USDA Forest Service

The U.S. Department of Agriculture Forest Service is a Federal agency that manages public lands in national forests and grasslands. The Forest Service is also the largest forestry research organization in the world, and provides technical and financial assistance to state and private forestry agencies. Gifford Pinchot, the first Chief of the Forest Service, summed up the purpose of the Forest Service—"to provide the greatest amount of good for the greatest amount of people in the long run."

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Subject	Scientific Name	Images
agave	Agave spp.	1
air-potato	Dioscorea bulbifera	7
Allegheny spurge	Pachysandra procumbens	1
alligatorweed	Alternanthera philoxeroides	19
alpine clover	Trifolium dasyphyllum	3
alpine false springparsley	Pseudocymopterus montanus	1
alpine milkvetch	Astragalus alpinus	1
alpine oreoxis	Oreoxis alpina	2
alpine pennycress	Thlaspi montanum	2
alpine sawsepal penstemon	Penstemon glaber var. alpinus	3
alsike clover	Trifolium hybridum	3
American burnweed	Erechtites hieraciifolius	1
American globeflower	Trollius laxus	3
American pasqueflower	Pulsatilla patens	3
American speedwell	Veronica americana	1
American squawroot	Conopholis americana	2
American trailplant	Adenocaulon bicolor	1
American vetch	Vicia americana	2
anisescented goldenrod	Solidago odora	1
annual pricklepoppy	Argemone polyanthemos	2
Appalachian barren strawberry	Waldsteinia fragarioides	1
arctic alpine forget-me-not	Eritrichium nanum aretioides	1
arctic alpine forget-me-not	Eritrichium nanum var. aretioides	1
arctic yellow violet	Viola biflora	2
arrowleaf balsamroot	Balsamorhiza sagittata	7
arrowleaf buckwheat	Eriogonum compositum	1
arrowleaf ragwort	Senecio triangularis	2
Asiatic dayflower	Commelina communis	2
aspen pea	Lathyrus leucanthus	2
Atamasco lily	Zephyranthes atamasca	1
Austrian fieldcress	Rorippa austriaca	4
ballhead waterleaf	Hydrophyllum capitatum	1
bashful wakerobin	Trillium catesbaei	2
bastard toadflax	Comandra umbellata	3
beardlip penstemon	Penstemon barbatus	2
Bertero's tufted airplant	Guzmania berteriana	1
Bigelow's tansyaster	Machaeranthera bigelovii var. bigelovii	2
bigflower cinquefoil	Potentilla fissa	1
bird vetch	Vicia cracca	6
birdsrape mustard	Brassica rapa	1
bitter root	Lewisia rediviva	2
bittersweet nightshade	Solanum dulcamara	2
black senna	Seymeria cassioides	2
black-eyed susan	Rudbeckia hirta	7
blanketflower	Gaillardia aristata	5
blite goosefoot	Chenopodium capitatum	2
bloodroot	Sanguinaria canadensis	17
Blue Ridge horsebalm	Collinsonia serotina	1
blue-eyed grass	Sisyrinchium spp.	3
bluebead-lily	Clintonia borealis	4
blueflag iris	Iris versicolor	1
bluntseed sweetroot	Osmorhiza depauperata	1
Bonneville shootingstar	Dodecatheon conjugens	1
bouncingbet	Saponaria officinalis	4
bracted lousewort	Pedicularis bracteosa	3
bracted plantain	Plantago aristata	2
Brazilian vervain	Verbena incompta	1
bride's bonnet	Clintonia uniflora	3
British Columbia wildginger	Asarum caudatum	1
Britton's skullcap	Scutellaria brittonii	1
broadbeard beardtongue	Penstemon angustifolius	2
broadleaf arnica	Arnica latifolia	1
broadleaf lupine	Lupinus latifolius	1
broadleaf plantain	Plantago major	4
brook saxifrage	Saxifraga odontoloma	1
broom snakeweed	Gutierrezia sarothrae	3
broomleaf toadflax	Linaria genistifolia	1
broomlike ragwort	Senecio spartioides	2
bull thistle	Cirsium vulgare	4
bullnettle	Cnidoscolus stimulosus	1
bunchberry	Cornus canadensis	1
bunchberry dogwood	Chamaepericlymenum canadense	4
bursting-heart	Euonymus americanus	1
bush morning-glory	Ipomoea leptophylla	2
bush vetchling	Lathyrus eucosmus	2
bushy waterprimrose	Ludwigia alternifolia	1
butterfly milkweed	Asclepias tuberosa	5
caespitose four-nerve daisy	Tetraneuris acaulis var. caespitosa	2
California false-hellebore	Veratrum californicum	4
camphorweed	Heterotheca subaxillaris	3
Canada thistle	Cirsium arvense	1
Canada toadflax	Nuttallanthus canadensis	2
Canadian anemone	Anemone canadensis	1
Canadian lousewort	Pedicularis canadensis	4
Canadian white violet	Viola canadensis	2
cardinalflower	Lobelia cardinalis	1
Carolina bugbane	Trautvetteria caroliniensis	2
Carolina falsedandelion	Pyrrhopappus carolinianus	5
Carolina geranium	Geranium carolinianum	1
Carolina larkspur	Delphinium carolinianum ssp. virescens	2
Carolina lily	Lilium michauxii	1
Chinese yam	Dioscorea polystachya	3
chrysanthemum	Chrysanthemum spp.	2
claspleaf twistedstalk	Streptopus amplexifolius	3
climbing hempweed	Mikania scandens	1
closed bottle gentian	Gentiana andrewsii	2
clustered broomrape	Orobanche fasciculata	1
coastal bedstraw	Galium hispidulum	2
Colorado beardtongue	Penstemon auriberbis	2
Colorado blue columbine	Aquilegia caerulea	8
Colorado false hellebore	Veratrum tenuipetalum	3
Colorado four o'clock	Mirabilis multiflora	2
Columbian monkshood	Aconitum columbianum	5
columbine	Aquilegia spp.	1
comfortroot	Hibiscus aculeatus	2
common cattail	Typha latifolia	2
common chickweed	Stellaria pallida	1
common comfrey	Symphytum officinale	2
common cowparsnip	Heracleum maximum	1
common hempnettle	Galeopsis tetrahit	6
common milkweed	Asclepias syriaca	4
common mullein	Verbascum thapsus	3
common sagewort	Artemisia campestris	1
common sneezeweed	Helenium autumnale	1
common starlily	Leucocrinum montanum	1
common sunflower	Helianthus annuus	2
common tansy	Tanacetum vulgare	10
common woolly sunflower	Eriophyllum lanatum	4
common yarrow	Achillea millefolium	4
coneflower	Dracopis spp.	1
Crandall's beardtongue	Penstemon crandallii	2
cream milkvetch	Astragalus racemosus	1
creeping buttercup	Ranunculus repens	1
creeping lespedeza	Lespedeza repens	2
creeping phlox	Phlox stolonifera	3
creeping sibbaldia	Sibbaldia procumbens	1
croftonweed	Ageratina adenophora	2
crownbeard	Verbesina encelioides	1
crownleaf evening-primrose	Oenothera coronopifolia	1
crownvetch	Securigera varia	14
Cuddy Mountain onion	Allium fibrillum	1
curlycup gumweed	Grindelia squarrosa	1
cutleaf coneflower	Rudbeckia laciniata	1
cutleaf daisy	Erigeron compositus	1
cutleaf evening-primrose	Oenothera laciniata	1
Dailey's columbine	Aquilegia caerulea daileyae	1
Dakota mock vervain	Glandularia bipinnatifida var. ciliata	2
damesrocket	Hesperis matronalis	3
dandelion	Taraxacum officinale	4
dandelion	Taraxacum spp.	1
darkthroat shootingstar	Dodecatheon pulchellum	3
darkwoods violet	Viola orbiculata	1
Davidson's penstemon	Penstemon davidsonii	2
desert paintbrush	Castilleja angustifolia dubia	1
desert princesplume	Stanleya pinnata	2
desert ragwort	Senecio eremophilus	3
diamondleaf saxifrage	Saxifraga rhomboidea	2
diffuse knapweed	Centaurea diffusa	1
dogfennel	Eupatorium capillifolium	2
dotted gayfeather	Liatris punctata	2
Douglas' dustymaiden	Chaenactis douglasii	2
downy lobelia	Lobelia puberula	2
Drummond rattlebush	Sesbania drummondii	1
Drummond's milkvetch	Astragalus drummondii	1
dutchman's breeches	Dicentra cucullaria	5
dwarf hesperochiron	Hesperochiron pumilus	1
dwarf lousewort	Pedicularis centranthera	2
dwarf mountain ragwort	Senecio fremontii	1
dwarf palmetto	Sabal minor	3
dwarf phlox	Phlox condensata	2
dwarf purple monkeyflower	Mimulus nanus	1
early bluetop fleabane	Erigeron vetensis	2
early St. Johnswort	Hypericum nudiflorum	1
eastern false rue anemone	Enemion biternatum	4
eastern showy aster	Eurybia conspicua	1
elegant cinquefoil	Potentilla concinna	2
elegant mariposa lily	Calochortus elegans	1
elephanthead lousewort	Pedicularis groenlandica	3
elephantsfoot	Elephantopus tomentosus	1
elkweed	Frasera speciosa	3
eltrot	Heracleum sphondylium	4
European sticktight	Lappula squarrosa	1
fairy slipper	Calypso bulbosa	3
fall hawkbit	Leontodon autumnalis	1
false chamomile	Tripleurospermum perforatum	1
false flowering spurge	Euphorbia pubentissima	1
feathery false lily of the valley	Maianthemum racemosum ssp. racemosum	4
felwort	Swertia perennis	2
Fendler's cowbane	Oxypolis fendleri	2
Fendler's meadow-rue	Thalictrum fendleri	3
Fendler's ragwort	Senecio fendleri	2
Fendler's sandwort	Arenaria fendleri	1
Fendler's waterleaf	Hydrophyllum fendleri	1
fernleaf yarrow	Achillea filipendulina	2
fiddleleaf hawksbeard	Crepis runcinata	1
field bindweed	Convolvulus arvensis	10
field chickweed	Cerastium arvense	2
field horsetail	Equisetum arvense	2
field pepperweed	Lepidium campestre	1
fineleaf hymenopappus	Hymenopappus filifolius	2
fireweed	Chamerion angustifolium	5
fivenerve helianthella	Helianthella quinquenervis	2
flixweed	Descurainia sophia	5
foothill bladderpod	Lesquerella ludoviciana	2
foxglove	Digitalis purpurea	3
fragrant bedstraw	Galium triflorum	1
fringed grass of Parnassus	Parnassia fimbriata	1
fringed grass of Parnassus	Parnassia fimbriata var. fimbriata	3
front range beardtongue	Penstemon virens	1
front range twinpod	Physaria bellii	2
Gairdner's beardtongue	Penstemon gairdneri	1
garden vetch	Vicia sativa nigra	2
garlic mustard	Alliaria petiolata	38
gaywings	Polygala paucifolia	1
germander beardtongue	Penstemon teucrioides	1
giant lousewort	Pedicularis procera	3
giant red Indian paintbrush	Castilleja miniata	3
giant reed	Arundo donax	10
golden draba	Draba aurea	1
golden tickseed	Coreopsis tinctoria var. tinctoria	1
goldenweed	Croptilon divaricatum	1
goosefoot violet	Viola purpurea	1
graceful buttercup	Ranunculus inamoenus	2
grassy deathcamas	Zigadenus venenosus var. gramineus	1
Gray's angelica	Angelica grayi	1
Gray's biscuitroot	Lomatium grayi	4
graylocks four-nerve daisy	Tetraneuris grandiflora	2
Great Plains yucca	Yucca glauca	5
greater fringed gentian	Gentianopsis crinita	2
greater purple fringed orchid	Platanthera grandiflora	3
greater tickseed	Coreopsis major	1
green false-hellebore	Veratrum viride	1
green fringed orchid	Platanthera lacera	1
Gunnison's mariposa lily	Calochortus gunnisonii	2
hairy cat's ear	Hypochaeris radicata	4
hairy clematis	Clematis hirsutissima	1
hairy evening-primrose	Oenothera villosa ssp. strigosa	2
hairy false goldenaster	Heterotheca villosa	2
hairy white oldfield aster	Symphyotrichum pilosum var. pilosum	1
Hall's beardtongue	Penstemon hallii	1
harebell	Campanula rotundifolia	1
harsh Indian paintbrush	Castilleja hispida	2
Hayden's Indian paintbrush	Castilleja haydenii	1
heartleaf arnica	Arnica cordifolia	3
heartleaf bittercress	Cardamine cordifolia	3
heartleaf springbeauty	Claytonia cordifolia	1
helmet flower	Scutellaria integrifolia	2
hemp dogbane	Apocynum cannabinum	2
hibiscus	Hibiscus spp.	1
hoary groundsel	Packera werneriifolia	2
Holm's ragwort	Senecio amplectens var. holmii	1
hookedspur violet	Viola adunca	4
Hooker's balsamroot	Balsamorhiza hookeri	2
Hooker's sandwort	Arenaria hookeri	2
horsemint	Blephilia ciliata	2
Indianpipe	Monotropa uniflora	6
inflated grasswidow	Olsynium douglasii var. inflatum	1
iris	Iris spp.	2
Jacob's-ladder	Polemonium pulcherrimum	1
Jacob's-ladder	Polemonium pulcherrimum ssp. delicatum	1
James' buckwheat	Eriogonum jamesii	2
James' telesonix	Telesonix jamesii	1
Japanese knotweed	Fallopia japonica	35
Jerusalem artichoke	Helianthus tuberosus	2
jimsonweed	Datura stramonium	2
lace lipfern	Cheilanthes gracillima	1
lacy tansyaster	Machaeranthera pinnatifida	1
ladies'-tresses	Spiranthes spp.	1
Lambert crazyweed	Oxytropis lambertii	4
lambstongue ragwort	Senecio integerrimus	1
lanceleaf blanketflower	Gaillardia aestivalis	3
lanceleaf figwort	Scrophularia lanceolata	1
large yellow vetch	Vicia grandiflora	1
largeflower Townsend daisy	Townsendia grandiflora	2
largehead clover	Trifolium macrocephalum	1
larkspur	Delphinium spp.	1
leafy spurge	Euphorbia esula	2
ledge stonecrop	Rhodiola integrifolia	3
lesser snakeroot	Ageratina aromatica var. aromatica	1
lesser spikemoss	Selaginella densa	1
lily	Lilium spp.	5
lilyturf	Liriope spp.	6
littleflower alumroot	Heuchera parviflora	1
littleflower penstemon	Penstemon procerus	1
low larkspur	Delphinium nuttallianum	1
lupine	Lupinus spp.	1
manyflowered stoneseed	Lithospermum multiflorum	2
mariposa lily	Calochortus spp.	2
Maryland goldenaster	Chrysopsis mariana	4
Maryland meadowbeauty	Rhexia mariana	1
mayapple	Podophyllum peltatum	5
maypop passionflower	Passiflora incarnata	2
meadow hawkweed	Hieracium caespitosum	12
meadowbeauty	Rhexia virginica	1
miner's candle	Cryptantha virgata	2
Minnesota trout lily	Erythronium propullans	3
monkeygrass	Liriope muscari	14
moss campion	Silene acaulis	1
mountain deathcamas	Zigadenus elegans	1
mountain deathcamas	Zigadenus elegans ssp. elegans	2
mountain dryas	Dryas octopetala	2
mountain goldenbanner	Thermopsis montana	1
mountain lady's slipper	Cypripedium montanum	2
mountain larkspur	Delphinium ramosum	2
mountain monardella	Monardella odoratissima	1
mountain springparsley	Cymopterus montanus	2
mountain thistle	Cirsium scopulorum	3
mule-ears	Wyethia amplexicaulis	4
musk thistle	Carduus nutans	7
muskflower	Mimulus moschatus	1
muskroot	Adoxa moschatellina	1
narrowleaf blueeyed-grass	Sisyrinchium angustifolium	1
narrowleaf hawksbeard	Crepis tectorum	3
narrowleaf spring-beauty	Claytonia virginica	3
Nevada pea	Lathyrus lanszwertii var. leucanthus	1
New Mexico groundsel	Packera neomexicana var. neomexicana	1
Newberry's hymenopappus	Hymenopappus newberryi	1
nightflowering catchfly	Silene noctiflora	1
nodding onion	Allium cernuum	2
nodding ragwort	Senecio bigelovii var. bigelovii	1
nodding trillium	Trillium cernuum	1
northern bedstraw	Galium boreale	1
northern green orchid	Platanthera hyperborea	2
Nuttall's linanthus	Linanthus nuttallii	1
Nuttall's oxytrope	Oxytropis multiceps	1
Nuttall's violet	Viola nuttallii	2
old man's whiskers	Geum triflorum var. triflorum	3
orange agoseris	Agoseris aurantiaca	1
orange hawkweed	Hieracium aurantiacum	21
orange sneezeweed	Hymenoxys hoopesii	3
Oregon fleabane	Erigeron speciosus	2
Oregon yampah	Perideridia oregana	1
ornamental jewelweed	Impatiens glandulifera	4
oxeye	Heliopsis helianthoides	3
oxeye daisy	Leucanthemum vulgare	7
Pacific onion	Allium validum	1
pale agoseris	Agoseris glauca	2
pansy	Viola x wittrockiana	1
Parry's bellflower	Campanula parryi	2
Parry's dwarf-sunflower	Helianthella parryi	2
Parry's goldenrod	Oreochrysum parryi	3
Parry's milkvetch	Astragalus parryi	2
Parry's primrose	Primula parryi	3
parsnipflower buckwheat	Eriogonum heracleoides	2
partridgepea	Chamaecrista fasciculata	2
pearly everlasting	Anaphalis margaritacea	3
perennial lupine	Lupinus perennis	4
perennial sowthistle	Sonchus arvensis	6
pineapple-weed	Matricaria discoidea	4
pinesap	Monotropa hypopithys	2
pinewoods horkelia	Horkelia fusca	1
pineywoods geranium	Geranium caespitosum	2
pingue rubberweed	Hymenoxys richardsonii	1
pink lady's-slipper	Cypripedium acaule	4
pinkfairies	Clarkia pulchella	2
pinkscale blazing star	Liatris elegans	1
pioneer violet	Viola glabella	1
Piper's anemone	Anemone piperi	1
pitcherplants	Sarracenia spp.	6
plains blackfoot	Melampodium leucanthum	1
plumed clover	Trifolium plumosum	1
Porter's licorice-root	Ligusticum porteri	3
prairie bluebells	Mertensia lanceolata	1
prairie evening-primrose	Oenothera albicaulis	1
prairie flax	Linum lewisii	3
prairie spiderwort	Tradescantia occidentalis	2
prairie sunflower	Helianthus petiolaris	1
prairie thermopsis	Thermopsis rhombifolia	2
prickly lettuce	Lactuca serriola	4
prostrate knotweed	Polygonum aviculare	1
purple cudweed	Gamochaeta purpurea	1
purple false foxglove	Agalinis purpurea	1
purple groundcherry	Quincula lobata	3
purple loosestrife	Lythrum salicaria	8
purple monkeyflower	Mimulus lewisii	3
Pursh's wallflower	Erysimum capitatum var. purshii	1
rabbittobacco	Pseudognaphalium obtusifolium ssp. obtusifolium	1
ragleaf bahia	Bahia dissecta	2
ragweed sagebrush	Artemisia franserioides	1
Rainier pleated gentian	Gentiana calycosa	4
ram's head lady's slipper	Cypripedium arietinum	1
ramp	Allium tricoccum	6
red baneberry	Actaea rubra	5
red baneberry	Actaea rubra ssp. arguta	1
red clover	Trifolium pratense	4
red trillium	Trillium erectum	2
redhot poker	Kniphofia uvaria	1
redpod stonecrop	Rhodiola rhodantha	1
rice button aster	Symphyotrichum dumosum var. dumosum	2
Richardson's geranium	Geranium richardsonii	3
rock clematis	Clematis columbiana	1
rock onion	Allium macrum	1
Rocky Mountain buttercup	Ranunculus macauleyi	4
Rocky Mountain fringed gentian	Gentianopsis thermalis	3
Rocky Mountain goldenrod	Solidago multiradiata	2
Rocky Mountain groundsel	Packera streptanthifolia	2
Rocky Mountain Indian parsley	Aletes anisatus	2
Rocky Mountain iris	Iris missouriensis	1
rockyscree false goldenaster	Heterotheca fulcrata	1
rosy pussytoes	Antennaria rosea	3
rough fleabane	Erigeron strigosus	1
roughfruit fairybells	Disporum trachycarpum	3
roughseed clammyweed	Polanisia dodecandra	1
round-lobe hepatica	Anemone americana	3
round-lobed hepatica	Hepatica nobilis var. obtusa	1
roundleaf alumroot	Heuchera cylindrica	1
roundleaf sundew	Drosera rotundifolia	1
roundtip twinpod	Physaria vitulifera	2
rue anemone	Thalictrum thalictroides	4
sagebrush buttercup	Ranunculus glaberrimus	1
sagebrush mariposa lily	Calochortus macrocarpus	1
Sakhalin knotweed	Fallopia sachalinensis	2
sanddune wallflower	Erysimum capitatum	2
sanddune wallflower	Erysimum capitatum var. capitatum	2
savannah meadowbeauty	Rhexia alifanus	1
scabland fleabane	Erigeron bloomeri	1
scarlet beebalm	Monarda didyma	1
scarlet gaura	Gaura coccinea	1
scarlet gilia	Ipomopsis aggregata	4
scarlet globemallow	Sphaeralcea coccinea	1
scarlet rosemallow	Hibiscus coccineus	1
scentbottle	Platanthera dilatata	2
scentbottle	Platanthera dilatata var. dilatata	1
Scott's clematis	Clematis hirsutissima var. scottii	2
scrambled eggs	Corydalis aurea	2
seep monkeyflower	Mimulus guttatus	3
sericea lespedeza	Lespedeza cuneata	11
shaggy blazing star	Liatris pilosa	1
shaggy fleabane	Erigeron pumilus	3
sharp-lobed hepatica	Hepatica nobilis var. acuta	5
shooting star	Dodecatheon spp.	2
shortleaf lobelia	Lobelia brevifolia	1
showy alpine ragwort	Senecio amplectens var. amplectens	2
showy lady's slipper	Cypripedium reginae	1
showy milkweed	Asclepias speciosa	1
showy orchid	Galearis spectabilis	2
shrubby lespedeza	Lespedeza bicolor	12
sickletop lousewort	Pedicularis racemosa	2
sidebells penstemon	Penstemon secundiflorus	3
silky phacelia	Phacelia sericea	3
silky sophora	Sophora nuttalliana	1
silver lupine	Lupinus argenteus	1
single delight	Moneses uniflora	4
skunkcabbage	Symplocarpus foetidus	2
slender cinquefoil	Potentilla gracilis	2
slender copperleaf	Acalypha gracilens	1
slender cudweed	Gnaphalium exilifolium	1
slender goldenrod	Euthamia tenuifolia	1
slender lespedeza	Lespedeza virginica	1
small camas	Camassia quamash	1
small spreading pogonia	Cleistes bifaria	1
small yellow lady' s slipper	Cypripedium pubescens	1
small-leaf pussytoes	Antennaria parvifolia	2
snakemouth orchid	Pogonia ophioglossoides	1
soybean	Glycine max	1
spanishneedles	Bidens bipinnata	1
spearleaf stonecrop	Sedum lanceolatum	3
spearmint	Mentha spicata	2
spider milkweed	Asclepias asperula	2
spiked hoarypea	Tephrosia spicata	2
spiny sowthistle	Sonchus asper	1
splitleaf groundsel	Packera dimorphophylla dimorphophylla	1
splitleaf Indian paintbrush	Castilleja rhexiifolia	1
spotted fritillary	Fritillaria atropurpurea	1
spotted knapweed	Centaurea stoebe	4
spotted knapweed	Centaurea stoebe ssp. micranthos	10
spotted wintergreen	Chimaphila maculata	2
spreadfruit goldenbanner	Thermopsis divaricarpa	1
spreading dogbane	Apocynum androsaemifolium	3
sprucefir fleabane	Erigeron eximius	2
squirrel corn	Dicentra canadensis	1
St. Peterswort	Hypericum crux-andreae	1
star chickweed	Stellaria pubera	1
star-flower	Trientalis borealis	3
starry false lily of the valley	Maianthemum stellatum	5
starry rosinweed	Silphium asteriscus	1
stemless Townsend daisy	Townsendia exscapa	1
sticky polemonium	Polemonium viscosum	1
sticky purple geranium	Geranium viscosissimum	2
stiff greenthread	Thelesperma filifolium	1
stiff ticktrefoil	Desmodium obtusum	1
stinking chamomile	Anthemis cotula	1
streambank wild hollyhock	Iliamna rivularis	2
subalpine buttercup	Ranunculus eschscholtzii	1
subalpine fleabane	Erigeron peregrinus	2
subalpine gumweed	Grindelia subalpina	2
sudetic lousewort	Pedicularis sudetica ssp. scopulorum	1
sulphur Indian paintbrush	Castilleja sulphurea	1
sulphur lupine	Lupinus sulphureus	1
sulphur-flower buckwheat	Eriogonum umbellatum	2
sulphur-flower buckwheat	Eriogonum umbellatum var. majus	2
summer coralroot	Corallorrhiza maculata	2
sunflower mule-ears	Wyethia helianthoides	3
sweet joepyeweed	Eupatorium purpureum	1
sweet wakerobin	Trillium vaseyi	1
sweetfern	Comptonia peregrina	4
tahoka daisy	Machaeranthera tanacetifolia	2
tailcup lupine	Lupinus caudatus	2
tall blacktip ragwort	Senecio atratus	2
tall fringed bluebells	Mertensia ciliata	2
tall groundwel	Senecio hydrophiloides	1
tall larkspur	Delphinium barbeyi	3
tall lettuce	Lactuca canadensis	1
tall ragwort	Senecio serra	1
tansy ragwort	Senecio jacobaea	7
tasselflower brickellbush	Brickellia grandiflora	1
tenpetal stickleaf	Mentzelia decapetala	1
Texas bluebonnet	Lupinus subcarnosus	1
textile onion	Allium textile	2
thistle	Cirsium spp.	3
Thunberg lespedeza	Lespedeza thunbergii	3
tiny vetch	Vicia hirsuta	1
tobacco root	Valeriana edulis	1
trailing fleabane	Erigeron flagellaris	1
trailing lespedeza	Lespedeza procumbens	1
trillium	Trillium spp.	2
true forget-me-not	Myosotis scorpioides	5
tuber starwort	Pseudostellaria jamesiana	1
tuberous grasspink	Calopogon tuberosus var. tuberosus	1
tuberous vervain	Verbena rigida	1
tufted evening primrose	Oenothera cespitosa ssp. macroglottis	1
tufted evening-primrose	Oenothera cespitosa	3
tufted milkvetch	Astragalus adsurgens	2
turk's-cap lily	Lilium superbum	3
twinflower	Linnaea borealis	2
twogrooved milkvetch	Astragalus bisulcatus	1
upright prairie coneflower	Ratibida columnifera	3
vanda orchids	Vanda spp.	1
varileaf phacelia	Phacelia heterophylla	1
veiny dock	Rumex venosus	3
Venice mallow	Hibiscus trionum	1
Venus flytrap	Dionaea muscipula	3
Venus penstemon	Penstemon venustus	1
Virginia groundcherry	Physalis virginiana	1
Virginia pepperweed	Lepidium virginicum	2
Virginia strawberry	Fragaria virginiana ssp. glauca	1
wall lettuce	Mycelis muralis	1
wallflower mustard	Erysimum cheiranthoides	1
Washington lily	Lilium washingtonianum	3
wavyleaf Indian paintbrush	Castilleja applegatei	2
wavyleaf thistle	Cirsium undulatum	1
western columbine	Aquilegia formosa	5
western dock	Rumex aquaticus var. fenestratus	2
western Indian paintbrush	Castilleja occidentalis	2
western rattlesnake plantain	Goodyera oblongifolia	1
western red columbine	Aquilegia elegantula	2
western salsify	Tragopogon dubius	6
western springbeauty	Claytonia rosea	2
Whipple's penstemon	Penstemon whippleanus	4
white checkerbloom	Sidalcea candida	1
white clover	Trifolium repens	4
white locoweed	Oxytropis sericea	2
white mariposa lily	Calochortus eurycarpus	1
white marsh marigold	Caltha leptosepala	4
white mustard	Sinapis alba	3
white prairieclover	Petalostemum candidum	1
White River coraldrops	Besseya plantaginea	1
white trillium	Trillium grandiflorum	5
white trout lily	Erythronium albidum	8
white violet	Viola renifolia	2
whitish gentian	Gentiana algida	2
wholeleaf Indian paintbrush	Castilleja integra	3
wild bergamot	Monarda fistulosa	4
wild geranium	Geranium maculatum	1
wild parsnip	Pastinaca sativa	1
wild sarsaparilla	Aralia nudicaulis	3
wild strawberry	Fragaria virginiana	3
winged buckwheat	Eriogonum alatum	1
wintergreen	Gaultheria procumbens	2
wood anemone	Anemone quinquefolia	1
wood lily	Lilium philadelphicum	7
woodland pinedrops	Pterospora andromedea	2
woodland strawberry	Fragaria vesca	2
woolly cinquefoil	Potentilla hippiana	1
woolly mule-ears	Wyethia mollis	1
woollypod milkvetch	Astragalus purshii	1
Wooton's ragwort	Senecio wootonii	2
wormleaf stonecrop	Sedum stenopetalum	1
Wyoming Indian paintbrush	Castilleja linariifolia	2
yankeeweed	Eupatorium compositifolium	1
yellow avalanche-lily	Erythronium grandiflorum	2
yellow avens	Geum aleppicum	1
yellow evening-primrose	Oenothera flava	1
yellow fieldcress	Rorippa sylvestris	1
yellow lady's slipper	Cypripedium parviflorum	8
yellow marsh marigold	Caltha palustris	15
yellow owl's-clover	Orthocarpus luteus	1
yellow sweetclover	Melilotus officinalis	6
yellow thistle	Cirsium horridulum	2
yellow toadflax	Linaria vulgaris	8
yellow trout lily	Erythronium americanum	6
yellowdot saxifrage	Saxifraga bronchialis	2