Parry's Buckwheat
- Parry's Clover
- Parry's False Prairie-clover
- Parry's Gentian
- Parry's Geranium
- Parry's Knotweed
- Parry's Larkspur
- Parry's Lousewort
- Parry's Mallow
- Parry's Oxytrope
- Parry's Phacelia
- Parry's Sage
- Parry's Saltbush
- Parry's Tetracoccus
- Parry's Thistle
- Parry's Townsend Daisy
- Parry's Wild Petunia
- Parry's Wormwood
- Party-colored Monkeyflower
- Paskenta Grade Dwarf Flax
- Passion fruit
- Pasture thistle
- Patagonia Mountain Leatherpetal
- Patch Phacelia
- Patchouli
- Paterson's curse
- Patersonia
- Patterson's Wormwood
- Pauper Milkvetch
- Pawpaw
- Payette Beardtongue
- Payson Beardtongue
- Payson's Jewelflower
- Payson's Milkvetch
- Pea
- Peach Thorn
- Peach-leaved bellflower
- Peacock anemone
- Peacock flower
- Peacock Larkspur
- Peanut cactus
- Peanut Sandwort
- Pear-fruit False Candytuft
- Peck's Beardtongue
- Peck's Hybrid Violet
- Peck's Milkvetch
- Peck's Paintbrush
- Peck's Phacelia
- Pecos River Skeletonplant
- Pedicellate Phacelia
- Peebles Blue Star
- Peel River Catchfly
- Peirson's Milkvetch
- Peirson's Mountaincrown
- Pele Clermontia
- Pelekunu Trail Yellow Loosestrife
- Pelican Flower
- Peninsular onion
- Penland's Beardtongue
- Pennell's Bird's Beak
- Pennell's Lousewort
- Pennell's Panther
- Pennsylvania Everlasting
- Pennsylvania Pellitory
- Pennyroyal
- Pennyroyal Leaf Phacelia
- Peppermint
- Peppermint Spider Lily
- Peregrina
- Peregrine Thistle
- Perennial Caltrop
- Perennial Flax
- Perennial Fringed Gentian
- Perennial Honesty
- Perennial Rockcress
- Perennial Saltmarsh Aster
- Perennial Verbena
- Perfoliate Spineflower
- Perplexed Ticktrefoil
- Persian clover
- Persian cyclamen
- Persian iris
- Persian ironwood
- Persian lilac
- Persian lily
- Persian speedwell
- Persian violet
- Persicaria
- Persistentflower Phacelia
- Peruvian Zinnia
- Petchoa
- Peterson's Campion
- Petrocosmea
- Phacelia
- Phaius
- Pheasant's eye
- Philadelphia fleabane
- Philippine violet
- Phlomis
- Phragmipedium
- Picabo Milkvetch
- Pickerelweed
- Piedmont False Pimpernel
- Piedmont Indigo Bush
- Piedmont Leather-root
- Piedmont Paw Paw
- Piedmont Pinweed
- Pieris
- Pillpod Sandmat
- Pilo 'Ula
- Pimpernel
- Pincushion Beardtongue
- Pincushion Cactus
- Pincushion Daisy
- Pincushion Flower
- Pincushion hakea
- Pincushion protea
- Pincushionplant
- Pine barren gentian
- Pine Barren Ticktrefoil
- Pine Green Gentian
- Pine Hill Buck Brush
- Pine Hill Flannelbush
- Pine Hyacinth
- Pine lily
- Pine Mat
- Pine Valley Beardtongue
- Pine Valley Milkvetch
- Pine Woods Fritillary
- Pineapple
- Pineapple lily
- Pineapple sage
- Pineforest Prairie Clover
- Pinegrove Gayophytum
- Pineland Butterfly Pea
- Pineland Chaffhead
- Pineland Figwort
- Pineland Leather-root
- Pineland Lobelia
- Pineland Milkpea
- Pineland Passionflower
- Pineland Pinweed
- Pineland Skullcap
- Pineland Snakeherb
- Pineland Water-willow
- Pineleaf penstemon
- Pineoak Jewelflower
- Pinepink
- Pinesap
- Pinewoods Rose Gentian
- Pinewoods Spiderwort
- Pineywoods Geranium
- Pink Funnel Lily
- Pink Fuzzybean
- Pink Honeysuckle
- Pink Mountain Heath
- Pink quill
- Pink Sand Verbena
- Pink Spineflower
- Pink Stickseed
- Pink Thoroughwort
- Pink trumpet tree
- Pink Turtlehead
- Pink Velvetmallow
- Pink Wintergreen
- Pink-margined Monkeyflower
- Pink-scale Blazing Star
- Pinkava's Phacelia
- Pinkava's Prickly Pear
- Pinkflower Hedgehog Cactus
- Pinkglobe Prairie Clover
- Pinkthroat Morning-glory
- Pinos Altos Mountain Bean
- Pinpoint Clover
- Pinto Beardtongue
- Pinto Triplet Lily
- Pinto Violet
- Pinweed
- Pinyon Beardtongue
- Pinyon Gilia
- Pinyon Lupine
- Pinyon Milkvetch
- Pinyon Rock Cress
- Pioneer Rock Cress
- Pismo Clarkia
- Pitcher Sage
- Pitkin Marsh Lily
- Pitseed Goosefoot
- Pitted Onion
- Pittosporum
- Plain Mariposa Lily
- Plains coreopsis
- Plains Ironweed
- Plains Milkvetch
- Plains Milkweed
- Plains Mock Vervain
- Plains Onion
- Plains prickly pear
- Plainsdaisy
- Plank's Catchfly
- Plateau Cyanea
- Plateau False Foxglove
- Plateau Milkvetch
- Plateau Phacelia
- Plateau Rocktrumpet
- Plateau Spiderwort
- Platte River Milkvetch
- Platy Beardtongue
- Pleated Gentian
- Pleatleaf
- Plectranthus
- Pleione
- Plumas Alpine Aster
- Plumas Lupine
- Plumed Brickellbush
- Plumed Clover
- Plumed Crinklemat
- Plumed Jewel Flower
- Plumeless thistle
- Plumleaf azalea
- Plummer's Candyleaf
- Plummer's Clover
- Plummer's Mariposa Lily
- Poeppig's Rose-mallow
- Poet's Shooting Star
- Pohe Hiwa
- Pohil's Milkvetch
- Pohutukawa
- Point Reyes Bird's-beak
- Point Reyes Ceanothus
- Point Reyes Checker Mallow
- Point Reyes Lupine
- Point Sublime Wild Buckwheat
- Pointed Phlox
- Pointedleaf Ticktrefoil
- Pointedtip Mariposa Lily
- Poison Canyon Stickseed
- Polar Eyebright
- Polar Milkvetch
- Pond's Mojave Lupine
- Ponderosa Violet
- Pontechium
- Pony Beebalm
- Poor Knights lily
- Poorjoe
- Pope's Phacelia
- Popolo
- Poppy mallow
- Porcupine River Thimbleweed
- Porcupine tomato
- Port Clarence Indian Paintbrush
- Porter's Hybrid Violet
- Porter's Indian Paintbrush
- Portuguese squill
- Potato
- Potato creeper
- Potbelly Airplant
- Poverty Mountain Breadroot
- Powder Puff Tree
- Powdered Milkvetch
- Powdery Alligator-flag
- Prairie Agalinis
- Prairie Aster
- Prairie blazing star
- Prairie Blue-eyed Grass
- Prairie Bluebells
- Prairie Brazosmint
- Prairie Camas
- Prairie clover
- Prairie iris
- Prairie Ironweed
- Prairie Lespedeza
- Prairie Milkvetch
- Prairie Milkvine
- Prairie Nymph
- Prairie Onion
- Prairie Paintbrush
- Prairie Petunia
- Prairie Phacelia
- Prairie Phlox
- Prairie Pinweed
- Prairie Poppy Mallow
- Prairie Rose
- Prairie smoke
- Prairie spiderwort
- Prairie Thistle
- Prairie Trillium
- Prairie Turnip
- Prairie Venus' Looking-glass
- Prairie verbena
- Prairie violet
- Prairie-fire Pink
- Presidio Clarkia
- Pretty Dalea
- Preuss' Milkvetch
- Pribilof Dwarf Gentian
- Price's Groundnut
- Prickleleaf
- Prickly Comfrey
- Prickly Cyanea
- Prickly poppy
- Prickly Rose
- Prickly waterlily
- Pride of Barbados
- Pride of Burma
- Pride Of California
- Pride of De Kaap
- Pride of Madeira
- Prince Edward Island Hybrid Violet
- Prince's Feather
- Princess Tree
- Pringle's Bird's Beak
- Pringle's Catchfly
- Pringle's Clustervine
- Pringle's Fleabane
- Pringle's Giant Hyssop
- Pringle's Monardella
- Pringle's Phacelia
- Pringle's Pleatleaf
- Pringle's Prairie Clover
- Prism Bouchea
- Privetleaf Schiedea
- Procession Flower
- Professor's Fleabane
- Profuseflower Mesamint
- Propeller Flower
- Prostrate Ceanothus
- Prostrate Clarkia
- Prostrate Milkvetch
- Prostrate Mountain Phlox
- Prostrate Pincushionplant
- Prostrate speedwell
- Prostrate Ticktrefoil
- Providence Mountain Milkvetch
- Pryor Mountains Bladderpod
- Pua Kala
- Puakauhi
- Puffcalyx Gilia
- Puna Cyanea
- Punaluu Cyanea
- Pungent Brickellbush
- Purdy's Beardtongue
- Purdy's Fringed Onion
- Purdy's Fritillary
- Purdy's Iris
- Pūriri
- Purple allamanda
- Purple Amole
- Purple avens
- Purple Bedstraw
- Purple bell vine
- Purple bergamot
- Purple Bergenia
- Purple Bird's Beak
- Purple Bitter Cress
- Purple Bladderpod
- Purple bladderwort
- Purple bluets
- Purple broom
- Purple Bushbean
- Purple cestrum
- Purple clematis
- Purple coltsfoot
- Purple Cushion Fleabane
- Purple Cyanea
- Purple Dalea
- Purple deadnettle
- Purple Desert Lupine
- Purple donkey orchid
- Purple enamel orchid
- Purple Fairy-lantern
- Purple False Foxglove
- Purple False Gilyflower
- Purple fawnlily
- Purple flag
- Purple Fleabane
- Purple fringed orchid
- Purple Fringeless Orchid
- Purple Gaymallow
- Purple gentian
- Purple giant hyssop
- Purple gromwell
- Purple ground cherry
- Purple heart
- Purple hyacinth orchid
- Purple Leatherflower
- Purple Leptotaenia
- Purple Locoweed
- Purple mat
- Purple Meadow-rue
- Purple Meadowparsnip
- Purple milk thistle
- Purple milk-vetch
- Purple milkweed
- Purple Monkeyflower
- Purple Mountainheath
- Purple Mountainparsley
- Purple mullein
- Purple nightshade
- Purple owl's clover
- Purple oxytropis
- Purple Penstemon
- Purple Petal Bog Orchid
- Purple phacelia
- Purple pitcher plant
- Purple prairie clover
- Purple Pricklypear
- Purple Rattlesnakeroot
- Purple rocket
- Purple Rushlily
- Purple sage
- Purple sand verbena
- Purple Sanicle
- Purple saxifrage
- Purple Scalystem
- Purple Shrimp Plant
- Purple spur flower
- Purple Sweetroot
- Purple toadflax
- Purple toothwort
- Purple Turtlehead
- Purple vetch
- Purple Woody Rockcress
- Purple Wormwood
- Purple-flowering raspberry
- Purple-net Toadflax
- Purple-stemmed aster
- Purple-white Owl-clover
- Purpledisk Helianthella
- Purpledisk Honeycomb-head
- Purpleflower Blacksnakeroot
- Purplefruit Stenogyne
- Purpleleaf Willowherb
- Purplenerve Springparsley
- Purplespot Gilia
- Purplestem Phacelia
- Purpletassels
- Purpletop vervain
- Purpus' Phacelia
- Purpus' Tumble-mustard
- Pursh's Wild Petunia
- Purslane
- Puya
- Pycnostachys
- Pygmy Aster
- Pygmy Bluet
- Pygmy Clover
- Pygmy Fleabane
- Pygmy Gentian
- Pygmy Linanthus
- Pygmy Saxifrage
- Pygmyflower Vetch
- Pyramid Bush
- Pyramidal orchid
- Queen Thistle
- Queen's crape myrtle
- Queen's wreath
- Queensland tree waratah
- Quick's Phacelia
- Quill Fleabane
- Quill-leaf Airplant
- Rabbit Thorn
- Rabbit Valley Gilia
- Rabbit-ear iris
- Racemed Fiestaflower
- Racemed Milkwort
- Racemose Phacelia
- Radish
- Raiche's Clarkia
- Railwaycreeper
- Rainbow cactus
- Rainbow Iris
- Rainier Pleated Gentian
- Rainier Violet
- Ram's Head Lady's Slipper
- Ramona Clarkia
- Ramonda
- Rampion
- Rancheria Clover
- Rangoon creeper
- Rare Loco Milkvetch
- Rareflower Heterocodon
- Rat tail cactus
- Rat Tail Orchid
- Rat-tail Nipple Cactus
- Rata
- Rattan's Beardtongue
- Rattan's Blue Eyed Mary
- Rattan's Milkvetch
- Rattan's Monkey-flower
- Rattan's Phacelia
- Rattan's Sandmat
- Rattlesnake Flower
- Raup's Fringedgentian
- Raup's Indian Paintbrush
- Ravine Cyanea
- Rayless Mock Goldenrod
- Rayless Sunflower
- Read's Pitcherplant
- Rebutia
- Recurved Milkvetch
- Red and green kangaroo paw
- Red Bartsia
- Red Besseya
- Red Bluet
- Red boronia
- Red buckeye
- Red Buckwheat
- Red bush monkeyflower
- Red campion
- Red cestrum
- Red columbine
- Red Creek Buckwheat
- Red Cyphomeris
- Red Desert Beardtongue
- Red Dome Blanketflower
- Red everlasting
- Red Fir Catchfly
- Red flowering gum
- Red ginger
- Red helleborine
- Red helmet orchid
- Red hemp-nettle
- Red Hoarypea
- Red horse chestnut
- Red hot poker
- Red ironbark
- Red jade vine
- Red jasmine
- Red Larkspur
- Red leschenaultia
- Red Lupine
- Red maids
- Red Milkweed
- Red Monardella
- Red Passion Flower
- Red pokers hakea
- Red powder puff
- Red prickly poppy
- Red ribbons
- Red Sand Spurrey
- Red Sand Verbena
- Red Sierra Onion
- Red Skinned Onion
- Red sorrel
- Red Spiderling
- Red Spot Clarkia
- Red star-thistle
- Red sun orchid
- Red Triangles
- Red Turtlehead
- Red valerian
- Red vanda
- Red water lily
- Red Windflower
- Red yucca
- Red-flower Onion
- Red-stem Waterwort
- Red-tipped Lousewort
- Red-veined Pie Plant
- Redflower Bird's-foot Trefoil
- Redheart
- Redpod Stonecrop
- Redpurple Beebalm
- Redray Alpinegold
- Redring Milkweed
- Redspine Fishhook Cactus
- Redspined Fishhook Cactus
- Redstem Stork's Bill
- Reduced Hybrid Violet
- Redvein Enkianthus
- Redwood Keckiella
- Redwood Lily
- Redwood Pea
- Rehder's Hybrid Pitcherplant
- Remarkable Goatsbeard
- Remarkable Hybrid Violet
- Remy's Cyanea
- Remy's Sandmat
- Renanthera
- Restharrow
- Reticulated iris
- Reveal's Buckwheat
- Reverchon's False Pennyroyal
- Reverchon's Spiderwort
- Rhiannon's Aster
- Rhizome Beardtongue
- Rhizome Fleabane
- Rhodohypoxis
- Rhodophiala
- Rhodora
- Rhubarb
- Ribbed False Pennyroyal
- Rice Button Aster
- Richardson's Beardtongue
- Richardson's geranium
- Richardson's Phlox
- Rickard's Milkvetch
- Ridge Rollandia
- Riggin's Penstemon
- Rigid Bird's Beak
- Rigid Indian Paintbrush
- Rigid Whitetop Aster
- Rimrock Milkvetch
- Rincon Mountain Rock Cress
- Rincon Ridge Ceanothus
- Ring bellflower
- Rio Grande Beebrush
- Rio Grande Clammyweed
- Rio Grande Fleabane
- Rio Grande Gilia
- Rio Grande Globe Amaranth
- Rio Grande Greenthread
- Rio Grande Leaf-flower
- Rio Grande Mock Vervain
- Rio Grande Phacelia
- Rio Grande Phlox
- Rio Grande Pricklypear
- Rio Grande Skullcap
- Rio Grande Stickpea
- Rio Grande Tumble-mustard
- Rio Grande Twintip
- Rio Grande Vervain
- Rio Grande Wild Petunia
- Ripley's Gilia
- Ripley's Milkvetch
- Ripley's Springparsley
- River Broom Rape
- Riverbank Lupine
- Riverbank Verbena
- Riverbar Bird's-foot Trefoil
- Riverside Spineflower
- Roadside Blue-eyed Grass
- Roald's Locoweed
- Robbins' Milkvetch
- Robbins' Phacelia
- Robert Geranium
- Robin's Plantain
- Robins' Bellflower
- Robinson's Hybrid Violet
- Robison's Monardella
- Robust Coyote Mint
- Robust Larkspur
- Rock Clematis
- Rock Creek Broom Rape
- Rock Fleabane
- Rock Hedgenettle
- Rock Indian Breadroot
- Rock isotome
- Rock Lupine
- Rock Monardella
- Rock Onion
- Rock Penstemon
- Rock purslane
- Rock rose
- Rock Sage
- Rock sea-lavender
- Rock soapwort
- Rock Toothwort
- Rock Violet
- Rock-portulaca
- Rockcastle Aster
- Rockcliff Isodendrion
- Rockcress
- Rocket larkspur
- Rockface Yellow Loosestrife
- Rockfringe
- Rockland Morning-glory
- Rocklands Spurge
- Rockloving Phacelia
- Rockmustard
- Rockslide Fleabane
- Rockslide Larkspur
- Rockvine Penstemon
- Rocky Ledge Penstemon
- Rocky Mountain Ankle-aster
- Rocky Mountain bee plant
- Rocky Mountain Blazing Star
- Rocky Mountain Blue Columbine
- Rocky Mountain Bluebells
- Rocky Mountain Clover
- Rocky Mountain Dwarf-primrose
- Rocky Mountain Fringed Gentian
- Rocky Mountain iris
- Rocky Mountain Jacob's-ladder
- Rocky Mountain Larkspur
- Rocky Mountain Lousewort
- Rocky Mountain penstemon
- Rocky Mountain Phacelia
- Rocky Mountain Phlox
- Rocky Mountain Pincushion-plant
- Rocky Mountain Pussytoes
- Rocky Mountain Rushy Milkvetch
- Rocky Mountain Spring Beauty
- Rocky Mountain Springparsley
- Rocky Mountain Thistle
- Rocoto
- Rod Wirelettuce
- Rodgersia
- Roemer's False Indigo
- Roezl's Gooseberry
- Rogue River Lupine
- Rohida
- Rollins Wild Ginger
- Rollins' Clover
- Rollins' Thelypody
- Romulea
- Roof Iris
- Roostertree
- Rooted Poppy
- Rosamond Woollystar
- Rosary Snoutbean
- Roscoea
- Rose acacia
- Rose Balm
- Rose Bluet
- Rose campion
- Rose Evening Primrose
- Rose Firecracker Flower
- Rose Globemallow
- Rose glorybower
- Rose mallow
- Rose Meadowsweet
- Rose of Plymouth
- Rose of Venezuela
- Rose pogonia
- Rose Rockcress
- Rose Sage
- Rose Thistle
- Rose Twisted-stalk
- Rose verbena
- Rose-rush
- Rose's Heartleaf
- Rose's Springparsley
- Rose's Ticktrefoil
- Rosebay Rhododendron
- Rosebud Orchid
- Roselle
- Rosemary Mint
- Rosendahl's Golden-saxifrage
- Roseroot Stonecrop
- Rosinweed Sunflower
- Ross' Pitcher Sage
- Ross' Sandwort
- Rosy Balsamroot
- Rosy Bird's-foot Trefoil
- Rosy Camphorweed
- Rosy Gilia
- Rosy Lupine
- Rosy Palafox
- Rosy Pussytoes
- Rosy trumpet tree
- Rothrock's Bush-beardtongue
- Rothrock's Fiddleleaf
- Rothrock's Hedgenettle
- Rothrock's Knapweed
- Rothrock's Thistle
- Rothrock's Townsend Daisy
- Rough Bellflower
- Rough blazing star
- Rough Brickellbush
- Rough False Foxglove
- Rough False Pennyroyal
- Rough Fleabane
- Rough Greeneyes
- Rough Hedgehyssop
- Rough Indian Paintbrush
- Rough poppy
- Roughleaf Aster
- Roughpod Bladderpod
- Round Copperleaf
- Round Headed Chinese Houses
- Round Leaved Filaree
- Round-fruited Hedge Hyssop
- Round-headed Leek
- Round-headed rampion
- Round-leaf Eyebright
- Round-leaf Four-o'clock
- Round-leaved fluellen
- Round-lobed Hepatica
- Round-stemmed False Foxglove
- Roundleaf Buckwheat
- Roundleaf Catchfly
- Roundleaf Dunebroom
- Roundleaf Leather-root
- Roundleaf Mudplantain
- Roundleaf Phacelia
- Roundtooth Ookow
- Royal bluebell
- Royal catchfly
- Royal Fleabane
- Royal Jacob's-ladder
- Royal Larkspur
- Royal Penstemon
- Royal Schiedea
- Royal Snoutbean
- Royal trumpet vine
- Ruby Chalice Clarkia
- Ruby Mountain Primrose
- Ruby Polygala
- Rudbeckia
- Rugel's False Pawpaw
- Rugel's Hoarypea
- Running Glade Clover
- Running postman
- Runyon's Beehive Cactus
- Runyon's Sunflower
- Runyon's Water-willow
- Runyon's Wild Petunia
- Rusby's Milkvetch
- Rusby's Primrose
- Rusby's Thistle
- Rush Broom
- Rush Lemonweed
- Rush Peteria
- Rush Pussytoes
- Rush Skeletonplant
- Rushleaf Eryngo
- Russeola Rock Cress
- Russet Hedgehog Cactus
- Russian comfrey
- Russian knapweed
- Rusty Lupine
- Rusty Menziesia
- Rustyleaf Cyanea
- Ruth's Little Brown Jug
- Ruth's Milkweed
- Rydberg's Fleabane
- Rydberg's Indian Breadroot
- Rydberg's Milkvetch
- Rydberg's Penstemon
- Rydberg's Thistle
- Rydberg's Verbena
- Ryon's Hybrid Violet
- Sacramento Mesamint
- Sacramento Mountain Indian Paintbrush
- Sacramento Mountain Thistle
- Sacramento Waxydogbane
- Sacred Thorn-apple
- Saddle Mountain Bitter Cress
- Safflower
- Sage-leaf Mullein
- Sagebrush Indian Paintbrush
- Sagebrush mariposa lily
- Sagebrush Phlox
- Sagebrush Violet
- Sainfoin
- Saints Fleabane
- Salad Hybrid Violet
- Saline Phlox
- Salish Fleabane
- Salmon Creek Indian Paintbrush
- Salmon River Fleabane
- Salmon River Locoweed
- Salmonberry
- Salsify
- Salt Gilia
- Salt Heliotrope
- Salt Marsh Bird's Beak
- Salt-spring Checkerbloom
- Saltmarsh False Foxglove
- Saltmarsh Fleabane
- Saltmarsh Morning-glory
- Salton Milkvetch
- San Anselmo Navarretia
- San Antonio Canyon Bedstraw
- San Antonio False Foxglove
- San Antonio Hills Monardella
- San Benito Evening Primrose
- San Benito Thorn-mint
- San Bernardino Aster
- San Bernardino Beardtongue
- San Bernardino Buckwheat
- San Bernardino Larkspur
- San Bernardino Mountain Gilia
- San Bernardino Mountain Monkeyflower
- San Bernardino Mountain Onion
- San Bernardino Mountains Dudleya
- San Bernardino Sun Cup
- San Bernardino Verbena
- San Carlos Buckwheat
- San Clemente Island Brodiaea
- San Clemente Island Bushmallow
- San Clemente Island Triteleia
- San Diego Barrelcactus
- San Diego Coastal Creeper
- San Diego Mesamint
- San Diego Milk Aster
- San Diego Pitchersage
- San Diego Thorn-mint
- San Diego Wild Cabbage
- San Felipe Dogweed
- San Francisco Bay Onion
- San Francisco Blue Eyed Mary
- San Francisco River Leather Petal
- San Gabriel Bluecup
- San Gabriel Linanthus
- San Gabriel Penstemon
- San Jacinto Beardtongue
- San Jacinto Bedstraw
- San Jacinto Bluecurls
- San Jacinto Lupine
- San Joaquin Blazing Star
- San Joaquin Bluecurls
- San Juan Gilia
- San Juan Milkvetch
- San Luis Lupine
- San Luis Mariposa Lily
- San Luis Mountain Ipomopsis
- San Luis Obispo Coyote Mint
- San Luis Obispo Dudleya
- San Luis Obispo Monardella
- San Luis Obispo Serpentine Dudleya
- San Luis Obispo Spineflower
- San Mateo Thorn-mint
- San Mateo Tree Lupine
- San Miguel Calamint
- San Miguel Island Buckwheat
- San Obispo Milkvetch
- San Patricio Tansyaster
- San Pedro False Prairie-clover
- San Pedro River Broomspurge
- San Pedro Ticktrefoil
- San Rafael Milkvetch
- San Saba Pinweed
- Sand Brazos-mint
- Sand Buck Brush
- Sand crocus
- Sand Dune Rock Cress
- Sand Fleabane
- Sand Fringepod
- Sand Gilia
- Sand Hedgenettle
- Sand Lupine
- Sand Palafox
- Sand Phacelia
- Sand Phlox
- Sand Plain Dwarf Morning-glory
- Sand Ticktrefoil
- Sand Violet
- Sand-Dune Penstemon
- Sand-dune Wallflower
- Sandblossoms
- Sanddune Ipomopsis
- Sanddune Linanthus
- Sandfood
- Sandhill Shinypod
- Sandhill Thistle
- Sandhills Heartleaf
- Sandhills Lily
- Sandhills Milkvetch
- Sandia Mountain Alumroot
- Sandpaper Vervain
- Sandstone Milkvetch
- Sandyland Blue-eyed Grass
- Sandyland bluebonnet
- Sandywoods Chaffhead
- Sanguine Purple Coneflower
- Santa Ana Pitchersage
- Santa Barbara Ceanothus
- Santa Barbara Milkvetch
- Santa Barbara Spineflower
- Santa Catalina Figwort
- Santa Catalina Indian Paintbrush
- Santa Catalina Island Desert Thorn
- Santa Catalina Island Monkey-flower
- Santa Catalina Mariposa Lily
- Santa Catalina Mountain Sage
- Santa Clara County Lessingia
- Santa Cruz Island Rock Cress
- Santa Cruz Island Ticktrefoil
- Santa Cruz Mountains Beardtongue
- Santa Fe Milkvetch
- Santa Fe Phlox
- Santa Lucia Lupine
- Santa Lucia Mint
- Santa Lucia Phacelia
- Santa Monica Live Forever
- Santa Rita Claret-cup Cactus
- Santa Rita Mountain Bean
- Santa Rita Mountain Ticktrefoil
- Santa Rosa Basalt Brodiaea
- Santa Rosa Island Sage
- Santa Susana Bush Monkeyflower
- Sapello Canyon Larkspur
- Sapphire tower
- Sapphire Woollystar
- Sargent's Campion
- Sasanqua camellia
- Satiny Milkvetch
- Saucer magnolia
- Sausage tree
- Saussurea
- Savanna Aster
- Savanna Blazing-star
- Savanna Iris
- Savannah False Pimpernel
- Saw Phacelia
- Saw-leaved Speedwell
- Saw-sepal Penstemon
- Saw-wort
- Sawleaf Bush Beardtongue
- Sawtooth Sage
- Saxifrage
- Sayersville Blue-Eyes
- Scale-leaf Aster
- Scalloped Milkwort
- Scaly Blazing Star
- Scamman's Claytonia
- Scamman's Oxytrope
- Scapose Torrey's Milkvetch
- Scarborough lily
- Scarlet banana
- Scarlet banksia
- Scarlet bee balm
- Scarlet bouvardia
- Scarlet Buckwheat
- Scarlet bugler
- Scarlet calamint
- Scarlet Cinquefoil
- Scarlet clematis
- Scarlet Creeper
- Scarlet flax
- Scarlet Four O'Clock
- Scarlet fritillary
- Scarlet gaura
- Scarlet gilia
- Scarlet globemallow
- Scarlet honey myrtle
- Scarlet Keckiella
- Scarlet Ladies'-tresses
- Scarlet larkspur
- Scarlet leadwort
- Scarlet milkvetch
- Scarlet monkeyflower
- Scarlet morning glory
- Scarlet muskflower
- Scarlet paintbrush
- Scarlet pea
- Scarlet rose mallow
- Scarlet runner bean
- Scarlet sage
- Scarlet Spiral-ginger
- Scarlet Star
- Scarlet trumpet honeysuckle
- Scarlet vetch
- Scented Shooting Star
- Scepterbearing Fleabane
- Schied's Snakeherb
- Schisandra
- Schizanthus
- Schott's Calico
- Schott's Dalea
- Schott's Wirelettuce
- Scorpion Milkvetch
- Scotch thistle
- Scott Mountain Phacelia
- Scott Valley Phacelia
- Scott's Clematis
- Scottish primrose
- Scouler's Catchfly
- Scouler's Fumewort
- Scrub Balm
- Scrub Blue-eyed Grass
- Scrub Gilia
- Scurf Hoarypea
- Sea aster
- Sea Hibiscus
- Sea purslane
- Sea rocket
- Sea stock
- Searls' Prairie Clover
- Seashore Lupine
- Seaside Bird's Beak
- Seaside Bird's-foot Trefoil
- Seaside Calandrinia
- Seaside Fleabane
- Seaside Petunia
- Secund Jewelflower
- Seeman's Sunbonnets
- Sego Lily
- Selby's Rock Cress
- Self-heal
- Selkirk's Violet
- Semaphore Pricklypear
- Sensitive plant
- Serbian bellflower
- Serpentine Bird's Beak
- Serpentine Catchfly
- Serpentine Collomia
- Serpentine Erigeron
- Serpentine Linanthus
- Serpentine Milkweed
- Serpentine Monardella
- Serpentine Monkey-flower
- Serrulate Penstemon
- Sesame
- Sessile-leaf Pinelandcress
- Sessileleaf Cyanea
- Sessileleaf Ticktrefoil
- Sevier Milkvetch
- Sevier Plateau Beardtongue
- Sexton Mountain Mariposa Lily
- Shade Bluebells
- Shaggy Blazing Star
- Shaggy Dwarf Morning-glory
- Shaggy Fleabane
- Shaggy Hedgehyssop
- Shaggy Lupine
- Shaggy Milkvetch
- Shaggyhair Lupine
- Shampoo ginger
- Shamrock pea
- Sharktail Cyanea
- Sharp Blazing Star
- Sharp-lobed hepatica
- Sharp-winged monkeyflower
- Sharpkeel Milkvetch
- Sharsmith's Onion
- Sharsmith's Stickseed
- Shasta Clover
- Shasta Lily
- Shasta Owl's Clover
- Sheep Laurel
- Sheep Milkvetch
- Sheep's bit
- Shelton's Monardella
- Shelton's Violet
- Sherman Hoyt Woolstar
- Shieldplant
- Shining Aster
- Shining False Indigo
- Shining Fleabane
- Shiny Blueberry
- Shinyleaf Currant
- Shirley Meadows Mariposa Lily
- Shiso
- Shockley's Evening-primrose
- Shockley's Milkvetch
- Shockley's Rock Cress
- Shoebutton
- Short Bracted Bird's Beak
- Short Lupine
- Short Style Owl's Clover
- Short-lobe Beardtongue
- Short-lobe Indian Paintbrush
- Short-stalked Catmint
- Short's aster
- Short's Hedge Hyssop
- Short's Milkvetch
- Shortleaf Blazing Star
- Shortleaf Lobelia
- Shortlobe Phacelia
- Shortspike Hedgenettle
- Shortstem Beardtongue
- Shortstem Lupine
- Shortstyle Bluebells
- Shoshone Beardtongue
- Showy Alpine Forget-me-not
- Showy aster
- Showy Blue Lettuce
- Showy Coneflower
- Showy False Dragonhead
- Showy Gentian
- Showy Gilia
- Showy Greenbright
- Showy Indian Clover
- Showy Jacob's Ladder
- Showy Locoweed
- Showy milkweed
- Showy Milkwort
- Showy Northwestern Indian-paintbrush
- Showy orchis
- Showy penstemon
- Showy Phlox
- Showy Skullcap
- Showy Tick Trefoil
- Shredding Evening Primrose
- Shrimp plant
- Shriver's Purple Fringed Orchid
- Shrub Lespedeza
- Shrub Verbena
- Shrubby Blue Sage
- Shrubby Brickellbush
- Shrubby cinquefoil
- Shrubby Ice Plant
- Shrubby Lespedeza
- Shrubby Milkwort
- Shrubby Penstemon
- Shrubby Primrose-willow
- Shy Gilia
- Shyleaf
- Siam tulip
- Siberian larkspur
- Siberian lily
- Siberian Motherwort
- Siberian Phlox
- Siberian Primrose
- Siberian squill
- Sickle Fruit Jewel Flower
- Sicklekeel Lupine
- Sicklepod Rockcress
- Sidebells Penstemon
- Sieber's crocus
- Sierra Ancha Fleabane
- Sierra Baby Blue Eyes
- Sierra Beardtongue
- Sierra Blanca Ankle-aster
- Sierra Bluecup
- Sierra Calicoflower
- Sierra Clarkia
- Sierra Corydalis
- Sierra Fringed Gentian
- Sierra Gooseberry
- Sierra Larkspur
- Sierra Lessingia
- Sierra Lupine
- Sierra Madre Larkspur
- Sierra Madre Lobelia
- Sierra Mint
- Sierra Pea
- Sierra Primrose
- Sierra Shooting Star
- Sierra Skullcap
- Sierra Snapdragon
- Sierra Stickseed
- Sierra Sun Cup
- Sierra Threadplant
- Sierra Woolly Indian Paintbrush
- Siler's Beardtongue
- Silky Aster
- Silky Beach Pea
- Silky Deerweed
- Silky Lupine
- Silky Milkvetch
- Silky Morning-glory
- Silky Phacelia
- Silky Prairie Clover
- Silky wisteria
- Silver Cudweed
- Silver Fleabane
- Silver Lupine
- Silver Prairie Clover
- Silver Speedwell
- Silver Spoons
- Silver Spurflower
- Silver's Milkvetch
- Silverleaf Milkvetch
- Silverleaf nightshade
- Silverleaf Phacelia
- Silverleaf Scurfpea
- Silversword
- Silvery lupine
- Silvery Primrose
- Simmonds' Aster
- Simpleleaf Ticktrefoil
- Singapore orchid
- Singlestem Leather-root
- Sinningia
- Siskiyou Aster
- Siskiyou Bluecurls
- Siskiyou Checkerbloom
- Siskiyou Clover
- Siskiyou Fireweed
- Siskiyou Fleabane
- Siskiyou Fritillary
- Siskiyou Indian Paintbrush
- Siskiyou Iris
- Siskiyou Mariposa Lily
- Siskiyou Monardella
- Siskiyou Mountain Owl-clover
- Siskiyou Penstemon
- Siskiyou Phacelia
- Sivinsk's Erigeron
- Sixangle Foldwing
- Sixweeks Prairie Clover
- Skeleton-leaf Willow
- Skeletonplant
- Skiff Milkvetch
- Skinner's False Foxglove
- Skirt Milkweed
- Skullcap
- Skunk cabbage
- Skunk Plant
- Skunktop
- Sky blue aster
- Sky lupine
- Sky pilot
- Sky-blue Lupine
- Skyblue Clustervine
- Skyblue Phacelia
- Skyflower
- Slavin's Hybrid Violet
- Slender Aster
- Slender Beardtongue
- Slender Bird's Beak
- Slender Blazing Star
- Slender Blue Iris
- Slender Dwarf Morning-glory
- Slender Fleabane
- Slender Milkvetch
- Slender Poreleaf
- Slender Rushpea
- Slender Seapurslane
- Slender Spiderling
- Slender Tansyaster
- Slender Threadplant
- Slender Toothwort
- Slender Trillium
- Slender Wild Cabbage
- Slender-petal Thelypody
- Slenderleaf False Foxglove
- Slenderleaf Fleabane
- Slenderleaf Sage
- Slenderleaf Skyrocket
- Slenderstalk Monkeyflower
- Slenderstem Lessingia
- Slendertube Skyrocket
- Slickseed Fuzzybean
- Slim Larkspur
- Slimflower Scurfpea
- Slimjim Bean
- Slimleaf Bean
- Slimleaf Plainsmustard
- Slimleaf Prairie Clover
- Slimpod Milkweed
- Slimpod Venus' Looking-glass
- Slimseed Sandmat
- Slimstalk Spiderling
- Slough Thistle
- Small Baby Blue Eyes
- Small Ball Moss
- Small Beardtongue
- Small Bluebells
- Small Butterwort
- Small Coastal Germander
- Small Eyebright
- Small Globe Thistle
- Small Groundcone
- Small Indian Breadroot
- Small Onion
- Small Palafox
- Small Phacelia
- Small scabious
- Small Skullcap
- Small Spreading Pogonia
- Small Twistedstalk
- Small Venus' Looking-glass
- Small Waterwort
- Small-flower Lousewort
- Small-Flowered Tonella
- Small-leaf Fiddleleaf
- Small-leaf Milkpea
- Small-lobe Navarretia
- Small's Milkpea
- Small's Penstemon
- Small's Skullcap
- Small's Southern Clarkia
- Smallflower Bluecurls
- Smallflower Clermontia
- Smallflower Columbine
- Smallflower False Foxglove
- Smallflower Fishhook Cactus
- Smallflower Globemallow
- Smallflower Groundcherry
- Smallflower Indian Paintbrush
- Smallflower Lupine
- Smallflower Milkvine
- Smallflower Miterwort
- Smallflower Monkeyflower
- Smallflower Nemophila
- Smallflower Pawpaw
- Smallflower Phacelia
- Smallflower Phyllostegia
- Smallflower Tansyaster
- Smallflower Threadplant
- Smallflower Western Rosinweed
- Smallflower Wrightwort
- Smallflowered Anemone
- Smallhead Blazing Star
- Smallhead Doll's Daisy
- Smallhead Sneezeweed
- Smallleaf Giant Hyssop
- Smallseed Sandmat
- Smartweed
- Smartweed Leaf-flower
- Smoketree
- Smoky Mariposa
- Smooth Alder
- Smooth Aster
- Smooth Ayenia
- Smooth Cyanea
- Smooth False Indigo
- Smooth Fleabane
- Smooth Hedgenettle
- Smooth Hydrangea
- Smooth Jewelflower
- Smooth Mountain Mahogany
- Smooth Northern Rock Cress
- Smooth Penstemon
- Smooth Phacelia
- Smooth Phlox
- Smooth Purple Coneflower
- Smooth Rock Skullcap
- Smooth Small-leaf Ticktrefoil
- Smooth Spreading Four O'Clock
- Smooth Ticktrefoil
- Smooth Townsend Daisy
- Smooth Violet Prairie Aster
- Smooth Woodmint
- Smoothleaf Beardtongue
- Smoothpod Hoarypea
- Snail vine
- Snake Milkvetch
- Snake River Milkvetch
- Snake River Phlox
- Snakeherb
- Snapdragon Vine
- Snoutbean
- Snow Buckwheat
- Snow crocus
- Snow Gentian
- Snow Indian Paintbrush
- Snow Mountain Buckwheat
- Snow Mountain Penstemon
- Snow Mountain Willowherb
- Snow plant
- Snow-White Everlasting
- Snowqueen
- Snowy Thistle
- Soapwort
- Soapwort gentian
- Sobralia
- Society garlic
- Socrates Mine Jewel Flower
- Sodaville Milkvetch
- Soft Aster
- Soft Lupine
- Soft Milkpea
- Soft Phacelia
- Soft Prairie Clover
- Softhair False Pennyroyal
- Softseed Wild Petunia
- Solano False Bindweed
- Soldanella
- Soldier Rock Cress
- Solitary Clematis
- Sonoma Beardtongue
- Sonoma Buck Brush
- Sonoma Clarkia
- Sonoma Lessingia
- Sonoma Spineflower
- Sonora Lupine
- Sonoran Bean
- Sonoran Beardtongue
- Sonoran Bird's-foot Trefoil
- Sonoran Brickellbush
- Sonoran False Prairie-clover
- Sonoran Giant Hyssop
- Sonoran Prairie Clover
- Sonoran Slender Thoroughwort
- Sonoran Water-willow
- Sophora
- Sorrel
- Sorrel Buckwheat
- South African sage wood
- South Idaho Beardtongue
- South Texas Blanketflower
- South Texas Prairie Clover
- South Texas Sand Phacelia
- Southern Annual Saltmarsh Aster
- Southern Appalachian Purple Pitcherplant
- Southern Barbara's Buttons
- Southern blue flag
- Southern blue monkshood
- Southern Butterwort
- Southern Coastal Violet
- Southern Frogfruit
- Southern Gilia
- Southern harebell
- Southern Island Phacelia
- Southern Jewel Flower
- Southern Lady's-slipper
- Southern Lobelia
- Southern marsh-orchid
- Southern Meadow-rue
- Southern Monardella
- Southern Mountain Cranberry
- Southern Mountainmint
- Southern Prairie Aster
- Southern Purple Pitcherplant
- Southern Sierra Phacelia
- Southern Swamp Aster
- Southern Twayblade
- Southern Woodland Violet
- Southwestern Brickellbush
- Southwestern Cosmos
- Southwestern Gilia
- Southwestern Mock Vervain
- Southwestern Penstemon
- Southwestern Pleatleaf
- Soybean
- Spalding's Milkvetch
- Spanish flag
- Spanish iris
- Spanish Needle Onion
- Sparseflower Jewelflower
- Spathoglottis
- Spear Globemallow
- Spearbract Blue-eyed Grass
- Spearleaf Brickellbush
- Spearmint
- Spearshaped Phacelia
- Speckled Clarkia
- Sperry's Milkweed
- Spice Bush
- Spider Lupine
- Spiderleaf
- Spiderling
- Spiked Broomrape
- Spiked Crested Coralroot
- Spiked Hoarypea
- Spiked Larkspur
- Spiked speedwell
- Spiked Ticktrefoil
- Spineflower
- Spinster's Blue Eyed Mary
- Spiny False Fameflower
- Spiny False Fiddleleaf
- Spiny Milkvetch
- Spiny Milkwort
- Spiny Phlox
- Spinystar
- Spinytooth Clover
- Spirea
- Splendid Mariposa Lily
- Splendid Woodland Gilia
- Split Hair Indian Paintbrush
- Splitleaf Brickellbush
- Splitleaf Cyanea
- Splitleaf Gilia
- Spoonleaf
- Spoonleaf Cyanea
- Spoonleaf Purple Everlasting
- Spoonleaf Rock Cress
- Spotless Balm
- Spotted Bean
- Spotted beebalm
- Spotted Bellflower
- Spotted coralroot
- Spotted deadnettle
- Spotted Evening-primrose
- Spotted Fritillary
- Spotted Hideseed
- Spotted Joe-Pye weed
- Spotted knapweed
- Spotted Lady's Slipper
- Spotted Lupine
- Spotted Phacelia
- Spotted Stickseed
- Spotted Wakerobin
- Sprawling Hoarypea
- Sprawling Schiedea
- Spreading Aster
- Spreading bellflower
- Spreading Buckwheat
- Spreading Eryngo
- Spreading False Pennyroyal
- Spreading False Prairie-clover
- Spreading Fleabane
- Spreading Gooseberry
- Spreading Groundsmoke
- Spreading Jacob's ladder
- Spreading Phlox
- Spreading Schiedea
- Spreading Snakeherb
- Spreading Stickseed
- Spreadingpod Rockcress
- Spring Coral-root
- Spring gentian
- Spring Lessingia
- Spring Mountain Ankle-aster
- Spring Mountain Milkvetch
- Spring Obedient Plant
- Spring Phacelia
- Spring Speedwell
- Spring squill
- Spring starflower
- Spring Thistle
- Spring vetchling
- Springparsley
- Springville Clarkia
- Spruce-fir Fleabane
- Spuria iris
- Spurred Butterfly Pea
- Spurred Snapdragon
- St Dabeoc's heath
- St. Francis Cabbage
- St. John's Rollandia
- Staghorn Cholla
- Staining Collomia
- Stalked Fleabane
- Stalked Milkweed
- Stalked Wild Petunia
- Stalkflower
- Stalkpod Locoweed
- Standing cypress
- Stanhopea
- Stanislaus Monkeyflower
- Stapelia
- Star Brodiaea
- Star Cactus
- Star Gilia
- Star Milkvine
- Star of Persia
- Starveling Milkvetch
- Starviolet
- Stebbins' Bitter-root
- Stebbins' Phacelia
- Steele's Eupatorium
- Steen Mountain Thistle
- Steens Indian Paintbrush
- Steens Mountain Cushion Buckwheat
- Steeplebush
- Stellar Hau Kuahiwi
- Stemless Beardtongue
- Stemless Dwarf Lupine
- Stemless Spiderwort
- Stenogyne
- Stephanomeria
- Stephens' Beardtongue
- Steptoe Valley Beardtongue
- Stevens' Fiddleleaf
- Stewart's Gilia
- Stickseed
- Sticky Blue-Eyed Mary
- Sticky Bush-monkey-flower
- Sticky catchfly
- Sticky Centaury
- Sticky Chinese Houses
- Sticky Currant
- Sticky Fagonbush
- Sticky False Gilyflower
- Sticky geranium
- Sticky Germander
- Sticky Gilia
- Sticky Indian Paintbrush
- Sticky Jointvetch
- Sticky Pincushionplant
- Sticky Saw-wort
- Sticky Skullcap
- Sticky Tall Fleabane
- Sticky-Stem Penstemon
- Stiff aster
- Stiff Blue-eyed Grass
- Stiff Bluestar
- Stiff Bottlebrush
- Stiff Branched Stephanomeria
- Stiff Gentian
- Stiff Pea
- Stiff Phlox
- Stiff Willowherb
- Stiff-leaf Beardtongue
- Stiffleaf False Foxglove
- Stiffstem Flax
- Stinging Annual Lupine
- Stinkbells
- Stinking iris
- Stokes' aster
- Stone Mountainmint
- Stonecrop
- Stonecrop Gilia
- Stonecrop Phacelia
- Stony-Ground Lupine
- Storksbill
- Stout Phacelia
- Stoutstem Threadplant
- Straggly Gooseberry
- Straightbeak Buttercup
- Strawberry Cactus
- Strawberry hedgehog
- Strawflower
- Stream Bogmoss
- Stream Orchid
- Stream-bed Cyanea
- Streambank Bird's-foot Trefoil
- Streambank Cyanea
- Streambank Globe-mallow
- Streambank Lupine
- Streamside Fleabane
- Strict Blue-eyed Grass
- Strigose Bird's-foot Trefoil
- String of hearts
- Striped Abobe Lily
- Striped Coralroot
- Striped Cream Violet
- Striped Garlic
- Striped Gentian
- Striped Rosemallow
- Striped squill
- Sturt's desert pea
- Sturt's desert rose
- Subalpine Aster
- Subalpine Eyebright
- Subalpine Fleabane
- Subalpine Larkspur
- Subalpine Lupine
- Subalpine Mariposa Lily
- Subterranean Indian Breadroot
- Sudetic Lousewort
- Sugarstick
- Suisun Marsh Aster
- Suisun Thistle
- Suksdorf Woodsorrel
- Suksdorf's Indian Paintbrush
- Suksdorf's Lupine
- Suksdorf's Milkvetch
- Suksdorf's Monkeyflower
- Sullivan City Flax
- Sullivant's Milkweed
- Sulphur Penstemon
- Sulphur-flower Buckwheat
- Summer Gayfeather
- Summer Lupine
- Summer savory
- Summit Lupine
- Sun orchid
- Sun Spurge
- Sunnyside Frasera
- Sunset Crater Penstemon
- Sunset Huskmallow
- Sunset Lupine
- Superb penstemon
- Supine Bean
- Susanville Beardtongue
- Susanville Milkvetch
- Sutherland's Larkspur
- Swamp Aster
- Swamp Bellflower
- Swamp daisy
- Swamp Gentian
- Swamp Larkspur
- Swamp leather flower
- Swamp Loosestrife
- Swamp milkweed
- Swamp Milkwort
- Swamp Morning-glory
- Swamp Pink
- Swamp rose mallow
- Swamp Snakeherb
- Swamp thistle
- Swampforest Clermontia
- Swan River daisy
- Swanflower
- Sweet Betsy
- Sweet Coneflower
- Sweet Four O'Clock
- Sweet Joe-Pye weed
- Sweet pea bush
- Sweet pea shrub
- Sweet Pinesap
- Sweet pitcher plant
- Sweet potato
- Sweet scabious
- Sweet sultan
- Sweet Trillium
- Sweet violet
- Sweet White Violet
- Sweet-smelling Monardella
- Sweetclover Vetch
- Sweetscented Phacelia
- Sweetscented Pigeonwings
- Sweetvetch
- Swertia
- Swollen Penstemon
- Swordleaf Blue-eyed Grass
- Swordleaf Phlox
- Synandrospadix
- Tacky Phacelia
- Tagimaucia
- Tahitian Kidneywood
- Tahoka daisy
- Tailcup Lupine
- Taimyr Campion
- Taiwan cherry
- Tall bellflower
- Tall Blue Lettuce
- Tall bluebells
- Tall Buckwheat
- Tall bush-clover
- Tall Elephant's-foot
- Tall Fleabane
- Tall Fringed Bluebells
- Tall ironweed
- Tall Jacob's-ladder
- Tall Ladies'-tresses
- Tall larkspur
- Tall Meadow Larkspur
- Tall Mountain Larkspur
- Tall Poppymallow
- Tall Silky Lupine
- Tall Silverbush
- Tall Spiny Milkvetch
- Tall Stephanomeria
- Tall Thimbleweed
- Tall thistle
- Tall Townsend Daisy
- Talus Collomia
- Talus Fritillary
- Tampa Butterfly Orchid
- Tangier pea
- Tansyaster
- Taper-Leaved Penstemon
- Tapertip Onion
- Tapertip Wakerobin
- Tassel flower
- Tassel hyacinth
- Tatarian aster
- Teabush
- Teasel
- Tecoma
- Tecopa Bird's Beak
- Tehachapi Woollystar
- Tehama Pincushionplant
- Tehipite Valley Jewel Flower
- Telephus Spurge
- Telescope Peak Buckwheat
- Temblor Range Clarkia
- Temple bells
- Tenleaf Woodsorrel
- Tennessee coneflower
- Tennessee Gladecress
- Tennessee Ironweed
- Tenpetal Anemone
- Tepary Bean
- Terlingua Sandmat
- Teton Lupine
- Texan Horsenettle
- Texan Phacelia
- Texas Baby Blue Eyes
- Texas Bergia
- Texas betony
- Texas Bindweed
- Texas Bluestar
- Texas Burstwort
- Texas Crested Coralroot
- Texas Cupflower
- Texas Desert-rue
- Texas Desert-thorn
- Texas Dutchman's Pipe
- Texas False Garlic
- Texas Frogfruit
- Texas Gayfeather
- Texas Geranium
- Texas lantana
- Texas Lespedeza
- Texas Lignum-vitae
- Texas Milkpea
- Texas mountain laurel
- Texas Nightshade
- Texas paintbrush
- Texas Palafox
- Texas Plains Indian Breadroot
- Texas Poppymallow
- Texas Prickly Pear
- Texas Redbud
- Texas sage
- Texas Sandmint
- Texas Seapurslane
- Texas Silverpuff
- Texas Skeleton Plant
- Texas Skullcap
- Texas Spiderwort
- Texas Stork's Bill
- Texas Thistle
- Texas toadflax
- Texas Townsend Daisy
- Texas Venus' Looking-glass
- Texas Vervain
- Texas Western Daisy
- Texasfan
- Thai basil
- Thalia
- Tharp's Phlox
- Tharp's Spiderwort
- The Cedars Buckwheat
- Thelypody
- Thicket Bean
- Thicket Globemallow
- Thickleaf Monardella
- Thickleaf Penstemon
- Thickleaf Water-willow
- Thickleaf Yerba Santa
- Thickpod Milkvetch
- Thickstem Aster
- Thickstem Wild Cabbage
- Thieret's Skullcap
- Thin-leaf Late Purple Aster
- Thin-leaf Owlclover
- Thin-petal Larkspur
- Thinleaf Mountainmint
- Thinleaf Pea
- Thinsepal Monkeyflower
- Thistle Cholla
- Thistle Sage
- Thompson's Clover
- Thompson's Dalea
- Thompson's Iris
- Thompson's Penstemon
- Thompson's Peteria
- Thompson's Rock Cress
- Thompson's Waterleaf
- Thorn Skeletonweed
- Thread Linanthus
- Thread-leaved Brodiaea
- Threadleaf Fleabane
- Threadleaf Giant Hyssop
- Threadleaf Penstemon
- Threadleaf Phacelia
- Threadleaf Phlox
- Threadleaf Sundew
- Threadplant
- Threadstalk Milkvetch
- Threadstem Pincushionplant
- Threadstem Sandmat
- Three Bracted Onion
- Three Lobed Oxytheca
- Three Peaks Jewel Flower
- Three-lobe Violet
- Three-nerve Fleabane
- Threehearts
- Thrift
- Throatwort
- Thunbergia
- Thurber's Buckwheat
- Thurber's Desert Honeysuckle
- Thurber's Desertpeony
- Thurber's Hoarypea
- Thurber's Milkvetch
- Thurber's Penstemon
- Thurber's Stemsucker
- Thurber's Wirelettuce
- Thyme-leaf Pinweed
- Thymeleaf Bluet
- Thymeleaf Mesamint
- Thymeleaf Sandmat
- Thymeleaf Speedwell
- Tiburon Jewel Flower
- Tick trefoil
- Tidestrom Beardtongue
- Tidestrom's Lupine
- Tidestrom's Milkvetch
- Tie dye surprise lily
- Tiehm's Milkvetch
- Tievine
- Tiger Beardtongue
- Tiger flower
- Tigna Potato
- Timber Milkvetch
- Timberline Beardtongue
- Tiny Bluets
- Tiny Pea
- Tiny Pentachaeta
- Tiny Trumpet
- Tinytooter Monkeyflower
- Tioga Gentian
- To-tsubaki
- Toad lily
- Toadflax
- Toadflax Penstemon
- Toadshade
- Toano Milkvetch
- Tobacco
- Todsen's False Pennyroyal
- Toiyabe Buckwheat
- Toiyabe Springparsley
- Tolmie Star-tulip
- Tolmie's Owl's Clover
- Tolmie's Penstemon
- Tomcat Clover
- Tommasini's crocus
- Tongue orchid
- Tonopah Milkvetch
- Tonto Basin Century Plant
- Toothed Calicoflower
- Toothed Onion
- Toothwort
- Topeka Purple Coneflower
- Toquima Milkvetch
- Torch cactus
- Torch ginger
- Torrey Wolfberry
- Torrey Yucca
- Torrey's Blue Eyed Mary
- Torrey's Milkvetch
- Torrey's Monkeyflower
- Torrey's Mountainmint
- Torrey's Pea
- Torrey's Penstemon
- Torrey's Tievine
- Torrey's Wrightwort
- Toughleaf Iris
- Tower Delphinium
- Tower of jewels
- Towering Jacob's-ladder
- Tracy's Clarkia
- Tracy's Collomia
- Tracy's Lupine
- Tracy's Thistle
- Trailing bellflower
- Trailing Black Currant
- Trailing Buckbrush
- Trailing Four O'clock
- Trailing Fuzzybean
- Trailing Krameria
- Trailing Lantana
- Trailing Lespedeza
- Trailing Phlox
- Trailing Snapdragon
- Trailing Wakerobin
- Trans-pecos Ayenia
- Trans-pecos Giant Hyssop
- Trans-Pecos Scarlet Hedgehog Cactus
- Trans-Pecos Spiderwort
- Trans-Pecos Tansyaster
- Trans-pecos Wrightwort
- Transmontane Gilia
- Transparent Milkvetch
- Transpecos Morning-glory
- Transpecos Sealavender
- Transverse Range Phacelia
- Trapper's Gentian
- Tree Cholla
- Tree echium
- Tree Germander
- Tree lupin
- Tree mallow
- Tree rhododendron
- Tree wisteria
- Trelease's Hybrid Willowherb
- Trelease's larkspur
- Tricolor Monkeyflower
- Tricolored Indian cress
- Trident red maple
- Trinidad Milkvetch
- Trinity Buckwheat
- Trinity Mountain Rock Cress
- Tripleleaf Morning-glory
- Triteleia
- Tritonia
- Trochetia
- Tropical Govenia
- Tropical Milkwort
- Tropical Royalblue Waterlily
- Tropical sage
- Tropical Water Lily
- Troubled Milkvetch
- Trout Creek Milkvetch
- True Babystars
- Trumpet gentian
- Trumpet Gooseberry
- Trumpet honeysuckle
- Trumpet Lungwort
- Tubeflower Bluecup
- Tuberous begonia
- Tubular Bluestar
- Tucson Pricklypear
- Tufted Alum-root
- Tufted Flax
- Tufted Fleabane
- Tufted Frasera
- Tufted Geranium
- Tufted Milkvetch
- Tufted Milkweed
- Tufted Phlox
- Tufted Vetch
- Tufted Yellow Woodsorrel
- Tulip Prickly Pear
- Tundra Aster
- Tundra Chickweed
- Tundra Fleabane
- Tunnel Springs Beardtongue
- Turgid Blazing-star
- Turk's cap
- Turk's cap lily
- Turkish Rugging
- Turner's Water-willow
- Turniproot
- Turpentine Weed
- Turpentinebroom
- Turquoise puya
- Turtlehead
- Tushar Indian Paintbrush
- Tushar Range Beardtongue
- Twayblade
- Tweedia
- Tweedy's Fleabane
- Tweedy's Gila
- Tweedy's Snowlover
- Twin Clover
- Twinberry Honeysuckle
- Twincrest Onion
- Twinevine
- Twinflower
- Twining Screwstem
- Twisted Airplant
- Two Carpellate Western Flax
- Two Lobed Clarkia
- Two Lobed Spineflower
- Two-grooved Milkvetch
- Two-leaf Penstemon
- Twocolor Phacelia
- Twoflower Hybrid Violet
- Twoflower Stickpea
- Twotooth Buckwheat
- Uhiuhi
- Uinta Basin Gilia
- Uinta Clover
- Uinta Fleabane
- Uinta Mountain Fleabane
- Uinta Mountain Penstemon
- Ulihi Phyllostegia
- Umbel Bitter Cress
- Umbrella Larkspur
- Unarmed Buckwheat
- Unexpected Larkspur
- Unusual Hybrid Violet
- Upland Beardtongue
- Upland Boneset
- Upland Cotton
- Upright Blue Penstemon
- Urceolina
- Urn Plant
- Urn-flowered Alum-root
- Ursinia
- Utah Bird's-foot Trefoil
- Utah Columbine
- Utah Fleabane
- Utah Lupine
- Utah Milkvetch
- Utah Monkeyflower
- Utah Pea
- Utah Penstemon
- Utah Phacelia
- Utah Small Camas
- Utah Violet
- Vail Lake Buck Brush
- Valley Lupine
- Valley Redstem
- Valley Schiedea
- Valley Violet
- Van Houtte's Columbine
- Van Royen Pohe Hiwa
- Vanbrunt's Polemonium
- Vancouver Thistle
- Vanillaleaf
- Variable Bean
- Variable Linanthus
- Variable Starviolet
- Variable-color Beardtongue
- Variable-leaf Heartleaf
- Variable-leaf Jewelflower
- Variable-leaved Sea Holly
- Variableleaf Indian Plantain
- Varileaf Phacelia
- Vasek's Clarkia
- Vasey's Thistle
- Veined Yellow Loosestrife
- Veiny Brickellbush
- Veiny False Pennyroyal
- Veiny Monardella
- Veiny pea
- Veiny Skullcap
- Veltheimia
- Velvet bean
- Velvet Lupine
- Velvet Stickseed
- Velvetleaf Ticktrefoil
- Velvetpod Mimosa
- Velvetseed Milkwort
- Venus Penstemon
- Venus's looking-glass
- Verbascum
- Verde Formation Breadroot
- Vermejo Phlox
- Vermont Hybrid Violet
- Vernalpool Brodiaea
- Veronicaleaf Brickellbush
- Victoria's Owl-clover
- Victorin's Gentian
- Viereck's Winged Rock Cress
- Vietnamese balm
- Villous False Candytuft
- Vine Hill Clarkia
- Vinegarweed
- Violet Blue-eyed Mary
- Violet Butterwort
- Violet Draperia
- Violet Lespedeza
- Violet limodore
- Violet Milkvetch
- Violet Milkwort
- Violet passionflower
- Violet Snapdragon
- Violet Suksdorfia
- Violet Wild Petunia
- Violet Wood Sorrel
- Violet-lily
- Viper's bugloss
- Virgin Phacelia
- Virgin Thistle
- Virginia Dayflower
- Virginia Heartleaf
- Virginia Pennywort
- Virginia Pinweed
- Virginia Skullcap
- Virginia Snakeroot
- Virginia Spiderwort
- Virginia Stickseed
- Virginia Thistle
- Virginia Waterleaf
- Virginia White-hair Leather-flower
- Viscaria
- Viscid Candyleaf
- Viscid Locoweed
- Volcanic Gilia
- Voodoo lily
- Vriesea
- Vulture Ironweed
- Wahiawa Cyanea
- Wahiawa Stream Violet
- Wahlenbergia
- Waianae Range Alsinidendron
- Waianae Range Lobelia
- Waihanau Lobelia
- Waihee Clermontia
- Waihee Valley Cyanea
- Wailai Pali Clermontia
- Wailua River Yellow Loosestrife
- Wailupe Valley Treecotton
- Waioiani Clermontia
- Waioli Valley Rollandia
- Waipio Valley Clermontia
- Waldo Rockcress
- Waling-waling
- Walker Prairie Clover
- Walking iris
- Walkingstick Cactus
- Wall Germander
- Wall speedwell
- Wallflower Phoenicaulis
- Wallowa Beardtongue
- Wallowa Indian Paintbrush
- Walter's Aster
- Walter's Violet
- Waltham Creek Clarkia
- Wand Blazing Star
- Wand Fleabane
- Wand Lessingia
- Wand Woollystar
- Waratah
- Ward Beardtongue
- Wartleaf Ceanothus
- Wasatch Aster
- Wasatch Beardtongue
- Wasatch Rock Cress
- Washington Beardtongue
- Washington Jacob's-ladder
- Washoe Combleaf
- Washoe Lupine
- Washoe Phacelia
- Wassuck Penstemon
- Water Dawnflower
- Water figwort
- Water forget-me-not
- Water hyssop
- Water Lobelia
- Water mint
- Water speedwell
- Water spinach
- Water violet
- Water Willow
- Water-shield
- Waterfall Gladiolus
- Waterfall's Milkvetch
- Waterleaf
- Waterleaf Phacelia
- Watermelon Nightshade
- Waterpod
- Watson's Brickellbush
- Watson's Milkwort
- Watson's Penstemon
- Watson's Prickly Phlox
- Watson's Snapdragon
- Watsonia
- Wavy Leaved Ceanothus
- Wavyleaf Indian Paintbrush
- Wavyleaf Purple Coneflower
- Wavyleaf thistle
- Wavyleaf Twinevine
- Wax Begonia
- Waxleaf Beardtongue
- Waxy Checkerbloom
- Weasel Phacelia
- Weasel's snout
- Weber's Saw-wort
- Wedgeleaf Eryngo
- Wedgeleaf Prairie Clover
- Wedgeleaf Primrose
- Wedgeleaf Violet
- Weed's Mariposa Lily
- Weeping boer-bean
- Weeping bottlebrush
- Weeping Buddleja
- Weigela
- Weiser's Milkvetch
- Welsh's Phacelia
- Welted thistle
- Wenatchee Desertparsley
- Wenatchee Larkspur
- Wendt's Adder's-mouth Orchid
- Weniger's Hedgehog Cactus
- West Gulf Leatherflower
- West Indian Meadow Beauty
- West Indian Pinkroot
- Western Aster
- Western blue-eyed grass
- Western Bog Aster
- Western Burning Bush
- Western Campion
- Western columbine
- Western Featherbells
- Western Giant Hyssop
- Western Greenviolet
- Western Horsenettle
- Western hound's tongue
- Western Ironweed
- Western Jacob's Ladder
- Western Meadow Aster
- Western Meadow Rue
- Western Milkvetch
- Western Mountain Aster
- Western Rattlesnakeroot
- Western Red Columbine
- Western redbud
- Western Seapurslane
- Western Showy Aster
- Western Snakeroot
- Western Spotted Coralroot
- Western Sweetshrub
- Western Sweetvetch
- Western Trailing Ticktrefoil
- Western Vervain
- Western Waterleaf
- Western Wild Petunia
- Western Wood Anemone
- Westwater Buckwheat
- Westwater Tumble-mustard
- Wetforest Cyanea
- Wetherill's Buckwheat
- Wetherill's Milkvetch
- Wheatspike Scalystem
- Wheel Milkweed
- Wheeler's Thistle
- Wherry's Pitcherplant
- Whipple's Penstemon
- Whiskerbrush
- White Blue Eyed Mary
- White Blue-eyed Grass
- White Brodiaea
- White Clouds Milkvetch
- White Cushion Fleabane
- White Doll's Daisy
- White False Gilyflower
- White Four O'clock
- White Margined Beardtongue
- White Mariposa Lily
- White Mountain Buckwheat
- White Mountain Clover
- White Mountain False Pennyroyal
- White Mountain Lupine
- White Phacelia
- White Pine Skullcap
- White Ratany
- White Rattlesnake-root
- White River Beardtongue
- White River Coraldrops
- White Sage
- White Stemmed Clarkia
- White Stemmed Gooseberry
- White Waterleaf
- Whited's Beardtongue
- Whiteflower Tansyaster
- Whitehair Leather Flower
- Whitehead Navarretia
- Whiteleaf Leather-flower
- Whiteleaf Lupine
- Whitemargin Phlox
- Whitemargin Pussytoes
- Whitemouth Dayflower
- Whitepanicle Aster
- Whiteray Leastdaisy
- Whitespine Thistle
- Whitestar Morning-glory
- Whitestem Frasera
- Whitestem Hedgenettle
- Whitetip Clover
- Whitewhisker Fiddleleaf
- Whitewhorl Lupine
- Whitewoolly Twintip
- Whiting's Dalea
- Wholeleaf Indian Paintbrush
- Whorled Lousewort
- Whorled Milkwort
- Wickerstem Buckwheat
- Widelip Orchid
- Widewing Springparsley
- Widow's Milkvetch
- Wigandia
- Wilcox's Nipple Cactus
- Wilcox's Penstemon
- Wilcox's Phlox
- Wilcox's Woollystar
- Wild basil
- Wild bergamot
- Wild blue phlox
- Wild buckwheat
- Wild Canterbury Bells
- Wild Cinnamon
- Wild clary
- Wild Coco
- Wild comfrey
- Wild Cosmos
- Wild Crocus
- Wild garlic
- Wild geranium
- Wild ginger
- Wild hyacinth
- Wild leek
- Wild lupine
- Wild mint
- Wild onion
- Wild Pea
- Wild petunia
- Wild poinsettia
- Wild radish
- Wild sweet William
- Wiliwili
- Wilkins Bellflower
- Willamette Fleabane
- Willamette Navarretia
- Willow Cyanea
- Willow gentian
- Willow Spring Blue-eyed Grass
- Willowherb
- Willowleaf Aster
- Wilson's Milkvetch
- Wind poppy
- Winding Mariposa Lily
- Windmill Fringed Gentian
- Winecup
- Winecup Clarkia
- Wineflower
- Wing-stem Camphorweed
- Winged bean
- Winged Four O'Clock
- Winged loosestrife
- Winged Milkvetch
- Winged Milkwort
- Wingpod Purslane
- Winter Daphne
- Winter savory
- Wire Bird's-foot Trefoil
- Wirelettuce
- Wiry Blue-eyed Grass
- Wiry Snapdragon
- Wishbone Fiddleleaf
- Wishbone-bush
- Wishing Tree
- Witch hazel
- Wittmann's Milkvetch
- Wolf Cholla
- Wolfberry
- Wood anemone
- Wood cranesbill
- Wood Forget-me-not
- Wood lily
- Wood speedwell
- Wood's Bunchflower
- Woodbalm
- Woodbine
- Woodland Beardtongue
- Woodland Islandmint
- Woodland Lettuce
- Woodland Peony
- Woodland Poppymallow
- Woodland sage
- Woodruff's Milkvetch
- Woods Clover
- Woody Crinklemat
- Woody Milkvetch
- Woodyaster
- Woodyfruit Evening-primrose
- Woodypod Milkvetch
- Woolly Angelica
- Woolly Bird's-foot Trefoil
- Woolly blue curls
- Woolly Bluestar
- Woolly Brickellbush
- Woolly Burdock
- Woolly Chaffhead
- Woolly Desertdandelion
- Woolly Fleabane
- Woolly headed lessingia
- Woolly Ironweed
- Woolly Locoweed
- Woolly Lousewort
- Woolly Milkweed
- Woolly morning glory
- Woolly Mountainparsley
- Woolly Prairie Clover
- Woolly Rose-mallow
- Woolly Sage
- Woolly Stemodia
- Woolly Sunbonnets
- Woolly thistle
- Woolly Yerba Santa
- Woollyfruit Desertparsley
- Woollyhead Clover
- Woollyhead Prairie Clover
- Woollypod Milkvetch
- Woollystar
- Woolyleaf Ceanothus
- Wooton's Holdback
- Wooton's Prickly Pear
- Wormvine Orchid
- Worsleya
- Woundwort
- Wright's Bedstraw
- Wright's Bird's Beak
- Wright's Blue Eyed Mary
- Wright's Campion
- Wright's Desertpeony
- Wright's Dogweed
- Wright's Dutchman's Pipe
- Wright's Dwarf Gentian
- Wright's Eryngo
- Wright's Fishhook Cactus
- Wright's Globe-mallow
- Wright's Golden-saxifrage
- Wright's Meadow Rue
- Wright's Milkpea
- Wright's Milkvetch
- Wright's Penstemon
- Wright's Skullcap
- Wright's Spiderwort
- Wright's Thelypody
- Wright's Thimblehead
- Wright's Thistle
- Wright's Waterwillow
- Wright's Waxweed
- Wrightwort
- Wrinkled Heartleaf Skullcap
- Wrinklewing Springparsley
- Wujek's Hybrid Violet
- Wulfenia
- Wyeth's Lupine
- Wyoming Besseya
- Wyoming Locoweed
- Wyoming paintbrush
- Wyoming Thistle
- Wyoming Townsend Daisy
- Yakima Bird's Beak
- Yellow Mariposa
- Yellow Milkvetch
- Yelloweyes
- Yellowleaf Iris
- Yellowroot
- Yellowseed Fiddleleaf
- Yellowspine Thistle
- Yellowstone Saxifrage
- Yemen tree aloe
- Yerba Santa
- Yesterday, today and tomorrow
- Youth On Age
- Yuba Lupine
- Yucatan Camphorweed
- Yucatan Sage
- Yucatan Wild Petunia
- Yukon Aster
- Yukon Bellflower
- Yukon Fleabane
- Yukon Fringed Gentian
- Yukon Indian Paintbrush
- Yukon Lupine
- Zigzag clover
- Zigzag Iris
- Zigzag Larkspur
- Zigzag Spiderwort
- Zion Indian Paintbrush
- Zion Milkvetch
- Zion Phlox
- Zonal Geranium
- Zuni Milkvetch
- Zygopetalum
Rare · 60 pts (255)
- African daisy
- African tulip tree
- African violet
- Agapanthus
- Ageratum
- Alfalfa
- Algerian iris
- Allium
- Aloe
- Alpine forget-me-not
- Alstroemeria
- Amaranth
- Amaryllis
- Anemone
- Angel's trumpet
- Angelonia
- Anthurium
- Asiatic lily
- Aster
- Autumn crocus
- Azalea
- Baby blue eyes
- Balloon flower
- Bearded iris
- Bee balm
- Begonia
- Bellflower
- Bird of paradise
- Black iris
- Black orchid
- Black-eyed Susan
- Blanket flower
- Bleeding heart
- Blue Daisy
- Blue false indigo
- Blue Flag
- Blue flax
- Blue hibiscus
- Blue lotus
- Blue sage
- Blue-eyed grass
- Borage
- Bottlebrush
- Bougainvillea
- Bromeliad
- Butterfly bush
- Butterfly pea
- Cactus
- California lilac
- California poppy
- Calla lily
- Camellia
- Campion
- Canada lily
- Canterbury bells
- Cardinal flower
- Catmint
- Cattleya
- Celosia
- Chicory
- China rose
- Chinese hibiscus
- Chinese wisteria
- Chives
- Chocolate cosmos
- Christmas Cactus
- Clematis
- Cleome
- Clover
- Cockscomb
- Colorado blue columbine
- Columbine
- Corn poppy
- Corpse flower
- Cosmos
- Crabapple
- Crape myrtle
- Crocus
- Cyclamen
- Cymbidium
- Dame's rocket
- Daphne
- Datura
- Dayflower
- Daylily
- Deadly nightshade
- Deadnettle
- Delphinium
- Dendrobium
- Desert rose
- Devil's trumpet
- Dianthus
- Dogwood
- Dutch iris
- Echinacea
- Eggplant
- English daisy
- English lavender
- Eucalyptus
- Euphorbia
- False indigo
- Fan flower
- Fire lily
- Firebush
- Fireweed
- Flame tree
- Flax
- Flowering quince
- Four o'clock
- Foxglove
- Freesia
- Fuchsia
- Gentian
- Geranium
- Gerbera
- Gladiolus
- Globe thistle
- Glory lily
- Grape hyacinth
- Ground ivy
- Harebell
- Hawthorn
- Heath
- Heather
- Hellebore
- Himalayan blue poppy
- Hollyhock
- Holy basil
- Honeysuckle
- Hosta
- Impatiens
- Indian Blanket
- Indian paintbrush
- Indigo
- Ironweed
- Jacaranda
- Jacob's ladder
- Japanese morning glory
- Johnny jump-up
- Kangaroo paw
- King protea
- Lady's slipper
- Lantana
- Larkspur
- Lisianthus
- Lobelia
- Lotus
- Love-in-a-mist
- Love-lies-bleeding
- Lupine
- Madagascar periwinkle
- Magnolia
- Mallow
- Mandevilla
- Mandrake
- Marigold
- Mariposa lily
- Mexican petunia
- Mexican sunflower
- Milkweed
- Mint
- Monkeyflower
- Monkshood
- Moss rose
- Moth orchid
- Mountain laurel
- Nasturtium
- New England aster
- Nightshade
- Oleander
- Opium poppy
- Orchid tree
- Oriental lily
- Oxalis
- Pansy
- Pasque flower
- Passion flower
- Peach blossom
- Penstemon
- Pentas
- Phlox
- Pitcher plant
- Plum blossom
- Plumbago
- Plumeria
- Poinsettia
- Pomegranate
- Poppy anemone
- Prairie crocus
- Prickly pear
- Primrose
- Princess flower
- Protea
- Purple clover
- Purple coneflower
- Purple loosestrife
- Purple passionflower
- Rafflesia
- Ranunculus
- Red clover
- Red maple
- Red silk cotton tree
- Red spider lily
- Red trillium
- Redbud
- Rhododendron
- Rose of Sharon
- Rosemary
- Royal poinciana
- Rugosa rose
- Russian sage
- Saffron crocus
- Salvia
- Sand verbena
- Scarlet pimpernel
- Scilla
- Sea holly
- Sea lavender
- Shooting star
- Siberian iris
- Snake's head fritillary
- Spanish bluebell
- Spanish lavender
- Speedwell
- Spider Lily
- Spider orchid
- Spiderwort
- Statice
- Stock
- Sunflower
- Sweet alyssum
- Sweet pea
- Sweet William
- Thistle
- Thyme
- Tiger lily
- Torenia
- Tree peony
- Trillium
- Tropical milkweed
- Trumpet vine
- Vanda
- Verbena
- Vetch
- Victoria water lily
- Viola
- Virginia bluebells
- Wallflower
- Water hyacinth
- Water lily
- Wattle
- Western Lily
- Wild indigo
- Yarrow
- Zinnia
Schooler · 30 pts (20)
- Bluebell
- Carnation
- Chrysanthemum
- Cornflower
- Dahlia
- Daisy
- Forget-me-not
- Hibiscus
- Hyacinth
- Hydrangea
- Iris
- Lily
- Morning glory
- Orchid
- Peony
- Periwinkle
- Petunia
- Snapdragon
- Texas bluebonnet
- Wisteria
Plankton · 10 pts (6)
- Lavender
- Lilac
- Poppy
- Rose
- Tulip
- Violet
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