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Name of Above Organism
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Acer platanoides (Norway Maple)
Acer saccharum (Sugar Maple)
Aesculus glabra (Ohio Buckeye)
Agrimonia striata (Woodland Grooveburr)
Agropyron cristatum subsp. desertorum (desert wheatgrass)
Agrostis mertensii (Northern Bent)
Agrostis perennans (upland bentgrass)
Agrostis scabra (rough bentgrass)
Ailanthus altissima (Tree-of-Heaven)
Alliaria petiolata (Garlic-Mustard)
Allium schoenoprasum (Wild Chives)
Alnus viridis
Alopecurus aequalis (shortawn foxtail)
Alopecurus geniculatus (water foxtail)
Alopecurus magellanicus (Alpine Meadow-Foxtail)
Alopecurus pratensis (Field Meadow-Foxtail)
Amaranthus tuberculatus (Rough-Fruit Amaranth)
Ambrosia artemisiifolia (Annual Ragweed)
Ambrosia grayi (Woolly-Leaf Burr-Ragweed)
Ambrosia trifida (Texan great ragweed)
Amelanchier alnifolia (serviceberry)
Ammannia latifolia (Pink Redstem)
Ammannia robusta (Grand Redstem)
Amorpha nana (Fragrant Indigo-Bush)
Amphiscirpus nevadensis (Nevada Club-Rush)
Amsinckia menziesii (Menzies' fiddleneck)
Andropogon gerardi (Big Bluestem)
Androsace chamaejasme (Sweet-Flower Rock-Jasmine)
Anemone cylindrica (Long-Head Thimbleweed)
Anemone quinquefolia var. quinquefolia (Nightcaps)
Angelica pinnata (Small-Leaf Angelica)
Anoda cristata (Crested Anoda)
Antennaria corymbosa (Flat-Top Pussytoes)
Antennaria howellii (Small Pussytoes)
Apios americana (Groundnut)
Aquilegia chrysantha (golden columbine)
Aquilegia coerulea (Rocky Mountain columbine)
Arenaria lanuginosa var. saxosa (spreading sandwort)
Argemone polyanthemos (White Prickly-Poppy)
Aristida adscensionis (sixweeks threeawn)
Armeria maritima (Sea Thrift)
Arnica mollis (Cordilleran Leopardbane)
Arrhenatherum elatius (tall oatgrass)
Artemisia absinthium (Oldman)
Artemisia campestris subsp. borealis (Boreal Wormwood)
Artemisia norvegica (Boreal Sagebrush)
Artemisia scopulorum (Alpine Sagebrush)
Artemisia tridentata subsp. tridentata (basin big sagebrush)
Asclepias engelmanniana (Engelmann's Milkweed)
Asclepias hallii (Hall's Milkweed)
Asclepias incarnata subsp. incarnata (Swamp Milkweed)
Asclepias speciosa (Showy Milkweed)
Asclepias viridiflora (Green Comet Milkweed)
Aster alpinus (Alpine Aster)
Astragalus ceramicus (painted milkvetch)
Astragalus cicer (Chickpea Milk-Vetch)
Astragalus crassicarpus (groundplum milkvetch)
Astragalus hallii (Hall's milkvetch)
Athyrium alpestre var. americanum (American Alpine Lady Fern)
Athyrium filix-femina (Lady Fern)
Atriplex argentea (silverscale saltbush)
Atriplex canescens (fourwing saltbush)
Azolla cristata (Crested Mosquito Fern)
Barbarea vulgaris (winter cress)
Bassia hyssopifolia (fivehorn smotherweed)
Berteroa incana (Hoary False Madwort)
Bidens laevis (smooth beggartick)
Bistorta bistortoides (American Bistort)
Bolboschoenus maritimus subsp. paludosus (Alkali Bulrush)
Bothriochloa bladhii (Australian Beard Grass)
Bothriochloa ischaemum (yellow bluestem)
Botrychium hesperium (Western Moonwort)
Botrypus virginianus (Rattlesnake Fern)
Bouteloua dactyloides (Buffalo Grass)
Bouteloua gracilis (Blue Grama)
Brickellia eupatorioides var. chlorolepis (false boneset)
Brickellia oblongifolia (Mojave brickellbush)
Bromus ciliatus var. richardsonii (fringed brome)
Bromus commutatus (Meadow Brome)
Bromus hordeaceus (Soft Brome)
Buglossoides arvensis (Corn-Gromwell)
Calamagrostis canadensis (Bluejoint)
Calamovilfa longifolia (Prairie Sandreed)
Callitriche palustris (Vernal Water-Starwort)
Caltha leptosepala subsp. leptosepala (white marsh marigold)
Calylophus lavandulifolius (Lavender-Leaf Sundrops)
Calypso bulbosa (Fairy-Slipper Orchid)
Calystegia sepium (Hedge False Bindweed)
Camelina microcarpa (littlepod false flax)
Campanula rotundifolia (Bluebell-of-Scotland)
Campanula uniflora (Arctic Bellflower)
Caragana aurantiaca (Dwarf Peashrub)
Cardamine cordifolia (heartleaf bittercress)
Carex aquatilis (water sedge)
Carex athrostachya (slenderbeak sedge)
Carex atrosquama (Lesser Black-Scale Sedge)
Carex aurea (golden sedge)
Carex bella (Southwestern Showy Sedge)
Carex brevior (shortbeak sedge)
Carex capillaris (Hair-Like Sedge)
Carex ebenea (Ebony Sedge)
Carex echinata (Star Sedge)
Carex engelmannii (Engelmann's Sedge)
Carex foenea var. foenea (dryspike sedge)
Carex nardina (Nard Sedge)
Carex nigricans (Black Alpine Sedge)
Carex norvegica subsp. stevenii (Steven's Sedge)
Carex occidentalis (Western Sedge)
Carex paysonis (Payson's Sedge)
Carex pellita (Woolly Sedge)
Carex petasata (Liddon Sedge)
Carex praegracilis (Clustered Field Sedge)
Carex scirpoidea (Canadian Single-Spike Sedge)
Carex scirpoidea subsp. scirpoidea
Carex simulata (Analogue Sedge)
Carex sprengelii (Long-Beak Sedge)
Carex stipata (Stalk-Grain Sedge)
Carex stricta (Uptight Sedge)
Carex tenuiflora (Sparse-Flower Sedge)
Carex utriculata (Northwest Territory Sedge)
Carya ovata (Shag-Bark Hickory)
Castalis tragus (African daisy)
Castilleja linariifolia (Wyoming Indian paintbrush)
Castilleja sessiliflora (downy paintedcup)
Catabrosa aquatica (water whorlgrass)
Catalpa speciosa (Northern Catalpa)
Cenchrus spinifex (Coastal Sandbur)
Centaurea diffusa (White Knapweed)
Centaurea stoebe (Spotted Knapweed)
Cerastium brachypodum (shortstalk chickweed)
Cerastium fontanum (Common Mouse-Ear Chickweed)
Cerastium fontanum subsp. vulgare (Common Mouse-Ear Chickweed)
Chaenactis douglasii (Douglas' dustymaiden)
Chelidonium majus (Greater Celandine)
Chenopodiastrum simplex (Giant-Seed Mock Goosefoot)
Chenopodium capitatum (Strawberry-Blite)
Chenopodium leptophyllum (narrowleaf goosefoot)
Chenopodium pratericola (Desert Goosefoot)
Chloris cucullata (Hooded Windmill Grass)
Circaea alpina (small enchanter's nightshade)
Cirsium tracyi (Tracy's Thistle)
Cirsium undulatum (Wavy-Leaf Thistle)
Cladrastis kentukea (Kentucky Yellow-Wood)
Clematis orientalis (Oriental Virgin's-Bower)
Conium maculatum (Poison-Hemlock)
Conringia orientalis (Hare's-Ear-Mustard)
Corallorhiza wisteriana (Spring Coralroot)
Corispermum americanum (American Bugseed)
Cornus canadensis (Canadian Bunchberry)
Coryphantha vivipara (Arizona spinystar)
Cotoneaster lucidus (Hairy-Stem Cotoneaster)
Crataegus macracantha var. occidentalis (succulent hawthorn)
Crataegus monogyna (English Hawthorn)
Crepis capillaris (Smooth Hawk's-Beard)
Crocanthemum bicknellii (Hoary Frostweed)
Cryptantha cinerea (James' cryptantha)
Cryptantha crassisepala (thicksepal cryptantha)
Cucurbita foetidissima (Missouri Gourd)
Cuscuta gronovii (Scaldweed)
Cylindropuntia imbricata (Tree Cholla)
Cyperus erythrorhizos (Red-Root Flat Sedge)
Cyperus lupulinus subsp. lupulinus (Great Plains Flat Sedge)
Cyperus squarrosus (Awned Flat Sedge)
Cystopteris fragilis (Brittle Bladder Fern)
Danthonia californica (California Wild Oat Grass)
Delphinium bicolor (Flat-Head Larkspur)
Delphinium nuttallianum (Two-Lobe Larkspur)
Descurainia sophia (Herb-Sophia)
Desmanthus illinoensis (Prairie Bundle-Flower)
Dianthus armeria (Deptford Pink)
Dichanthelium acuminatum (Tapered Witch Grass)
Dichanthelium depauperatum (starved panicgrass)
Digitalis purpurea (Purple Foxglove)
Diplachne fusca subsp. fascicularis (Bearded Sprangletop)
Dipsacus fullonum (Fuller's teasel)
Disakisperma dubium (Green-Sprangletop)
Draba oligosperma (Few-Seed Whitlow-Grass)
Draba reptans (Carolina Draba)
Drymaria effusa (Pinewoods Drymary)
Drymocallis arizonica (Arizona cinquefoil)
Dyssodia papposa (Fetid-Marigold)
Eleocharis coloradoensis
Eleocharis obtusa (Blunt Spike-Rush)
Eleocharis parvula (Little-Head Spike-Rush)
Ellisia nyctelea (Aunt Lucy)
Elodea nuttallii (Nuttall's waterweed)
Elymus elongatus (Eurasian Quack Grass)
Elymus elymoides subsp. brevifolius (squirreltail)
Epilobium brachycarpum (Tall Annual Willowherb)
Epilobium hornemannii (Hornemann's Willowherb)
Equisetum arvense (Field Horsetail)
Eragrostis cilianensis (Stink Grass)
Eragrostis curvula (Weeping Love Grass)
Eragrostis hypnoides (Teal Love Grass)
Eragrostis pectinacea (Purple Love Grass)
Eremogone fendleri (Fendler's sandwort)
Ericameria nauseosa var. graveolens (rubber rabbitbrush)
Erigeron annuus (Eastern Daisy Fleabane)
Erigeron eximius (Spruce-Fir Fleabane)
Eriogonum cernuum (nodding buckwheat)
Eriogonum heracleoides (Parsnip-Flower Wild Buckwheat)
Eriogonum microthecum (Slender Wild Buckwheat)
Eriogonum umbellatum (Sulphur-Flower Wild Buckwheat)
Eriogonum umbellatum var. umbellatum
Eriophorum angustifolium (Tall Cotton-Grass)
Erodium cicutarium (Red-Stem Stork's-Bill)
Erysimum capitatum (Sand-Dune Wallflower)
Erysimum cheiranthoides (Worm-Seed Wallflower)
Erysimum repandum (Spreading Wallflower)
Erythranthe guttata (Seep Monkey-Flower)
Euphorbia cyparissias (Cypress Spurge)
Euphorbia fendleri (Fendler's Sandmat)
Euphorbia maculata (Spotted Sandmat)
Euphorbia myrsinites (Myrtle Spurge)
Euphorbia spathulata (Warty Spurge)
Euphorbia virgata (Wolf's-Milk)
Euthamia occidentalis (Western Goldentop)
Festuca arizonica (Arizona Fescue)
Forestiera pubescens (Stretchberry)
Fragaria vesca (Woodland Strawberry)
Fragaria virginiana (Virginia Strawberry)
Fragaria virginiana subsp. glauca (Virginia strawberry)
Fragaria virginiana subsp. platypetala (Virginia strawberry)
Froelichia floridana (Plains Snake-Cotton)
Galinsoga quadriradiata (Shaggy-Soldier)
Galium trifidum (Three-Petal Bedstraw)
Gentiana affinis (Pleated Gentian)
Gentiana fremontii (Moss Gentian)
Gentiana prostrata (Pygmy Gentian)
Gentianella tenella (Dane's dwarf gentian)
Gentianopsis thermalis (Rocky Mountain Fringed-Gentian)
Geranium dissectum (Cut-Leaf Crane's-Bill)
Geranium pusillum (Small-Flower Crane's-Bill)
Geranium viscosissimum (sticky purple geranium)
Geranium viscosissimum var. incisum
Gilia inconspicua (Shy Gily-Flower)
Gilia sinuata (Rosy Gily-Flower)
Glandularia pulchella (South American mock vervain)
Glyceria striata (Tall Manna Grass)
Gnaphalium exilifolium (Slender Cudweed)
Goodyera oblongifolia (Green-Leaf Rattlesnake-Plantain)
Gratiola neglecta (Clammy Hedge-Hyssop)
Gutierrezia microcephala (Small-Head Snakeweed)
Helianthella parryi (Parry's Dwarf-Sunflower)
Helianthella quinquenervis (Nodding Dwarf-Sunflower)
Helianthemum bicknellii (hoary frostweed)
Helianthus ciliaris (Texas-Blueweed)
Heliomeris multiflora (Nevada Showy False Goldeneye)
Heliomeris multiflora var. multiflora (showy goldeneye)
Heracleum maximum (American Cow-Parsnip)
Herrickia glauca var. glauca
Hesperostipa neomexicana (New Mexico Needle Grass)
Heteranthera limosa (Blue Mud-Plantain)
Heterotheca subaxillaris (Camphorweed)
Hieracium caespitosum (Gronovis Hawkweed)
Hordeum jubatum subsp. jubatum (Foxtail barley)
Hordeum murinum subsp. glaucum (smooth barley)
Humulus lupulus var. neomexicanus (common hop)
Hybanthus verticillatus (babyslippers)
Hypericum majus (Greater Canadian St. John's-Wort)
Hypericum scouleri (Scouler's St. Johnswort)
Iliamna rivularis (Streambank Wild Hollyhock)
Ipomopsis aggregata (Scarlet Skyrocket)
Iris pseudacorus (Yellow flag)
Iva axillaris (Deer-Root)
Juncus articulatus (Joint-Leaf Rush)
Juncus balticus (Baltic Rush)
Juncus balticus subsp. ater (mountain rush)
Juncus bufonius (toad rush)
Juncus confusus (Colorado Rush)
Juncus dudleyi (Dudley's Rush)
Juncus marginatus (Bog Rush)
Juncus mertensianus (Duran's Rush)
Juncus nevadensis (Sierra rush)
Juncus saximontanus (Rocky Mountain Rush)
Juncus tenuis (Lesser Poverty Rush)
Juncus torreyi (Torrey's Rush)
Juniperus communis var. depressa (Common Juniper)
Juniperus scopulorum (Rocky Mountain Juniper)
Koeleria pyramidata (Prairie Koeler's Grass)
Krigia biflora (Two-Flower Dwarf-Dandelion)
Lactuca serriola (Prickly Lettuce)
Laennecia schiedeana (Pineland Woolwort)
Lamium amplexicaule (Giraffehead)
Lappula occidentalis var. occidentalis (flatspine stickseed)
Lathyrus laetivirens (Nevada pea)
Lathyrus lanszwertii (Nevada Vetchling)
Lathyrus lanszwertii var. leucanthus (Nevada pea)
Lemna minor (Common Duckweed)
Lemna turionifera (Turion Duckweed)
Lepidium crenatum (Alkaline Pepperwort)
Lepidium draba (Heart-Pod Pepperwort)
Lepidium virginicum (Poorman's-Pepperwort)
Lewisia pygmaea (Sierran Bitter-Root)
Leymus condensatus (Giant Lyme Grass)
Liatris punctata (Dotted Gayfeather)
Linaria dalmatica (Dalmatian Toadflax)
Linum lewisii var. lewisii (prairie flax)
Listera convallarioides (Broad-Lip Twayblade)
Lobelia siphilitica (Great Blue Lobelia)
Lolium perenne (perennial ryegrass)
Lonicera involucrata var. involucrata (twinberry honeysuckle)
Lonicera japonica (Japanese Honeysuckle)
Lotus wrightii (Wright's deervetch)
Lupinus caudatus (Kellogg's Spurred Lupine)
Lupinus sericeus (Pursh's Silky Lupine)
Luzula parviflora (Small-Flower Wood-Rush)
Lycopus asper (Rough Water-Horehound)
Lycurus setosus (Bristly Wolf's-Tail)
Lygodesmia juncea (Rush Skeleton-Plant)
Machaeranthera tanacetifolia (Takhoka Daisy)
Magnolia acuminata (Cucumber-Tree)
Melampodium leucanthum (Plains Blackfoot)
Melica nitens (Three-Flower Melic Grass)
Mentzelia nuda (Goodmother)
Mimulus ringens (Allegheny Monkey-Flower)
Mirabilis albida (White Four-O'clock)
Mirabilis linearis (Narrow-Leaf Four-O'clock)
Mirabilis multiflora (Colorado Four-O'clock)
Miscanthus sinensis (Chinese Silver Grass)
Mollugo verticillata (Green Carpetweed)
Monarda fistulosa (Oswego-Tea)
Monarda pectinata (Plains Beebalm)
Muhlenbergia minutissima (Least Muhly)
Muhlenbergia montana (Mountain Muhly)
Muhlenbergia richardsonis (Matted Muhly)
Muhlenbergia wrightii (Wright's Muhly)
Najas flexilis (Northern Waternymph)
Najas guadalupensis (Guadalupe Waternymph)
Nicotiana attenuata (Coyote Tobacco)
Noccaea fendleri (Fendler's pennycress)
Nothocalais cuspidata (Wavy-Leaf Prairie-Dandelion)
Nuphar polysepala (Rocky Mountain pond-lily)
Oenothera howardii (Howard's Evening-Primrose)
Oenothera pallida subsp. trichocalyx
Opuntia fragilis (brittle pricklypear)
Opuntia polyacantha var. polyacantha (grizzlybear pricklypear)
Origanum vulgare (Wild Marjoram)
Orobanche fasciculata (Clustered Broomrape)
Orobanche ludoviciana (Louisiana broomrape)
Orthilia secunda (Sidebells)
Osmorhiza berteroi (Mountain Sweet-Cicely)
Osmorhiza depauperata (Blunt-Fruit Sweet-Cicely)
Oxybasis glauca var. salina (Rocky Mountain goosefoot)
Packera cana (Silver-Woolly Groundsel)
Packera fendleri (Fendler's Groundsel)
Packera multilobata (Lobe-Leaf Groundsel)
Packera neomexicana var. mutabilis (New Mexico groundsel)
Packera pseudaurea (Streambank Groundsel)
Packera werneriifolia (Rocky Alpine Groundsel)
Palafoxia sphacelata (Othake)
Paronychia jamesii (James' Nailwort)
Paspalum pubiflorum (Hairy-Seed Crown Grass)
Pedicularis parryi (Parry's Lousewort)
Pedicularis parryi subsp. parryi (Parry's lousewort)
Pediomelum tenuiflorum (Slender-Flower Indian-Breadroot)
Pennisetum glaucum (Pearl Millet)
Penstemon angustifolius (Broad-Beard Beardtongue)
Penstemon barbatus (Beard-Lip Beardtongue)
Penstemon cobaea (Cobaea Beardtongue)
Penstemon glaber (Western Smooth Beardtongue)
Penstemon linarioides subsp. coloradoensis (toadflax penstemon)
Penstemon whippleanus (Dark Beardtongue)
Persicaria amphibia (Water Smartweed)
Persicaria lapathifolia (Dock-Leaf Smartweed)
Persicaria pensylvanica (Pinkweed)
Persicaria punctata (dotted smartweed)
Phacelia alba (White Scorpion-Weed)
Phacelia hastata var. hastata (Lanceleaf phacelia)
Phacelia heterophylla (Variable-Leaf Scorpion-Weed)
Phacelia sericea (Purplefringe)
Phalaris arundinacea (Reed Canary Grass)
Phleum pratense (Common Timothy)
Phlox hoodii (Carpet Phlox)
Phlox longifolia (Long-Leaf Phlox)
Physalis hederifolia var. fendleri (Fendler's groundcherry)
Physalis longifolia var. longifolia (longleaf groundcherry)
Physalis subulata (Chihuahuan groundcherry)
Physalis virginiana (Virginia groundcherry)
Physaria ludoviciana (foothill bladderpod)
Picea engelmannii var. engelmannii
Picea glauca (White Spruce)
Picradeniopsis woodhousei (Woodhouse's False Bahia)
Pinus flexilis (Limber Pine)
Plantago elongata (Prairie Plantain)
Plantago lanceolata (English Plantain)
Platanthera stricta (Tundra Green Orchid)
Poa leptocoma (Marsh Blue Grass)
Poa pratensis (Kentucky Blue Grass)
Polanisia dodecandra subsp. trachysperma (Sandy-Seed Clammyweed)
Polemonium foliosissimum (Towering Jacob's-Ladder)
Polemonium occidentale (Western Jacob's-Ladder)
Polemonium pulcherrimum subsp. delicatum (Jacob's-ladder)
Polygonum aviculare (Yard Knotweed)
Polygonum aviculare subsp. buxiforme (Box Knotweed)
Polygonum aviculare subsp. depressum (Yard Knotweed)
Polygonum douglasii (Douglas' knotweed)
Polygonum erectum (Erect Knotweed)
Polygonum sawatchense (Johnston's knotweed)
Polygonum sawatchense subsp. sawatchense (Johnston's knotweed)
Polypodium hesperium (Western Polypody)
Polystichum lonchitis (Northern Holly Fern)
Populus alba (White Poplar)
Populus balsamifera (Balsam Poplar)
Potamogeton nodosus (Long-Leaf Pondweed)
Potentilla gracilis (Graceful Cinquefoil)
Potentilla rivalis (brook cinquefoil)
Prunus americana (American Plum)
Prunus virginiana var. demissa (western chokecherry)
Pseudognaphalium canescens (Wright's Rabbit-Tobacco)
Pseudoroegneria spicata (Bluebunch-Wheat Grass)
Pteridium aquilinum (Northern Bracken Fern)
Pterospora andromedea (Woodland Pinedrops)
Pulsatilla patens
Pyrola asarifolia (Pink Wintergreen)
Pyrola chlorantha (Green-Flower Wintergreen)
Quercus alba (Northern White Oak)
Quercus bicolor (Swamp White Oak)
Quercus montana (Chestnut Oak)
Quercus velutina (Black Oak)
Ranunculus abortivus (Kidney-Leaf Buttercup)
Ranunculus acris (Tall Buttercup)
Ranunculus aquatilis var. diffusus (Panarctic Water-Crowfoot)
Ranunculus cymbalaria (Alkali Buttercup)
Ranunculus micranthus (Rock Buttercup)
Ranunculus pedatifidus (Northern Buttercup)
Ranunculus ranunculinus (Tadpole Buttercup)
Ranunculus sceleratus (Cursed Buttercup)
Ribes aureum var. aureum (golden currant)
Ribes cereum (wax currant)
Ribes odoratum
Robinia pseudoacacia (Black Locust)
Rorippa palustris subsp. hispida (Marsh Yellowcress)
Rorippa teres (Southern Marsh Yellowcress)
Rosa nutkana subsp. macdougalii
Rosa woodsii (Woods' Rose)
Rudbeckia hirta (Black-Eyed-Susan)
Rumex hymenosepalus (Sand Dock)
Rumex occidentalis (Western Dock)
Rumex salicifolius (Willow Dock)
Ruppia cirrhosa (Spiral Ditch-Grass)
Sabina virginiana (Eastern Red-Cedar)
Sabulina rubella (Boreal Mock Sandwort)
Sagittaria latifolia (Duck-Potato)
Sagittaria montevidensis subsp. calycina (Hooded Arrowhead)
Salicornia rubra (Marshfire pickleweed)
Salix arctica (Arctic Willow)
Salix bebbiana (Gray Willow)
Salix candida (sageleaf willow)
Salix discolor (Pussy Willow)
Salix lucida (Shining Willow)
Salix nigra (Black Willow)
Salvia elegans (pineapple sage)
Salvia reflexa (Lance-Leaf Sage)
Sambucus canadensis (Common Elderberry)
Saponaria officinalis (Bouncing-Bett)
Saxifraga bronchialis
Saxifraga cespitosa (tufted alpine saxifrage)
Saxifraga flagellaris (Whiplash Saxifrage)
Sclerochloa dura (Common Hard Grass)
Scorzonera laciniata (False salsify)
Scutellaria galericulata (Hooded Skullcap)
Sedum lanceolatum (Lance-Leaf Stonecrop)
Senecio eremophilus (Desert Ragwort)
Senecio flaccidus (Thread-Leaf Ragwort)
Senecio flaccidus var. flaccidus (threadleaf ragwort)
Senecio fremontii (Dwarf Mountain Ragwort)
Senecio integerrimus var. exaltatus
Senecio serra (Tall Ragwort)
Senecio spartioides (broomlike ragwort)
Setaria viridis (Green Bristle Grass)
Sibbaldia procumbens (Creeping-Glow-Wort)
Sidalcea neomexicana (New mexico checker mallow salt spring checkerbloom)
Silene dichotoma (Forked Catchfly)
Silene drummondii var. striata (Drummond's campion)
Silene latifolia (white campion)
Silene menziesii var. menziesii (Menzies' campion)
Silene scouleri (Simple Catchfly)
Sisyrinchium montanum (Strict Blue-Eyed-Grass)
Solanum physalifolium (Ground-Cherry Nightshade)
Solidago altissima (Canada goldenrod)
Solidago canadensis (Canadian Goldenrod)
Solidago gigantea (Late Goldenrod)
Solidago juncea (Early Goldenrod)
Solidago lepida (Western Canada Goldenrod)
Solidago missouriensis (Missouri goldenrod)
Solidago simplex subsp. simplex (Mt. Albert goldenrod)
Sorbus aucuparia (European Mountain-Ash)
Sorbus scopulina (Cascade Mountain-Ash)
Sparganium eurycarpum (Broad-Fruit Burr-Reed)
Spartina gracilis (alkali cordgrass)
Sporobolus contractus (Narrow-Spike Dropseed)
Sporobolus heterolepis (Prairie Dropseed)
Sporobolus wrightii (Wright's Dropseed)
Stellaria graminea (Grass-Leaf Starwort)
Stellaria media (common chickweed)
Stuckenia pectinata (Sago False Pondweed)
Symphyotrichum ascendens (Western American-Aster)
Symphyotrichum ciliatum (Rayless alkali aster)
Symphyotrichum falcatum (Rough White Prairie American-Aster)
Symphyotrichum falcatum var. commutatum (white prairie aster)
Symphyotrichum lanceolatum var. hesperium (white panicle aster)
Symphyotrichum spathulatum (Mountain American-Aster)
Symphyotrichum spathulatum var. spathulatum
Tamarix chinensis (Five-Stamen Tamarisk)
Tanacetum vulgare (Common Tansy)
Taraxacum erythrospermum (Red-Seed Dandelion)
Taraxacum officinale (Common Dandelion)
Taraxacum scopulorum (Rock Dandelion)
Tetradymia canescens (Spineless Horsebrush)
Thalictrum dasycarpum (Purple Meadow-Rue)
Thalictrum revolutum (Waxy-Leaf Meadow-Rue)
Thinopyrum intermedium (Intermediate Quack Grass)
Townsendia exscapa (Stemless Townsend Daisy)
Toxicodendron rydbergii (Western Poison Ivy)
Tragia ramosa (Narrow-Leaf Noseburn)
Tribulus terrestris (Puncturevine)
Trichostema brachiatum (False Pennyroyal)
Trifolium hybridum (Alsike Clover)
Turritis glabra (Tower-Mustard)
Typha domingensis (Southern Cat-Tail)
Typha latifolia (Broad-Leaf Cat-Tail)
Ulmus parvifolia (Chinese Elm)
Ulmus pumila (Siberian Elm)
Urtica dioica (Stinging Nettle)
Utricularia minor (Lesser Bladderwort)
Vaccinium cespitosum (Dwarf Blueberry)
Vaccinium myrtillus (Whortle-Berry)
Vaccinium myrtillus var. oreophilum (whortleberry)
Veronica persica (Bird-Eye Speedwell)
Viburnum opulus (Highbush-Cranberry)
Viburnum trilobum (American Cranberrybush)
Vicia americana (American Purple Vetch)
Vinca minor (Lesser Periwinkle)
Viola adunca (Hook-Spur Violet)
Viola canadensis (Canadian White Violet)
Viola nephrophylla (Northern Bog Violet)
Viola selkirkii (Great-Spur Violet)
Woodsia plummerae (Plummer's Cliff Fern)
Xanthium strumarium (Rough Cockleburr)
Zigadenus elegans (Mountain Deathcamas)
Zigadenus venenosus (Meadow Poison Camus)
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