Plants
1296 species
Adam's Needle
Yucca filamentosa
Adonis Blazingstar
Mentzelia multiflora
Allegheny Blackberry
Rubus allegheniensis
Allegheny Monkeyflower
Mimulus ringens
Allegheny Serviceberry
Amelanchier laevis
American Alumroot
Heuchera americana
American Basswood
Tilia americana
American Beautyberry
Callicarpa americana
American Beech
Fagus grandifolia
American Bellflower
Campanula americana
American Bittersweet
Celastrus scandens
American Black Currant
Ribes americanum
American Bladdernut
Staphylea trifolia
American Cancer-root
Conopholis americana
American Chestnut
Castanea dentata
American Columbo
Frasera caroliniensis
American Cranberry
Vaccinium macrocarpon
American Dittany
Cunila origanoides
American Dog Violet
Viola conspersa
American Eelgrass
Vallisneria americana
American Elderberry
Sambucus canadensis
American Elm
Ulmus americana
American Hazelnut
Corylus americana
American Highbush Cranberry
Viburnum opulus var. americanum
American Holly
Ilex opaca
American Hornbeam
Carpinus caroliniana
American Lotus
Nelumbo lutea
American Mannagrass
Glyceria grandis
American Mountain Ash
Sorbus americana
American Pennyroyal
Hedeoma pulegioides
American Persimmon
Diospyros virginiana
American Plum
Prunus americana
American Sea Rocket
Cakile edentula
American Snowbell
Styrax americanus
American Spatterdock
Nuphar advena
American Sycamore
Platanus occidentalis
American Vetch
Vicia americana
American Water Horehound
Lycopus americanus
American Wisteria
Wisteria frutescens
Amur Honeysuckle
Lonicera maackii
Anise Hyssop
Agastache foeniculum
Arctic Rush
Juncus arcticus
Arizona White Oak
Quercus arizonica
Aromatic Aster
Symphyotrichum oblongifolium
Arrowleaf Balsamroot
Balsamorhiza sagittata
Arrowleaf Groundsel
Senecio triangularis
Arrowwood Viburnum
Viburnum dentatum
Arumleaf Arrowhead
Sagittaria cuneata
Autumn Coralroot
Corallorhiza odontorhiza
Autumn Olive
Elaeagnus umbellata
Autumn Sage
Salvia greggii
Avalanche Lily
Erythronium montanum
Awl-fruited Sedge
Carex stipata
Bald Cypress
Taxodium distichum
Baldhip Rose
Rosa gymnocarpa
Balsam Fir
Abies balsamea
Balsam Poplar
Populus balsamifera
Baltic Rush
Juncus balticus
Bare Miterwort
Mitella nuda
Barestem Lomatium
Lomatium nudicaule
Barrel Cactus
Ferocactus cylindraceus
Barren Strawberry
Waldsteinia fragarioides
Beach Pea
Lathyrus japonicus
Beach Plum
Prunus maritima
Beaked Yucca
Yucca rostrata
Bearberry
Arctostaphylos uva-ursi
Beargrass
Nolina microcarpa
Beavertail Cactus
Opuntia basilaris
Bebb's Willow
Salix bebbiana
Beechdrops
Epifagus virginiana
Bermuda Grass
Cynodon dactylon
Bicknell's Crane's-bill
Geranium bicknellii
Big Bend Bluebonnet
Lupinus havardii
Big Bluestem
Andropogon gerardii
Big Bluestem
Andropogon gerardi
Big Cordgrass
Spartina cynosuroides
Big Sagebrush
Artemisia tridentata
Bigcone Douglas-fir
Pseudotsuga macrocarpa
Bigleaf Aster
Eurybia macrophylla
Bigleaf Lupine
Lupinus polyphyllus
Bigleaf Magnolia
Magnolia macrophylla
Bigleaf Maple
Acer macrophyllum
Bigpod Sesbania
Sesbania herbacea
Bigtooth Aspen
Populus grandidentata
Bird's-eye Gilia
Gilia tricolor
Bird's-foot Coreopsis
Coreopsis palmata
Bird's-foot Violet
Viola pedata
Bishop Pine
Pinus muricata
Bitter Cherry
Prunus emarginata
Bitternut Hickory
Carya cordiformis
Bitterroot
Lewisia rediviva
Bittersweet Nightshade
Solanum dulcamara
Bitterweed
Helenium amarum
Black Ash
Fraxinus nigra
Black Cherry
Prunus serotina
Black Cohosh
Actaea racemosa
Black Cottonwood
Populus trichocarpa
Black Gum
Nyssa biflora
Black Huckleberry
Gaylussacia baccata
Black Locust
Robinia pseudoacacia
Black Needlerush
Juncus roemerianus
Black Nightshade
Solanum nigrum
Black Oak
Quercus velutina
Black Raspberry
Rubus occidentalis
Black Spruce
Picea mariana
Black Tupelo
Nyssa sylvatica
Black Walnut
Juglans nigra
Black Willow
Salix nigra
Black-eyed Susan
Rudbeckia hirta
Blackbrush Acacia
Acacia rigidula
Blackhaw
Viburnum prunifolium
Blackjack Oak
Quercus marilandica
Blackseed Plantain
Plantago rugelii
Bladder Sedge
Carex intumescens
Blanketflower
Gaillardia aristata
Blind Prickly Pear
Opuntia rufida
Blood Milkwort
Polygala sanguinea
Bloodroot
Sanguinaria canadensis
Blue Ash
Fraxinus quadrangulata
Blue Cohosh
Caulophyllum thalictroides
Blue Elderberry
Sambucus nigra ssp. cerulea
Blue Flag Iris
Iris versicolor
Blue Flax
Linum lewisii
Blue Grama
Bouteloua gracilis
Blue Mistflower
Conoclinium coelestinum
Blue Oak
Quercus douglasii
Blue Palo Verde
Cercidium floridum
Blue Sage
Salvia azurea
Blue Spruce
Picea pungens
Blue Toadflax
Nuttallanthus canadensis
Blue Vervain
Verbena hastata
Blue Wild Indigo
Baptisia australis
Blue-eyed Grass
Sisyrinchium angustifolium
Blueblossom
Ceanothus thyrsiflorus
Bluejack Oak
Quercus incana
Bluejoint
Calamagrostis canadensis
Bluestar
Amsonia hubrichtii
Blunt Spikerush
Eleocharis obtusa
Blunt-lobed Woodsia
Woodsia obtusa
Bog Asphodel
Narthecium americanum
Bog Goldenrod
Solidago uliginosa
Bog Rosemary
Andromeda polifolia
Bog Spicebush
Lindera melissifolia
Bogbean
Menyanthes trifoliata
Bottle Gentian
Gentiana andrewsii
Bottlebrush Grass
Elymus hystrix
Box Elder
Acer negundo
Boykin's Lobelia
Lobelia boykinii
Bracken Fern
Pteridium aquilinum
Branching Sida
Sidastrum paniculatum
Bridge Penstemon
Penstemon rostriflorus
Bristly Nama
Nama hispidum
Bristly Sedge
Carex comosa
Broadleaf Arrowhead
Sagittaria latifolia
Brook Saxifrage
Boykinia aconitifolia
Broom Dalea
Dalea scoparia
Broomsedge
Andropogon virginicus
Buffalo Clover
Trifolium reflexum
Buffalo Grass
Bouteloua dactyloides
Bulblet Fern
Cystopteris bulbifera
Bull Thistle
Cirsium vulgare
Bullhead Lily
Nuphar variegata
Bunchberry
Cornus canadensis
Bur Oak
Quercus macrocarpa
Bushy Pinweed
Lechea stricta
Butter-and-eggs
Linaria vulgaris
Butterfly Mariposa Lily
Calochortus venustus
Butterfly Weed
Asclepias tuberosa
Butternut
Juglans cinerea
Buttonbush
Cephalanthus occidentalis
Cabbage Palm
Sabal palmetto
California Black Oak
Quercus kelloggii
California Brome
Bromus carinatus
California Buckeye
Aesculus californica
California Fan Palm
Washingtonia filifera
California Fawn Lily
Erythronium californicum
California Pitcher Plant
Darlingtonia californica
California Poppy
Eschscholzia californica
California Rose
Rosa californica
California Sagebrush
Artemisia californica
California Sycamore
Platanus racemosa
Canada Anemone
Anemone canadensis
Canada Goldenrod
Solidago canadensis
Canada Lily
Lilium canadense
Canada Mayflower
Maianthemum canadense
Canada Moonseed
Menispermum canadense
Canada Plum
Prunus nigra
Canada St. John's-wort
Hypericum canadense
Canada Violet
Viola canadensis
Canada Wild Rye
Elymus canadensis
Canada Yew
Taxus canadensis
Canadian Burnet
Sanguisorba canadensis
Canadian Honewort
Cryptotaenia canadensis
Canadian Milkvetch
Astragalus canadensis
Canadian Serviceberry
Amelanchier canadensis
Canyon Live Oak
Quercus chrysolepis
Cardinal Flower
Lobelia cardinalis
Carolina Ash
Fraxinus caroliniana
Carolina Bush Pea
Thermopsis caroliniana
Carolina Cranesbill
Geranium carolinianum
Carolina Fanwort
Cabomba caroliniana
Carolina Holly
Ilex ambigua
Carolina Horsenettle
Solanum carolinense
Carolina Rhododendron
Rhododendron minus
Carolina Rose
Rosa carolina
Carolina Silverbell
Halesia carolina
Carolina Spring Beauty
Claytonia caroliniana
Carolina Vetch
Vicia caroliniana
Carolina Wild Petunia
Ruellia caroliniensis
Cascara
Frangula purshiana
Catawba Rhododendron
Rhododendron catawbiense
Catclaw Acacia
Acacia greggii
Celandine Poppy
Stylophorum diphyllum
Century Plant
Agave americana
Chain-fruit Cholla
Cylindropuntia fulgida
Chaste Tree
Vitex agnus-castus
Checker Lily
Fritillaria affinis
Checkerbloom
Sidalcea malviflora
Cherrybark Oak
Quercus pagoda
Chickasaw Plum
Prunus angustifolia
Chicory
Cichorium intybus
Chinkapin Oak
Quercus muehlenbergii
Chokecherry
Prunus virginiana
Christmas Fern
Polystichum acrostichoides
Cinnamon Fern
Osmundastrum cinnamomeum
Clammy Ground Cherry
Physalis heterophylla
Clammy Hedgehyssop
Gratiola neglecta
Clammy Locust
Robinia viscosa
Claret Cup Cactus
Echinocereus triglochidiatus
Clasping Milkweed
Asclepias amplexicaulis
Clasping Twisted Stalk
Streptopus amplexifolius
Cleavers
Galium aparine
Climbing Hempweed
Mikania scandens
Climbing Prairie Rose
Rosa setigera
Closed Gentian
Gentiana clausa
Cloudberry
Rubus chamaemorus
Club Cholla
Grusonia clavata
Clustered Broomrape
Orobanche fasciculata
Clustered Mountain Mint
Pycnanthemum muticum
Clustered Poppy Mallow
Callirhoe triangulata
Coast Live Oak
Quercus agrifolia
Coast Redwood
Sequoia sempervirens
Cockspur Hawthorn
Crataegus crus-galli
Coconut Palm
Cocos nucifera
Colorado Blue Columbine
Aquilegia coerulea
Columbia Lily
Lilium columbianum
Common Bladderwort
Utricularia vulgaris
Common Blue Violet
Viola sororia
Common Boneset
Eupatorium perfoliatum
Common Buckthorn
Rhamnus cathartica
Common Burdock
Arctium minus
Common Butterwort
Pinguicula vulgaris
Common Camas
Camassia quamash
Common Cattail
Typha latifolia
Common Chickweed
Stellaria media
Common Cottongrass
Eriophorum angustifolium
Common Dogbane
Apocynum cannabinum
Common Eelgrass
Zostera marina
Common Evening Primrose
Oenothera biennis
Common Evening Primrose
Oenothera biennis
Common Hackberry
Celtis occidentalis
Common Hops
Humulus lupulus
Common Hoptree
Ptelea trifoliata
Common Ironweed
Vernonia fasciculata
Common Juniper
Juniperus communis
Common Lousewort
Pedicularis canadensis
Common Mallow
Malva neglecta
Common Manzanita
Arctostaphylos manzanita
Common Milkweed
Asclepias syriaca
Common Moonwort
Botrychium lunaria
Common Mullein
Verbascum thapsus
Common Ninebark
Physocarpus opulifolius
Common Plantain
Plantago major
Common Ragweed
Ambrosia artemisiifolia
Common Reed
Phragmites australis
Common Rush
Juncus effusus
Common Sneezeweed
Helenium autumnale
Common Snowberry
Symphoricarpos albus
Common Sunflower
Helianthus annuus
Common Tansy
Tanacetum vulgare
Common Teasel
Dipsacus fullonum
Common Vetch
Vicia sativa
Common Yarrow
Achillea millefolium
Common Yellow Wood Sorrel
Oxalis stricta
Compass Plant
Silphium laciniatum
Coral Honeysuckle
Lonicera sempervirens
Corn Lily
Veratrum californicum
Cottontop Cactus
Echinocactus polycephalus
Coulter Pine
Pinus coulteri
Cow Parsnip
Heracleum maximum
Cow Wheat
Melampyrum lineare
Cream Cactus
Mammillaria pottsii
Cream Vetchling
Lathyrus ochroleucus
Cream Wild Indigo
Baptisia bracteata
Creeping Barberry
Mahonia repens
Creeping Bent
Agrostis stolonifera
Creeping Juniper
Juniperus horizontalis
Creeping Meehania
Meehania cordata
Creeping Snowberry
Gaultheria hispidula
Creosote Bush
Larrea tridentata
Crested Iris
Iris cristata
Crested Wood Fern
Dryopteris cristata
Cross-leaved Milkwort
Polygala cruciata
Crow Poison
Nothoscordum bivalve
Cuckooflower
Cardamine pratensis
Cucumbertree
Magnolia acuminata
Culver's Root
Veronicastrum virginicum
Cup Plant
Silphium perfoliatum
Curly Dock
Rumex crispus
Curly Pondweed
Potamogeton crispus
Cut-leaved Toothwort
Cardamine concatenata
Cutleaf Blackberry
Rubus laciniatus
Cutleaf Coneflower
Rudbeckia laciniata
Cutleaf Daisy
Erigeron compositus
Cylindrical Blazing Star
Liatris cylindracea
Dahoon Holly
Ilex cassine
Dandelion
Taraxacum officinale
Datil Yucca
Yucca baccata
Dawn Redwood
Metasequoia glyptostroboides
Deer Fern
Blechnum spicant
Deergrass
Muhlenbergia rigens
Dense Blazing Star
Liatris spicata
Desert Agave
Agave deserti
Desert Beardtongue
Penstemon pseudospectabilis
Desert Bluebells
Phacelia campanularia
Desert Five-spot
Eremalche rotundifolia
Desert Four O'Clock
Mirabilis multiflora
Desert Globemallow
Sphaeralcea ambigua
Desert Jatropha
Jatropha macrorhiza
Desert Lily
Hesperocallis undulata
Desert Paintbrush
Castilleja chromosa
Desert Peach
Prunus andersonii
Desert Rose
Rosa stellata
Desert Sage
Salvia dorrii
Desert Spoon
Dasylirion wheeleri
Devil's Beggarticks
Bidens frondosa
Dewberry
Rubus trivialis
Dissected Grape Fern
Botrychium dissectum
Ditch Stonecrop
Penthorum sedoides
Dog Hobble
Leucothoe fontanesiana
Dotted Hawthorn
Crataegus punctata
Douglas Spiraea
Spiraea douglasii
Douglas-fir
Pseudotsuga menziesii
Downy Hawthorn
Crataegus mollis
Downy Lobelia
Lobelia puberula
Downy Rattlesnake Plantain
Goodyera pubescens
Downy Serviceberry
Amelanchier arborea
Downy Wood Mint
Blephilia ciliata
Downy Yellow Violet
Viola pubescens
Dragon's Mouth Orchid
Arethusa bulbosa
Drooping Trillium
Trillium flexipes
Drummond Red Maple
Acer rubrum var. drummondii
Drummond's Phlox
Phlox drummondii
Dutchman's Breeches
Dicentra cucullaria
Dwarf Birch
Betula nana
Dwarf Indigo Bush
Amorpha nana
Dwarf Palmetto
Sabal minor
Dwarf Rattlesnake Plantain
Goodyera repens
Dwarf Witch Alder
Fothergilla gardenii
Early Buttercup
Ranunculus fascicularis
Early Coralroot
Corallorhiza trifida
Early Goldenrod
Solidago juncea
Early Meadow Rue
Thalictrum dioicum
Early Saxifrage
Saxifraga virginiensis
Eastern Baccharis
Baccharis halimifolia
Eastern Black Nightshade
Solanum ptycanthum
Eastern Bluestar
Amsonia tabernaemontana
Eastern Cottonwood
Populus deltoides
Eastern Gamagrass
Tripsacum dactyloides
Eastern Hemlock
Tsuga canadensis
Eastern Leatherwood
Dirca palustris
Eastern Prickly Pear
Opuntia humifusa
Eastern Red Cedar
Juniperus virginiana
Eastern Red Columbine
Aquilegia canadensis
Eastern Redbud
Cercis canadensis
Eastern Skunk Cabbage
Symplocarpus foetidus
Eastern Swamp Privet
Forestiera acuminata
Eastern White Pine
Pinus strobus
Eaton's Penstemon
Penstemon eatonii
Ebony Spleenwort
Asplenium platyneuron
Elegant Calicoflower
Downingia elegans
Elegant Clarkia
Clarkia unguiculata
Elegant Mariposa
Calochortus elegans
Elephanthead Lousewort
Pedicularis groenlandica
Emory Oak
Quercus emoryi
Engelmann Oak
Quercus engelmannii
Engelmann Spruce
Picea engelmannii
Engelmann's Prickly Pear
Opuntia engelmannii
Engelmann's Quillwort
Isoetes engelmannii
English Hawthorn
Crataegus laevigata
Entire-leaved Rosinweed
Silphium integrifolium
Fairy Slipper
Calypso bulbosa
False Indigo
Amorpha fruticosa
False Sunflower
Heliopsis helianthoides
Fan Clubmoss
Diphasiastrum digitatum
Feather Plume
Dalea formosa
Fen Grass of Parnassus
Parnassia glauca
Fernleaf Biscuitroot
Lomatium dissectum
Field Bindweed
Convolvulus arvensis
Field Horsetail
Equisetum arvense
Field Milkvetch
Astragalus agrestis
Field Pussytoes
Antennaria neglecta
Field Thistle
Cirsium discolor
Finger Poppy Mallow
Callirhoe digitata
Fire Pink
Silene virginica
Fireweed
Chamerion angustifolium
Firewheel
Gaillardia pulchella
Fishhook Barrel Cactus
Ferocactus wislizeni
Flame Azalea
Rhododendron calendulaceum
Flat-top White Aster
Doellingeria umbellata
Flatface Calicoflower
Downingia pulchella
Floating Pondweed
Potamogeton natans
Florida Thatch Palm
Thrinax radiata
Flowering Dogwood
Cornus florida
Flowering Raspberry
Rubus odoratus
Flowering Spurge
Euphorbia corollata
Foamflower
Tiarella cordifolia
Four-wing Saltbush
Atriplex canescens
Fowl Manna Grass
Glyceria striata
Fox Grape
Vitis labrusca
Fox Sedge
Carex vulpinoidea
Foxglove Beardtongue
Penstemon digitalis
Foxtail Barley
Hordeum jubatum
Foxtail Dalea
Dalea leporina
Foxtail Pine
Pinus balfouriana
Fragile Fern
Cystopteris fragilis
Fragrant Ladies'-tresses
Spiranthes odorata
Fragrant Mimosa
Mimosa borealis
Fragrant Sumac
Rhus aromatica
Fragrant Water Lily
Nymphaea odorata
Fraser Magnolia
Magnolia fraseri
Fremont Cottonwood
Populus fremontii
Fringed Loosestrife
Lysimachia ciliata
Fringed Puccoon
Lithospermum incisum
Fringed Sedge
Carex crinita
Fringeleaf Wild Petunia
Ruellia humilis
Fringetree
Chionanthus virginicus
Frost Grape
Vitis vulpina
Gambel Oak
Quercus gambelii
Garden Phlox
Phlox paniculata
Garlic Mustard
Alliaria petiolata
Georgia Indigo Bush
Amorpha georgiana
Giant Arrowhead
Sagittaria montevidensis
Giant Bur-reed
Sparganium eurycarpum
Giant Cutgrass
Zizaniopsis miliacea
Giant Horsetail
Equisetum telmateia
Giant Ragweed
Ambrosia trifida
Giant Red Indian Paintbrush
Castilleja miniata
Giant Sequoia
Sequoiadendron giganteum
Glory of Texas
Thelocactus bicolor
Goat's Rue
Tephrosia virginiana
Golden Alexanders
Zizia aurea
Golden Canna
Canna flaccida
Golden Chinkapin
Chrysolepis chrysophylla
Golden Club
Orontium aquaticum
Golden Currant
Ribes aureum
Golden Groundsel
Packera aurea
Golden Paintbrush
Castilleja levisecta
Golden Saxifrage
Chrysosplenium americanum
Golden Sedge
Carex aurea
Goldenball Lead Tree
Leucaena retusa
Goldenseal
Hydrastis canadensis
Goldie's Wood Fern
Dryopteris goldiana
Goldthread
Coptis trifolia
Gooseberry-leaved Globemallow
Sphaeralcea grossulariifolia
Grand Fir
Abies grandis
Grass Pink Orchid
Calopogon tuberosus
Grass-leaved Goldenrod
Euthamia graminifolia
Gray Birch
Betula populifolia
Gray Goldenrod
Solidago nemoralis
Gray's Sedge
Carex grayi
Grayhead Coneflower
Ratibida pinnata
Great Basin Bristlecone Pine
Pinus longaeva
Great Blue Lobelia
Lobelia siphilitica
Great Camas
Camassia leichtlinii
Great Lead Tree
Leucaena pulverulenta
Greater Fringed Gentian
Gentianopsis crinita
Green Alder
Alnus viridis
Green Antelopehorn
Asclepias viridis
Green Ash
Fraxinus pennsylvanica
Green Dragon
Arisaema dracontium
Green Hawthorn
Crataegus viridis
Green Milkweed
Asclepias viridiflora
Green Pitcher Plant
Sarracenia oreophila
Green Trillium
Trillium viride
Groundnut
Apios americana
Gumweed
Grindelia squarrosa
Hairawn Muhly
Muhlenbergia capillaris
Hairy Alumroot
Heuchera villosa
Hairy Manzanita
Arctostaphylos columbiana
Hairy Sweet Cicely
Osmorhiza claytoni
Hairy Waterclover
Marsilea vestita
Hairy White Oldfield Aster
Symphyotrichum pilosum
Hairy Wood Mint
Blephilia hirsuta
Hairy Woodland Brome
Bromus pubescens
Hairy Woodrush
Luzula acuminata
Halberd-leaved Rose Mallow
Hibiscus laevis
Hardstem Bulrush
Schoenoplectus acutus
Harebell
Campanula rotundifolia
Hay-scented Fern
Dennstaedtia punctilobula
Hazel Alder
Alnus serrulata
Heartleaf Golden Alexander
Zizia aptera
Heartleaf Nettle
Urtica chamaedryoides
Hedge Bindweed
Calystegia sepium
Hedgehog Cactus
Echinocereus engelmannii
Helleborine
Epipactis helleborine
Herb Robert
Geranium robertianum
High-tide Bush
Iva frutescens
Highbush Blueberry
Vaccinium corymbosum
Highbush Cranberry
Viburnum opulus
Himalayan Blackberry
Rubus armeniacus
Hoary Vervain
Verbena stricta
Hog Peanut
Amphicarpaea bracteata
Honey Locust
Gleditsia triacanthos
Honey Mesquite
Prosopis glandulosa
Hooded Ladies'-tresses
Spiranthes romanzoffiana
Hooker's Fairybells
Disporum hookeri
Hooker's Orchid
Platanthera hookeri
Hooker's Townsend Daisy
Townsendia hookeri
Hop Sedge
Carex lupulina
Hophornbeam
Ostrya virginiana
Horned Bladderwort
Utricularia cornuta
Horse Crippler
Echinocactus texensis
Huachuca Agave
Agave parryi var. huachucensis
Idaho Fescue
Festuca idahoensis
Indian Cucumber Root
Medeola virginiana
Indian Pipe
Monotropa uniflora
Indian Tobacco
Lobelia inflata
Indiangrass
Sorghastrum nutans
Inkberry
Ilex glabra
Jack Pine
Pinus banksiana
Jack-in-the-Pulpit
Arisaema triphyllum
Jacob's Ladder
Polemonium caeruleum
Japanese Honeysuckle
Lonicera japonica
Japanese Knotweed
Reynoutria japonica
Jeffrey Pine
Pinus jeffreyi
Jerusalem Artichoke
Helianthus tuberosus
Jerusalem Thorn
Parkinsonia aculeata
Johnsongrass
Sorghum halepense
Joshua Tree
Yucca brevifolia
Kalm's Lobelia
Lobelia kalmii
Kalm's St. John's-wort
Hypericum kalmianum
Kentucky Bluegrass
Poa pratensis
Kentucky Coffeetree
Gymnocladus dioicus
Knobcone Pine
Pinus attenuata
Knotted Rush
Juncus nodosus
Kudzu
Pueraria montana
Labrador Tea
Rhododendron groenlandicum
Lace Hedgehog Cactus
Echinocereus reichenbachii
Lacy Phacelia
Phacelia tanacetifolia
Lady Fern
Athyrium filix-femina
Lake Huron Tansy
Tanacetum huronense
Lake Sedge
Carex lacustris
Lance-leaved Violet
Viola lanceolata
Lanceleaf Coreopsis
Coreopsis lanceolata
Lanceleaf Frog Fruit
Phyla lanceolata
Lapland Rosebay
Rhododendron lapponicum
Large Blazing Star
Liatris scariosa
Large Crabgrass
Digitaria sanguinalis
Large Gallberry
Ilex coriacea
Large Purple Fringed Orchid
Platanthera grandiflora
Large White Trillium
Trillium grandiflorum
Large Whorled Pogonia
Isotria verticillata
Large-flowered Bellwort
Uvularia grandiflora
Large-flowered Collomia
Collomia grandiflora
Large-flowered Penstemon
Penstemon grandiflorus
Large-flowered Star Tulip
Calochortus uniflorus
Large-leaved Avens
Geum macrophyllum
Leadplant
Amorpha canescens
Leatherleaf
Chamaedaphne calyculata
Leathery Grapefern
Botrychium multifidum
Lechuguilla
Agave lechuguilla
Lemon Beebalm
Monarda citriodora
Lewis's Monkeyflower
Erythranthe lewisii
Licorice Fern
Polypodium glycyrrhiza
Lily of the Valley
Convallaria majalis
Limber Pine
Pinus flexilis
Limestone Adder's-tongue
Ophioglossum engelmannii
Lindheimer's Beeblossom
Oenothera lindheimeri
Linear-leaved Sundew
Drosera linearis
Lingonberry
Vaccinium vitis-idaea
Little Bluestem
Schizachyrium scoparium
Little Nipple Cactus
Mammillaria heyderi
Live Oak
Quercus virginiana
Living Rock Cactus
Ariocarpus fissuratus
Lizard's Tail
Saururus cernuus
Loblolly Bay
Gordonia lasianthus
Loblolly Pine
Pinus taeda
Lodgepole Pine
Pinus contorta
Loesel's Twayblade
Liparis loeselii
Longleaf Ground Cherry
Physalis longifolia
Longleaf Lobelia
Lobelia elongata
Longleaf Phlox
Phlox longifolia
Longleaf Pine
Pinus palustris
Longspine Prickly Pear
Opuntia macrocentra
Longstyle Sweetroot
Osmorhiza longistylis
Lowbush Blueberry
Vaccinium angustifolium
Lyre-leaved Sage
Salvia lyrata
Mad Dog Skullcap
Scutellaria lateriflora
Maidenhair Spleenwort
Asplenium trichomanes
Maleberry
Lyonia ligustrina
Mapleleaf Viburnum
Viburnum acerifolium
Marginal Wood Fern
Dryopteris marginalis
Marsh Bellflower
Campanula aparinoides
Marsh Cinquefoil
Potentilla palustris
Marsh Fern
Thelypteris palustris
Marsh Hedgenettle
Stachys palustris
Marsh Horsetail
Equisetum palustre
Marsh Marigold
Caltha palustris
Marsh Rattlesnakemaster
Eryngium aquaticum
Marsh Vetchling
Lathyrus palustris
Maryland Figwort
Scrophularia marilandica
Matilija Poppy
Romneya coulteri
Maximilian Sunflower
Helianthus maximiliani
Mayapple
Podophyllum peltatum
Meadow Foxtail
Alopecurus pratensis
Meadow Spikemoss
Selaginella apoda
Meadow Willow
Salix petiolaris
Mealy Blue Sage
Salvia farinacea
Mexican Blue Oak
Quercus oblongifolia
Mexican Fan Palm
Washingtonia robusta
Mexican Mosquito Fern
Azolla mexicana
Mexican Prickly Poppy
Argemone mexicana
Mexican Redbud
Cercis canadensis var. mexicana
Michaux's Stitchwort
Minuartia michauxii
Michigan Lily
Lilium michiganense
Miner's Lettuce
Claytonia perfoliata
Mistassini Primrose
Primula mistassinica
Mock Orange
Philadelphus lewisii
Monterey Pine
Pinus radiata
Moss Campion
Silene acaulis
Moss Phlox
Phlox subulata
Moth Mullein
Verbascum blattaria
Mountain Arnica
Arnica chamissonis
Mountain Avens
Dryas octopetala
Mountain Bog Gentian
Gentiana calycosa
Mountain Death Camas
Anticlea elegans
Mountain Hemlock
Tsuga mertensiana
Mountain Laurel
Kalmia latifolia
Mountain Pennyroyal
Monardella odoratissima
Mountain Wood Sorrel
Oxalis montana
Mule's Ears
Wyethia amplexicaulis
Multiflora Rose
Rosa multiflora
Nannyberry
Viburnum lentago
Narrow-leaved Coneflower
Echinacea angustifolia
Narrowleaf Cattail
Typha angustifolia
Narrowleaf Cottonwood
Populus angustifolia
Narrowleaf Cottonwood
Populus angustifolia
Narrowleaf False Dragonhead
Physostegia angustifolia
Narrowleaf Plantain
Plantago lanceolata
Nebraska Sedge
Carex nebrascensis
Neches River Rose Mallow
Hibiscus dasycalyx
Needle and Thread Grass
Nassella comata
Needle Palm
Rhapidophyllum hystrix
Netleaf Hackberry
Celtis reticulata
Netted Chain Fern
Woodwardia areolata
Nettle-leaved Giant Hyssop
Agastache urticifolia
New England Aster
Symphyotrichum novae-angliae
New England Aster
Symphyotrichum novae-angliae
New Jersey Tea
Ceanothus americanus
New Mexico Locust
Robinia neomexicana
Noble Fir
Abies procera
Nodding Ladies' Tresses
Spiranthes cernua
Nodding Onion
Allium cernuum
Nodding Trillium
Trillium cernuum
Nootka Lupine
Lupinus nootkatensis
Nootka Rose
Rosa nutkana
Northern Adder's-tongue
Ophioglossum pusillum
Northern Bayberry
Morella pensylvanica
Northern Bayberry
Morella pensylvanica
Northern Bugleweed
Lycopus uniflorus
Northern Catalpa
Catalpa speciosa
Northern Maidenhair Fern
Adiantum pedatum
Northern Pin Oak
Quercus ellipsoidalis
Northern Red Oak
Quercus rubra
Northern Slender Ladies' Tresses
Spiranthes lacera
Northern White Cedar
Thuja occidentalis
Northern Wild Ginger
Asarum canadense
Northern Wild Rice
Zizania palustris
Northwest Territory Sedge
Carex utriculata
Nuttall's Death Camas
Anticlea nuttallii
Nuttall's Larkspur
Delphinium nuttallianum
Nuttall's Lobelia
Lobelia nuttallii
Nylon Hedgehog Cactus
Echinocereus viridiflorus
Oak Fern
Gymnocarpium dryopteris
Oakleaf Hydrangea
Hydrangea quercifolia
Obedient Plant
Physostegia virginiana
Oblong-leaved Sundew
Drosera intermedia
Oceanspray
Holodiscus discolor
Ocotillo
Fouquieria splendens
Ohio Buckeye
Aesculus glabra
Ohio Spiderwort
Tradescantia ohiensis
Old Man of the Mountain
Hymenoxys grandiflora
One-flowered Broomrape
Orobanche uniflora
One-flowered Pyrola
Moneses uniflora
Orange Agoseris
Agoseris aurantiaca
Orange Coneflower
Rudbeckia fulgida
Orange Milkwort
Polygala lutea
Orange Sneezeweed
Hymenoxys hoopesii
Orchardgrass
Dactylis glomerata
Oregon Grape
Mahonia aquifolium
Oregon Sunshine
Eriophyllum lanatum
Oregon White Oak
Quercus garryana
Organ Pipe Cactus
Stenocereus thurberi
Oriental Bittersweet
Celastrus orbiculatus
Orpine
Hylotelephium telephium
Osage Orange
Maclura pomifera
Ostrich Fern
Matteuccia struthiopteris
Oval-leaved Blueberry
Vaccinium ovalifolium
Overcup Oak
Quercus lyrata
Oxeye Daisy
Leucanthemum vulgare
Pacific Blackberry
Rubus ursinus
Pacific Bleeding Heart
Dicentra formosa
Pacific Crabapple
Malus fusca
Pacific Dogwood
Cornus nuttallii
Pacific Madrone
Arbutus menziesii
Pacific Ninebark
Physocarpus capitatus
Pacific Rhododendron
Rhododendron macrophyllum
Pacific Silver Fir
Abies amabilis
Pacific Yew
Taxus brevifolia
Pagoda Dogwood
Cornus alternifolia
Painted Trillium
Trillium undulatum
Pale Agoseris
Agoseris glauca
Pale Evening Primrose
Oenothera pallida
Pale False Foxglove
Agalinis skinneriana
Pale Indian Plantain
Arnoglossum atriplicifolium
Pale Jewelweed
Impatiens pallida
Pale Mannagrass
Torreyochloa pallida
Pale Poppy Mallow
Callirhoe alcaeoides
Pale Purple Coneflower
Echinacea pallida
Pale-spike Lobelia
Lobelia spicata
Palmer's Penstemon
Penstemon palmeri
Panicled Tick Trefoil
Desmodium paniculatum
Paper Birch
Betula papyrifera
Parrot Pitcher Plant
Sarracenia psittacina
Parry's Agave
Agave parryi
Parry's Penstemon
Penstemon parryi
Parry's Primrose
Primula parryi
Parry's Townsendia
Townsendia parryi
Partridge Pea
Chamaecrista fasciculata
Partridgeberry
Mitchella repens
Pasqueflower
Pulsatilla patens
Path Rush
Juncus tenuis
Pawpaw
Asimina triloba
Peachleaf Willow
Salix amygdaloides
Pearly Everlasting
Anaphalis margaritacea
Pecan
Carya illinoinensis
Pendant-pod Locoweed
Oxytropis deflexa
Pennsylvania Sedge
Carex pensylvanica
Perennial Ryegrass
Lolium perenne
Peyote
Lophophora williamsii
Pickerelweed
Pontederia cordata
Piedmont Azalea
Rhododendron canescens
Pignut Hickory
Carya glabra
Pima Pincushion Cactus
Coryphantha scheeri
Pin Cherry
Prunus pensylvanica
Pin Oak
Quercus palustris
Pinesap
Monotropa hypopithys
Pink Evening Primrose
Oenothera speciosa
Pink Lady's Slipper
Cypripedium acaule
Pink Milkwort
Polygala incarnata
Pink Pyrola
Pyrola asarifolia
Pink Turtlehead
Chelone lyonii
Pink Wild Bean
Strophostyles umbellata
Pink-form Trillium
Trillium grandiflorum f. roseum
Pinxterbloom Azalea
Rhododendron periclymenoides
Pinyon Pine
Pinus edulis
Pipsissewa
Chimaphila umbellata
Pitch Pine
Pinus rigida
Pitcher's Clematis
Clematis pitcheri
Plains Coreopsis
Coreopsis tinctoria
Plains Cottonwood
Populus sargentii
Plumleaf Azalea
Rhododendron prunifolium
Pointed-leaved Tick Trefoil
Desmodium glutinosum
Poison Hemlock
Conium maculatum
Poison Ivy
Toxicodendron radicans
Poison Sumac
Toxicodendron vernix
Poke Milkweed
Asclepias exaltata
Pokeweed
Phytolacca americana
Ponderosa Pine
Pinus ponderosa
Porcupine Grass
Hesperostipa spartea
Porter's Licorice-root
Ligusticum porteri
Post Oak
Quercus stellata
Poverty Oatgrass
Danthonia spicata
Powderpuff
Mimosa strigillosa
Powdery Thalia
Thalia dealbata
Prairie Alumroot
Heuchera richardsonii
Prairie Beardtongue
Penstemon cobaea
Prairie Blazing Star
Liatris pycnostachya
Prairie Coneflower
Ratibida columnifera
Prairie Cordgrass
Spartina pectinata
Prairie Crabapple
Malus ioensis
Prairie Dropseed
Sporobolus heterolepis
Prairie Goldenpea
Thermopsis rhombifolia
Prairie Larkspur
Delphinium carolinianum
Prairie Onion
Allium stellatum
Prairie Phlox
Phlox pilosa
Prairie Rosinweed
Silphium terebinthinaceum
Prairie Smoke
Geum triflorum
Prairie Sunflower
Helianthus petiolaris
Prairie Trillium
Trillium recurvatum
Prairie White Fringed Orchid
Platanthera leucophaea
Prickly Ash
Zanthoxylum americanum
Prickly Pear Cactus
Opuntia polyacantha
Prickly Rose
Rosa acicularis
Prostrate Vervain
Verbena bracteata
Purple Bladderwort
Utricularia purpurea
Purple Clematis
Clematis occidentalis
Purple Coneflower
Echinacea purpurea
Purple False Foxglove
Agalinis purpurea
Purple Fringed Orchid
Platanthera psycodes
Purple Locoweed
Oxytropis lambertii
Purple Loosestrife
Lythrum salicaria
Purple Lovegrass
Eragrostis spectabilis
Purple Meadow-rue
Thalictrum dasycarpum
Purple Milkweed
Asclepias purpurascens
Purple Needlegrass
Nassella pulchra
Purple Passionflower
Passiflora incarnata
Purple Pitcher Plant
Sarracenia purpurea
Purple Poppy Mallow
Callirhoe involucrata
Purple Prairie Clover
Dalea purpurea
Purple Saxifrage
Saxifraga oppositifolia
Purple Three-awn
Aristida purpurea
Purple-headed Sneezeweed
Helenium flexuosum
Purple-stemmed Angelica
Angelica atropurpurea
Purpletop
Tridens flavus
Pussy Willow
Salix discolor
Puttyroot Orchid
Aplectrum hyemale
Quackgrass
Elymus repens
Quaking Aspen
Populus tremuloides
Queen Anne's Lace
Daucus carota
Queen of the Prairie
Filipendula rubra
Queen's Cup
Clintonia uniflora
Queen's Delight
Stillingia sylvatica
Ragged Fringed Orchid
Platanthera lacera
Rattlesnake Fern
Botrychium virginianum
Rattlesnake Hawkweed
Hieracium venosum
Rattlesnakemaster
Eryngium yuccifolium
Red Alder
Alnus rubra
Red Baneberry
Actaea rubra
Red Buckeye
Aesculus pavia
Red Chokeberry
Aronia arbutifolia
Red Clover
Trifolium pratense
Red Elderberry
Sambucus racemosa
Red Fescue
Festuca rubra
Red Maple
Acer rubrum
Red Osier Dogwood
Cornus sericea
Red Pine
Pinus resinosa
Red Spruce
Picea rubens
Red Trillium
Trillium erectum
Red Turtlehead
Chelone obliqua
Red-flowering Currant
Ribes sanguineum
Redbay
Persea borbonia
Redroot Pigweed
Amaranthus retroflexus
Reed Canary Grass
Phalaris arundinacea
Rice Cutgrass
Leersia oryzoides
River Birch
Betula nigra
River Oats
Chasmanthium latifolium
Riverbank Grape
Vitis riparia
Rock Elm
Ulmus thomasii
Rock Polypody
Polypodium virginianum
Rock Spikemoss
Selaginella rupestris
Rocky Mountain Bristlecone Pine
Pinus aristata
Rocky Mountain Juniper
Juniperus scopulorum
Rocky Mountain Maple
Acer glabrum
Rocky Mountain Penstemon
Penstemon strictus
Rocky Mountain Sage
Salvia reflexa
Rose Pink
Sabatia angularis
Rose Pogonia
Pogonia ophioglossoides
Rose Verbena
Glandularia canadensis
Rosebay Rhododendron
Rhododendron maximum
Ross's Avens
Geum rossii
Rosy Paintbrush
Castilleja rhexifolia
Rough Bent Grass
Agrostis scabra
Round-leaved Orchid
Platanthera orbiculata
Round-leaved Pyrola
Pyrola rotundifolia
Round-leaved Sundew
Drosera rotundifolia
Round-lobed Hepatica
Anemone americana
Round-lobed Hepatica
Anemone americana
Roundhead Lespedeza
Lespedeza capitata
Roundleaf Goldenrod
Solidago patula
Roundleaf Greenbrier
Smilax rotundifolia
Roundleaf Groundsel
Packera obovata
Royal Catchfly
Silene regia
Royal Fern
Osmunda regalis
Rue Anemone
Thalictrum thalictroides
Russian Olive
Elaeagnus angustifolia
Rusty Woodsia
Woodsia ilvensis
Sacred Datura
Datura wrightii
Sagebrush Mariposa
Calochortus macrocarpus
Saguaro Cactus
Carnegiea gigantea
Salal
Gaultheria shallon
Salmonberry
Rubus spectabilis
Saltgrass
Distichlis spicata
Saltmeadow Cordgrass
Spartina patens
Sand Cherry
Prunus pumila
Sand Live Oak
Quercus geminata
Sand Lovegrass
Eragrostis trichodes
Sand Pine
Pinus clausa
Sandbar Willow
Salix exigua
Sandbar Willow (Interior)
Salix interior
Sargent's Cherry Palm
Pseudophoenix sargentii
Saskatoon Serviceberry
Amelanchier alnifolia
Sassafras
Sassafras albidum
Saw Palmetto
Serenoa repens
Sawtooth Sunflower
Helianthus grosseserratus
Scarlet Beebalm
Monarda didyma
Scarlet Bugler
Penstemon barbatus
Scarlet Fritillary
Fritillaria recurva
Scarlet Gilia
Ipomopsis aggregata
Scarlet Globemallow
Sphaeralcea coccinea
Scarlet Hedgehog Cactus
Echinocereus coccineus
Scarlet Indian Paintbrush
Castilleja coccinea
Scarlet Indigo
Indigofera miniata
Scarlet Oak
Quercus coccinea
Scarlet Rose Mallow
Hibiscus coccineus
Scarlet Sage
Salvia coccinea
Scotch Broom
Cytisus scoparius
Screwbean Mesquite
Prosopis pubescens
Sea Lavender
Limonium carolinianum
Sea-coast Angelica
Angelica lucida
Seacoast Bluestem
Schizachyrium littorale
Seashore Mallow
Kosteletzkya pentacarpos
Seaside Goldenrod
Solidago sempervirens
Seaside Plantain
Plantago maritima
Seaside Spurge
Euphorbia polygonifolia
Sego Lily
Calochortus nuttallii
Sensitive Fern
Onoclea sensibilis
Sensitive Partridge Pea
Chamaecrista nictitans
Sessile Bellwort
Uvularia sessilifolia
Sessile-leaved Tick Trefoil
Desmodium sessilifolium
Shadbush
Amelanchier canadensis
Shagbark Hickory
Carya ovata
Sheep Laurel
Kalmia angustifolia
Shingle Oak
Quercus imbricaria
Shining Firmoss
Huperzia lucidula
Shining Willow
Salix lucida
Shinleaf
Pyrola elliptica
Shooting Star
Primula meadia
Shortleaf Pine
Pinus echinata
Showy Fleabane
Erigeron speciosus
Showy Goldenrod
Solidago speciosa
Showy Jacob's Ladder
Polemonium pulcherrimum
Showy Lady's Slipper
Cypripedium reginae
Showy Milkweed
Asclepias speciosa
Showy Tick Trefoil
Desmodium canadense
Shrubby Cinquefoil
Dasiphora fruticosa
Shrubby St. John's-wort
Hypericum prolificum
Shumard Oak
Quercus shumardii
Sidebells Pyrola
Orthilia secunda
Sideoats Grama
Bouteloua curtipendula
Silk Tassel Bush
Garrya elliptica
Silktop Dalea
Dalea aurea
Silky Dogwood
Cornus amomum
Silky Phacelia
Phacelia sericea
Silver Buffaloberry
Shepherdia argentea
Silver Maple
Acer saccharinum
Silverberry
Elaeagnus commutata
Silverweed
Potentilla anserina
Silvery Lupine
Lupinus argenteus
Sitka Spruce
Picea sitchensis
Sitka Valerian
Valeriana sitchensis
Sky Pilot
Polemonium viscosum
Slash Pine
Pinus elliottii
Slender False Foxglove
Agalinis tenuifolia
Slender Marsh Pink
Sabatia campanulata
Slender Mountain Mint
Pycnanthemum tenuifolium
Slender Nettle
Urtica gracilis
Slimstem Reedgrass
Calamagrostis stricta
Slippery Elm
Ulmus rubra
Small Butterwort
Pinguicula pumila
Small Forget-me-not
Myosotis laxa
Small Whorled Pogonia
Isotria medeoloides
Small-flowered Woodland Star
Lithophragma parviflorum
Small-spike False Nettle
Boehmeria cylindrica
Smallflower Pawpaw
Asimina parviflora
Smooth Aster
Symphyotrichum laevis
Smooth Blue Aster
Symphyotrichum laeve
Smooth Bromegrass
Bromus inermis
Smooth Cordgrass
Spartina alterniflora
Smooth Rose
Rosa blanda
Smooth Solomon's Seal
Polygonatum biflorum
Smooth Sumac
Rhus glabra
Smooth Winterberry
Ilex laevigata
Smooth Witherod
Viburnum nudum
Snow-on-the-mountain
Euphorbia marginata
Snowbrush
Ceanothus velutinus
Soaptree Yucca
Yucca elata
Soapweed Yucca
Yucca glauca
Soapwort Gentian
Gentiana saponaria
Soft Rush
Juncus inflexus
Solomon's Plume
Maianthemum racemosum
Sotol
Dasylirion leiophyllum
Sourwood
Oxydendrum arboreum
Southern Arrowwood
Viburnum recognitum
Southern Bellflower
Campanula divaricata
Southern Crabapple
Malus angustifolia
Southern Magnolia
Magnolia grandiflora
Spanish Bayonet
Yucca aloifolia
Spanish Moss
Tillandsia usneoides
Speckled Alder
Alnus incana
Spicebush
Lindera benzoin
Spinystar Cactus
Escobaria vivipara
Spotted Beebalm
Monarda punctata
Spotted Coralroot
Corallorhiza maculata
Spotted Jewelweed
Impatiens capensis
Spotted Joe Pye Weed
Eutrochium maculatum
Spotted Knapweed
Centaurea stoebe
Spotted Phlox
Phlox maculata
Spotted St. John's-wort
Hypericum punctatum
Spotted Water Hemlock
Cicuta maculata
Spotted Wintergreen
Chimaphila maculata
Spreading Chervil
Chaerophyllum procumbens
Spreading Dogbane
Apocynum androsaemifolium
Spreading Globeflower
Trollius laxus
Spring Beauty
Claytonia virginica
Spring Cress
Cardamine bulbosa
Spring Ladies'-tresses
Spiranthes vernalis
Spring Whitlowgrass
Draba verna
Spurred Anoda
Anoda cristata
St. John's Wort
Hypericum perforatum
Staggerbush
Lyonia mariana
Staghorn Sumac
Rhus typhina
Standing Cypress
Ipomopsis rubra
Starflower
Trientalis borealis
Starry Campion
Silene stellata
Starry False Solomon's Seal
Maianthemum stellatum
Steeplebush
Spiraea tomentosa
Steeplebush
Spiraea tomentosa
Stiff Aster
Ionactis linariifolius
Stiff Clubmoss
Lycopodium annotinum
Stiff Gentian
Gentianella quinquefolia
Stiff Sunflower
Helianthus pauciflorus
Stinging Nettle
Urtica dioica
Stoneroot
Collinsonia canadensis
Stream Orchid
Epipactis gigantea
Streambank Wild Hollyhock
Iliamna rivularis
Striped Coralroot
Corallorhiza striata
Striped Maple
Acer pensylvanicum
Striped Violet
Viola striata
Subalpine Fir
Abies lasiocarpa
Subalpine Larch
Larix lyallii
Sugar Maple
Acer saccharum
Sugar Pine
Pinus lambertiana
Sugarberry
Celtis laevigata
Sugarbowls
Clematis hirsutissima
Sulphur Buckwheat
Eriogonum umbellatum
Summer Grape
Vitis aestivalis
Summersweet
Clethra alnifolia
Superb Penstemon
Penstemon superbus
Swamp Aster
Symphyotrichum puniceum
Swamp Azalea
Rhododendron viscosum
Swamp Bay
Persea palustris
Swamp Chestnut Oak
Quercus michauxii
Swamp Cottonwood
Populus heterophylla
Swamp Dewberry
Rubus hispidus
Swamp Gooseberry
Ribes hirtellum
Swamp Lousewort
Pedicularis lanceolata
Swamp Milkweed
Asclepias incarnata
Swamp Rose
Rosa palustris
Swamp Rose Mallow
Hibiscus grandiflorus
Swamp Rose-mallow
Hibiscus moscheutos
Swamp Saxifrage
Saxifraga pensylvanica
Swamp Thistle
Cirsium muticum
Swamp White Oak
Quercus bicolor
Sweet Acacia
Vachellia farnesiana
Sweet Birch
Betula lenta
Sweet Coneflower
Rudbeckia subtomentosa
Sweet Crabapple
Malus coronaria
Sweet Gale
Myrica gale
Sweet Goldenrod
Solidago odora
Sweet Joe Pye Weed
Eutrochium purpureum
Sweet Pitcher Plant
Sarracenia rubra
Sweetbay Magnolia
Magnolia virginiana
Sweetfern
Comptonia peregrina
Sweetgrass
Hierochloe odorata
Sweetgum
Liquidambar styraciflua
Switchgrass
Panicum virgatum
Table Mountain Pine
Pinus pungens
Tall Agrimony
Agrimonia gryposepala
Tall Buttercup
Ranunculus acris
Tall Cinquefoil
Potentilla arguta
Tall Coreopsis
Coreopsis tripteris
Tall Fescue
Schedonorus arundinaceus
Tall Goldenrod
Solidago altissima
Tall Ironweed
Vernonia gigantea
Tall Meadow-rue
Thalictrum pubescens
Tall Thistle
Cirsium altissimum
Tamarack
Larix laricina
Tansy Ragwort
Jacobaea vulgaris
Tapered Rosette Grass
Dichanthelium acuminatum
Tapertip Rush
Juncus acuminatus
Teddy Bear Cholla
Cylindropuntia bigelovii
Tenpetal Blazingstar
Mentzelia decapetala
Texas Black Walnut
Juglans microcarpa
Texas Bluebonnet
Lupinus texensis
Texas Honey Locust
Gleditsia texensis
Texas Live Oak
Quercus fusiformis
Texas Mountain Laurel
Sophora secundiflora
Texas Rainbow Cactus
Echinocereus dasyacanthus
Texas Redbud
Cercis canadensis var. texensis
Texas Sabal Palm
Sabal mexicana
Texas Sacahuista
Nolina texana
Texas Sleepydaisy
Xanthisma texanum
Thimbleberry
Rubus parviflorus
Thinleaf Huckleberry
Vaccinium membranaceum
Thompson's Yucca
Yucca thompsoniana
Three-flowered Melic
Melica nitens
Three-toothed Cinquefoil
Potentilla tridentata
Threeleaf Foamflower
Tiarella trifoliata
Threelobe False Mallow
Malvastrum coromandelianum
Timothy
Phleum pratense
Toadshade Trillium
Trillium sessile
Torrey Pine
Pinus torreyana
Torrey Yucca
Yucca torreyi
Trailing Arbutus
Epigaea repens
Trailing Wild Bean
Strophostyles helvula
Tree Cholla
Cylindropuntia imbricata
Tree Clubmoss
Lycopodium obscurum
Trumpet Creeper
Campsis radicans
Tuberous White Water-lily
Nymphaea tuberosa
Tufted Evening Primrose
Oenothera caespitosa
Tufted Hairgrass
Deschampsia cespitosa
Tulip Prickly Pear
Opuntia phaeacantha
Tulip Tree
Liriodendron tulipifera
Turk's Cap Lily
Lilium superbum
Turk's Head Cactus
Ferocactus hamatacanthus
Turkey Oak
Quercus laevis
Turkey Tangle
Lippia nodiflora
Tussock Cottongrass
Eriophorum vaginatum
Tussock Sedge
Carex stricta
Twinberry Honeysuckle
Lonicera involucrata
Twinflower
Linnaea borealis
Twinleaf
Jeffersonia diphylla
Two-leaved Bishop's Cap
Mitella diphylla
Two-leaved Toothwort
Cardamine diphylla
Umbrella Magnolia
Magnolia tripetala
Utah Agave
Agave utahensis
Utah Penstemon
Penstemon utahensis
Valley Oak
Quercus lobata
Veiny Pea
Lathyrus venosus
Velvet-leaf Blueberry
Vaccinium myrtilloides
Velvetleaf
Abutilon theophrasti
Venus Flytrap
Dionaea muscipula
Venus' Looking Glass
Triodanis perfoliata
Vernal Witch Hazel
Hamamelis vernalis
Vine Maple
Acer circinatum
Violet Wood Sorrel
Oxalis violacea
Virgin's Bower
Clematis virginiana
Virginia Bluebells
Mertensia virginica
Virginia Chain Fern
Woodwardia virginica
Virginia Creeper
Parthenocissus quinquefolia
Virginia Marsh St. John's-wort
Triadenum virginicum
Virginia Mountain Mint
Pycnanthemum virginianum
Virginia Pine
Pinus virginiana
Virginia Salt Marsh Mallow
Kosteletzkya virginica
Virginia Spiderwort
Tradescantia virginiana
Virginia Waterleaf
Hydrophyllum virginianum
Walking Fern
Asplenium rhizophyllum
Water Avens
Geum rivale
Water Clover
Marsilea quadrifolia
Water Horsetail
Equisetum fluviatile
Water Hyacinth
Eichhornia crassipes
Water Locust
Gleditsia aquatica
Water Oak
Quercus nigra
Water Parsnip
Sium suave
Water Plantain
Alisma plantago-aquatica
Water Sedge
Carex aquatilis
Water Shield
Brasenia schreberi
Water Smartweed
Persicaria amphibia
Water Spangles
Salvinia minima
Water Spider Orchid
Habenaria repens
Water Stargrass
Heteranthera dubia
Water Tupelo
Nyssa aquatica
Watercress
Nasturtium officinale
Wavyleaf Paintbrush
Castilleja applegatei
Wax Myrtle
Morella cerifera
Weeping Spruce
Picea breweriana
Weeping Willow
Salix babylonica
Western Azalea
Rhododendron occidentale
Western Hemlock
Tsuga heterophylla
Western Juniper
Juniperus occidentalis
Western Larch
Larix occidentalis
Western Monkshood
Aconitum columbianum
Western Rattlesnake Plantain
Goodyera oblongifolia
Western Red Cedar
Thuja plicata
Western Redbud
Cercis occidentalis
Western Spiderwort
Tradescantia occidentalis
Western Sunflower
Helianthus occidentalis
Western Sword Fern
Polystichum munitum
Western Trillium
Trillium ovatum
Western White Pine
Pinus monticola
Western Yarrow
Achillea millefolium var. occidentalis
White Ash
Fraxinus americana
White Avens
Geum canadense
White Baneberry
Actaea pachypoda
White Beakrush
Rhynchospora alba
White Clover
Trifolium repens
White Crownbeard
Verbesina virginica
White Fawn Lily
Erythronium oregonum
White Fir
Abies concolor
White Grass
Leersia virginica
White Heath Aster
Symphyotrichum ericoides
White Meadowsweet
Spiraea alba
White Oak
Quercus alba
White Prairie Clover
Dalea candida
White Sagebrush
Artemisia ludoviciana
White Snakeroot
Ageratina altissima
White Spruce
Picea glauca
White Sweet Clover
Melilotus albus
White Trout Lily
Erythronium albidum
White Turtlehead
Chelone glabra
White Vervain
Verbena urticifolia
White Wild Indigo
Baptisia alba
White Wild Indigo
Baptisia leucantha
White Wood Aster
Eurybia divaricata
White-flowered Rhododendron
Rhododendron albiflorum
White-tinged Sedge
Carex albicans
White-topped Pitcher Plant
Sarracenia leucophylla
Whitebark Pine
Pinus albicaulis
Whorled Milkweed
Asclepias verticillata
Whorled Milkwort
Polygala verticillata
Whorled Tickseed
Coreopsis verticillata
Widgeongrass
Ruppia maritima
Widow's Cross
Sedum pulchellum
Wild Basil
Clinopodium vulgare
Wild Bergamot
Monarda fistulosa
Wild Bergenia
Eryngium yuccifolium
Wild Blue Lupine
Lupinus perennis
Wild Blue Phlox
Phlox divaricata
Wild Chive
Allium schoenoprasum
Wild Garlic
Allium canadense
Wild Geranium
Geranium maculatum
Wild Ginger
Asarum canadense
Wild Hyacinth
Camassia scilloides
Wild Hydrangea
Hydrangea arborescens
Wild Leek
Allium tricoccum
Wild Mint
Mentha arvensis
Wild Monkshood
Aconitum uncinatum
Wild Parsnip
Pastinaca sativa
Wild Pink
Silene caroliniana
Wild Potato Vine
Ipomoea pandurata
Wild Quinine
Parthenium integrifolium
Wild Red Raspberry
Rubus idaeus
Wild Rice
Zizania aquatica
Wild Sage
Lantana involucrata
Wild Sarsaparilla
Aralia nudicaulis
Wild Senna
Senna hebecarpa
Wild Stonecrop
Sedum ternatum
Wild Strawberry
Fragaria virginiana
Wild Yam
Dioscorea villosa
Willow Oak
Quercus phellos
Wineberry
Rubus phoenicolasius
Winged Sumac
Rhus copallinum
Wingstem
Verbesina alternifolia
Winterberry
Ilex verticillata
Wintergreen
Gaultheria procumbens
Witch Hazel
Hamamelis virginiana
Witherod Viburnum
Viburnum cassinoides
Wood Horsetail
Equisetum sylvaticum
Wood Lily
Lilium philadelphicum
Wood Nettle
Laportea canadensis
Wood's Rose
Rosa woodsii
Woodland Sunflower
Helianthus divaricatus
Woolly Bulrush
Scirpus cyperinus
Wrinkleleaf Goldenrod
Solidago rugosa
Yaupon Holly
Ilex vomitoria
Yellow Bell
Fritillaria pudica
Yellow Birch
Betula alleghaniensis
Yellow Bird of Paradise
Caesalpinia gilliesii
Yellow Clintonia
Clintonia borealis
Yellow Fairybells
Disporum lanuginosum
Yellow Flag Iris
Iris pseudacorus
Yellow Fringed Orchid
Platanthera ciliaris
Yellow Giant Hyssop
Agastache nepetoides
Yellow Glacier Lily
Erythronium grandiflorum
Yellow Lady's Slipper
Cypripedium parviflorum
Yellow Mariposa
Calochortus luteus
Yellow Monkeyflower
Erythranthe guttata
Yellow Mountain Saxifrage
Saxifraga aizoides
Yellow Nutsedge
Cyperus esculentus
Yellow Passionflower
Passiflora lutea
Yellow Pitcher Plant
Sarracenia flava
Yellow Pond Lily
Nuphar lutea
Yellow Prairie Violet
Viola nuttallii
Yellow Sedge
Carex flava
Yellow Skunk Cabbage
Lysichiton americanus
Yellow Sweet Clover
Melilotus officinalis
Yellow Trillium
Trillium luteum
Yellow Trout Lily
Erythronium americanum
Yellow Water Buttercup
Ranunculus flabellaris
Yellow Water Lily
Nymphaea mexicana
Yellow Wild Indigo
Baptisia tinctoria
Yellow Wild Indigo
Baptisia sphaerocarpa
Yellowroot
Xanthorhiza simplicissima
Zigzag Goldenrod
Solidago flexicaulis