The wildlife at Rocky Mountain National Park is beautiful and diverse. There are a variety of amphibians, birds, fish, mammals, reptiles, and plants to explore. Check out all the incredible species this park has to offer!
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Rocky Mountain National Park Species List
Amphibians
| Amphibian Name | Scientific Name | Abundance | Nativeness |
| Boreal Chrous Frog | Pseudacris maculata | Common | Native |
| Boreal Toad | Bufo boreas boreas | Rare | Native |
| Tiger Salamander | Ambystoma tigrinum | Common | Native |
| Wood Frog | Rana sylvatica | Uncommon | Native |
Birds
| Bird Name | Scientific Name | Abundance | Nativeness |
| [Common Name Unknown] | Troglodytes pacificus | Rare | Native |
| American Avocet | Recurvirostra americana | Rare | Native |
| American Bittern | Botaurus lentiginosus | Rare | Native |
| American Coot | Fulica americana | Uncommon | Native |
| American Crow | Corvus brachyrhynchos | Common | Native |
| American Dipper | Cinclus mexicanus | Uncommon | Native |
| American Goldfinch | Carduelis tristis | Uncommon | Native |
| American Kestrel | Falco sparverius | Uncommon | Native |
| American Pipit | Anthus rubescens | Abundant | Native |
| American Redstart | Setophaga ruticilla | Occasional | Native |
| American Robin | Turdus migratorius | Abundant | Native |
| American Three-toed Woodpecker | Picoides tridactylus | Uncommon | Native |
| American Tree Sparrow | Spizella arborea | Rare | Native |
| American White Pelican | Pelecanus erythrorhynchos | Uncommon | Native |
| American Wigeon | Anas americana | Rare | Native |
| Ash-throated Flycatcher | Myiarchus cinerascens | Occasional | Native |
| Audubon’s Warbler | Dendroica coronata auduboni | Abundant | Native |
| Baird’s Sandpiper | Calidris bairdii | Rare | Native |
| Bald Eagle | Haliaeetus leucocephalus | Uncommon | Native |
| Baltimore Oriole | Icterus galbula | Occasional | Native |
| Band-tailed Pigeon | Columba fasciata | Uncommon | Native |
| Barn Swallow | Hirundo rustica | Uncommon | Native |
| Barrow’s Goldeneye | Bucephala islandica | Occasional | Native |
| Bay-breasted Warbler | Dendroica castanea | Occasional | Native |
| Belted Kingfisher | Ceryle alcyon | Uncommon | Native |
| Bewick’s Wren | Thryomanes bewickii | Occasional | Native |
| Black Rosy-Finch | Leucosticte atrata | Rare | Native |
| Black Swift | Cypseloides niger | Uncommon | Native |
| Black Tern | Chlidonias niger | Occasional | Native |
| Black-and-white Warbler | Mniotilta varia | Occasional | Native |
| Black-billed Magpie | Pica pica | Common | Native |
| Blackburnian Warbler | Dendroica fusca | Occasional | Native |
| Black-capped Chickadee | Poecile atricapillus | Common | Native |
| Black-chinned Hummingbird | Archilochus alexandri | Rare | Native |
| Black-crowned Night-Heron | Nycticorax nycticorax | Rare | Native |
| Black-headed Grosbeak | Pheucticus melanocephalus | Uncommon | Native |
| Black-throated Blue Warbler | Dendroica caerulescens | Occasional | Native |
| Black-throated Gray Warbler | Dendroica nigrescens | Occasional | Native |
| Black-throated Green Warbler | Dendroica virens | Occasional | Native |
| Black-throated Sparrow | Amphispiza bilineata | Occasional | Native |
| Blue Jay | Cyanocitta cristata | Occasional | Native |
| Blue-gray Gnatcatcher | Polioptila caerulea | Rare | Native |
| Blue-winged Teal | Anas discors | Uncommon | Native |
| Bobolink | Dolichonyx oryzivorus | Occasional | Native |
| Bohemian Waxwing | Bombycilla garrulus | Uncommon | Native |
| Bonaparte’s Gull | Larus philadelphia | Rare | Native |
| Boreal Owl | Aegolius funereus | Uncommon | Native |
| Brewer’s Blackbird | Euphagus cyanocephalus | Common | Native |
| Brewer’s Sparrow | Spizella breweri | Uncommon | Native |
| Broad-tailed Hummingbird | Selasphorus platycercus | Abundant | Native |
| Broad-winged Hawk | Buteo platypterus | Rare | Native |
| Brown Creeper | Certhia americana | Common | Native |
| Brown Thrasher | Toxostoma rufum | Rare | Native |
| Brown-capped Rosy-Finch | Leucosticte australis | Uncommon | Native |
| Brown-headed Cowbird | Molothrus ater | Common | Native |
| Bufflehead | Bucephala albeola | Uncommon | Native |
| Bullock’s Oriole | Icterus bullockii | Occasional | Native |
| Bushtit | Psaltriparus minimus | Occasional | Native |
| California Gull | Larus californicus | Uncommon | Native |
| Calliope Hummingbird | Stellula calliope | Rare | Native |
| Canada Goose | Branta canadensis | Uncommon | Native |
| Canvasback | Aythya valisineria | Rare | Native |
| Canyon Wren | Catherpes mexicanus | Rare | Native |
| Cape May Warbler | Dendroica tigrina | Occasional | Native |
| Cassin’s Finch | Carpodacus cassinii | Common | Native |
| Cassin’s Vireo | Vireo cassinii | Occasional | Native |
| Cedar Waxwing | Bombycilla cedrorum | Uncommon | Native |
| Chestnut-sided Warbler | Dendroica pensylvanica | Occasional | Native |
| Chipping Sparrow | Spizella passerina | Common | Native |
| Cinnamon Teal | Anas cyanoptera | Uncommon | Native |
| Clark’s Nutcracker | Nucifraga columbiana | Common | Native |
| Clay-colored Sparrow | Spizella pallida | Occasional | Native |
| Cliff Swallow | Hirundo pyrrhonota | Uncommon | Native |
| Common Grackle | Quiscalus quiscula | Uncommon | Native |
| Common Loon | Gavia immer | Rare | Native |
| Common Merganser | Mergus merganser | Common | Native |
| Common Moorhen | Gallinula chloropus | Occasional | Native |
| Common Nighthawk | Chordeiles minor | Uncommon | Native |
| Common Poorwill | Phalaenoptilus nuttallii | Rare | Native |
| Common Raven | Corvus corax | Common | Native |
| Common Redpoll | Carduelis flammea | Occasional | Native |
| Common Yellowthroat | Geothlypis trichas | Occasional | Native |
| Cooper’s Hawk | Accipiter cooperii | Common | Native |
| Cordilleran Flycatcher | Empidonax occidentalis | Uncommon | Native |
| Dark-eyed Junco | Junco hyemalis | Abundant | Native |
| Downy Woodpecker | Picoides pubescens | Uncommon | Native |
| Dusky Flycatcher | Empidonax oberholseri | Common | Native |
| Dusky Grouse | Dendragapus obscurus | Common | Native |
| Eared Grebe | Podiceps nigricollis | Uncommon | Native |
| Eastern Bluebird | Sialia sialis | Rare | Native |
| Eastern Kingbird | Tyrannus tyrannus | Rare | Native |
| Eastern Screech-owl | Otus asio | Uncommon | Native |
| European Starling | Sturnus vulgaris | Uncommon | Non-native |
| Evening Grosbeak | Coccothraustes vespertinus | Uncommon | Native |
| Ferruginous Hawk | Buteo regalis | Rare | Native |
| Flammulated Owl | Otus flammeolus | Rare | Native |
| Forster’s Tern | Sterna forsteri | Rare | Native |
| Fox Sparrow | Passerella iliaca | Uncommon | Native |
| Franklin’s Gull | Larus pipixcan | Uncommon | Native |
| Gadwall | Anas strepera | Common | Native |
| Golden Eagle | Aquila chrysaetos | Common | Native |
| Golden-crowned Kinglet | Regulus satrapa | Uncommon | Native |
| Golden-winged Warbler | Vermivora chrysoptera | Occasional | Native |
| Grace’s Warbler | Dendroica graciae | Occasional | Native |
| Gray Catbird | Dumetella carolinensis | Rare | Native |
| Gray Jay | Perisoreus canadensis | Common | Native |
| Gray-crowned Rosy-Finch | Leucosticte tephrocotis | Uncommon | Native |
| Gray-headed Junco | Junco hyemalis caniceps | Common | Native |
| Great Blue Heron | Ardea herodias | Uncommon | Native |
| Great Horned Owl | Bubo virginianus | Common | Native |
| Greater White-fronted Goose | Anser albifrons | Occasional | Native |
| Greater Yellowlegs | Tringa melanoleuca | Rare | Native |
| Green-tailed Towhee | Pipilo chlorurus | Common | Native |
| Green-winged Teal | Anas crecca | Uncommon | Native |
| Hairy Woodpecker | Picoides villosus | Common | Native |
| Hammond’s Flycatcher | Empidonax hammondii | Uncommon | Native |
| Harlan’s Hawk | Buteo jamaicensis harlani | Rare | Native |
| Harris’s Sparrow | Zonotrichia querula | Occasional | Native |
| Hepatic Tanager | Piranga flava | Occasional | Native |
| Hermit Thrush | Catharus guttatus | Common | Native |
| Herring Gull | Larus argentatus | Rare | Native |
| Hooded Warbler | Wilsonia citrina | Occasional | Native |
| Horned Grebe | Podiceps auritus | Occasional | Native |
| Horned Lark | Eremophila alpestris | Common | Native |
| House Finch | Carpodacus mexicanus | Common | Native |
| House Sparrow | Passer domesticus | Uncommon | Non-native |
| House Wren | Troglodytes aedon | Abundant | Native |
| Killdeer | Charadrius vociferus | Uncommon | Native |
| Krider’s Hawk | Buteo jamaicensis kriderii | Occasional | Native |
| Lark Bunting | Calamospiza melanocorys | Rare | Native |
| Lark Sparrow | Chondestes grammacus | Rare | Native |
| Lazuli Bunting | Passerina amoena | Rare | Native |
| Least Bittern | Ixobrychus exilis | Rare | Native |
| Least Flycatcher | Empidonax minimus | Rare | Native |
| Least Sandpiper | Calidris minutilla | Rare | Native |
| Lesser Goldfinch | Carduelis psaltria | Rare | Native |
| Lesser Scaup | Aythya affinis | Uncommon | Native |
| Lesser Yellowlegs | Tringa flavipes | Rare | Native |
| Lewis’s Woodpecker | Melanerpes lewis | Rare | Native |
| Lincoln’s Sparrow | Melospiza lincolnii | Common | Native |
| Loggerhead Shrike | Lanius ludovicianus | Rare | Native |
| Long-billed Curlew | Numenius americanus | Occasional | Native |
| Long-eared Owl | Asio otus | Uncommon | Native |
| Macgillivray’s Warbler | Oporornis tolmiei | Uncommon | Native |
| Magnolia Warbler | Dendroica magnolia | Occasional | Native |
| Mallard | Anas platyrhynchos | Abundant | Native |
| Marbled Godwit | Limosa fedoa | Occasional | Native |
| McCown’s Longspur | Calcarius mccownii | Occasional | Native |
| Merlin | Falco columbarius | Rare | Native |
| Mountain Bluebird | Sialia currucoides | Common | Native |
| Mountain Chickadee | Poecile gambeli | Common | Native |
| Mourning Dove | Zenaida macroura | Uncommon | Native |
| Myrtle Warbler | Dendroica coronata coronata | Occasional | Native |
| Nashville Warbler | Vermivora ruficapilla | Occasional | Native |
| Northern Flicker | Colaptes auratus | Common | Native |
| Northern Goshawk | Accipiter gentilis | Common | Native |
| Northern Harrier | Circus cyaneus | Uncommon | Native |
| Northern Mockingbird | Mimus polyglottos | Rare | Native |
| Northern Parula | Parula americana | Occasional | Native |
| Northern Pintail | Anas acuta | Rare | Native |
| Northern Pygmy-Owl | Glaucidium gnoma | Common | Native |
| Northern Rough-winged Swallow | Stelgidopteryx serripennis | Rare | Native |
| Northern Saw-whet Owl | Aegolius acadicus | Uncommon | Native |
| Northern Shoveler | Anas clypeata | Rare | Native |
| Northern Shrike, Great Gray Shrike | Lanius excubitor | Uncommon | Native |
| Northern Waterthrush | Seiurus noveboracensis | Occasional | Native |
| Olive-sided Flycatcher | Contopus borealis | Uncommon | Native |
| Orange-crowned Warbler | Vermivora celata | Uncommon | Native |
| Oregon Junco | Junco hyemalis shufeldti | Uncommon | Native |
| Osprey | Pandion haliaetus | Uncommon | Native |
| Ovenbird | Seiurus aurocapillus | Occasional | Native |
| Palm Warbler | Dendroica palmarum | Occasional | Native |
| Peregrine Falcon | Falco peregrinus | Rare | Native |
| Pied-billed Grebe | Podilymbus podiceps | Uncommon | Native |
| Pine Grosbeak | Pinicola enucleator | Uncommon | Native |
| Pine Siskin | Carduelis pinus | Abundant | Native |
| Pink-sided Junco | Junco hyemalis mearnsi | Rare | Native |
| Pinyon Jay | Gymnorhinus cyanocephalus | Occasional | Native |
| Plumbeous Vireo | Vireo plumbeus | Uncommon | Native |
| Prairie Falcon | Falco mexicanus | Uncommon | Native |
| Pygmy Nuthatch | Sitta pygmaea | Common | Native |
| Red Crossbill | Loxia curvirostra | Common | Native |
| Red-breasted Nuthatch | Sitta canadensis | Common | Native |
| Red-eyed Vireo | Vireo olivaceus | Occasional | Native |
| Redhead | Aythya americana | Uncommon | Native |
| Red-headed Woodpecker | Melanerpes erythrocephalus | Rare | Native |
| Red-naped Sapsucker | Sphyrapicus nuchalis | Common | Native |
| Red-necked Phalarope | Phalaropus lobatus | Occasional | Native |
| Red-tailed Hawk | Buteo jamaicensis | Common | Native |
| Red-winged Blackbird | Agelaius phoeniceus | Uncommon | Native |
| Ring-billed Gull | Larus delawarensis | Uncommon | Native |
| Ring-necked Duck | Aythya collaris | Uncommon | Native |
| Rock Pigeon | Columba livia | Uncommon | Non-native |
| Rock Wren | Salpinctes obsoletus | Uncommon | Native |
| Rose-breasted Grosbeak | Pheucticus ludovicianus | Occasional | Native |
| Rough-legged Hawk | Buteo lagopus | Uncommon | Native |
| Ruby-crowned Kinglet | Regulus calendula | Common | Native |
| Ruby-throated Hummingbird | Archilochus colubris | Occasional | Native |
| Ruddy Duck | Oxyura jamaicensis | Uncommon | Native |
| Rufous Hummingbird | Selasphorus rufus | Uncommon | Native |
| Rusty Blackbird | Euphagus carolinus | Occasional | Native |
| Sage Sparrow | Amphispiza belli | Rare | Native |
| Sage Thrasher | Oreoscoptes montanus | Uncommon | Native |
| Sandhill Crane | Grus canadensis | Rare | Native |
| Savannah Sparrow | Passerculus sandwichensis | Uncommon | Native |
| Say’s Phoebe | Sayornis saya | Uncommon | Native |
| Scarlet Tanager | Piranga olivacea | Occasional | Native |
| Sharp-shinned Hawk | Accipiter striatus | Uncommon | Native |
| Snowy Egret | Egretta thula | Rare | Native |
| Solitary Sandpiper | Tringa solitaria | Rare | Native |
| Song Sparrow | Melospiza melodia | Common | Native |
| Sora | Porzana carolina | Uncommon | Native |
| Spotted Sandpiper | Actitis macularia | Common | Native |
| Spotted Towhee | Pipilo maculatus | Rare | Native |
| Steller’s Jay | Cyanocitta stelleri | Common | Native |
| Swainson’s Hawk | Buteo swainsoni | Uncommon | Native |
| Swainson’s Thrush | Catharus ustulatus | Uncommon | Native |
| Tennessee Warbler | Vermivora peregrina | Occasional | Native |
| Townsend’s Solitaire | Myadestes townsendi | Common | Native |
| Townsend’s Warbler | Dendroica townsendi | Rare | Native |
| Tree Swallow | Tachycineta bicolor | Common | Native |
| Turkey Vulture | Cathartes aura | Common | Native |
| Varied Thrush | Ixoreus naevius | Occasional | Native |
| Veery | Catharus fuscescens | Rare | Native |
| Vesper Sparrow | Pooecetes gramineus | Uncommon | Native |
| Violet-green Swallow | Tachycineta thalassina | Common | Native |
| Virginia Rail | Rallus limicola | Uncommon | Native |
| Virginia’s Warbler | Vermivora virginiae | Uncommon | Native |
| Warbling Vireo | Vireo gilvus | Common | Native |
| Western Bluebird | Sialia mexicana | Uncommon | Native |
| Western Grebe | Aechmophorus occidentalis | Uncommon | Native |
| Western Kingbird | Tyrannus verticalis | Uncommon | Native |
| Western Meadowlark | Sturnella neglecta | Rare | Native |
| Western Sandpiper | Calidris mauri | Rare | Native |
| Western Scrub-jay | Aphelocoma californica | Occasional | Native |
| Western Tanager | Piranga ludoviciana | Common | Native |
| Western Wood-Pewee | Contopus sordidulus | Common | Native |
| White-breasted Nuthatch | Sitta carolinensis | Uncommon | Native |
| White-crowned Sparrow | Zonotrichia leucophrys | Common | Native |
| White-eyed Vireo | Vireo griseus | Occasional | Native |
| White-faced Ibis | Plegadis chihi | Uncommon | Native |
| White-tailed Ptarmigan | Lagopus leucurus | Uncommon | Native |
| White-throated Swift | Aeronautes saxatalis | Uncommon | Native |
| White-winged Crossbill | Loxia leucoptera | Rare | Native |
| Wild Turkey | Meleagris gallopavo | Rare | Non-native |
| Willet | Catoptrophorus semipalmatus | Rare | Native |
| Williamson’s Sapsucker | Sphyrapicus thyroideus | Common | Native |
| Willow Flycatcher | Empidonax traillii | Occasional | Native |
| Wilson’s Phalarope | Phalaropus tricolor | Rare | Native |
| Wilson’s Snipe | Gallinago gallinago | Common | Native |
| Wilson’s Warbler | Wilsonia pusilla | Common | Native |
| Winter Wren | Troglodytes troglodytes | Occasional | Native |
| Wood Duck | Aix sponsa | Rare | Native |
| Wood Thrush | Hylocichla mustelina | Occasional | Native |
| Worm-eating Warbler | Helmitheros vermivorus | Occasional | Native |
| Yellow Warbler | Dendroica petechia | Uncommon | Native |
| Yellow-breasted Chat | Icteria virens | Occasional | Native |
| Yellow-headed Blackbird | Xanthocephalus xanthocephalus | Rare | Native |
| Yellow-rumped Warbler | Dendroica coronata | Abundant | Native |
Fish
| Fish Name | Scientific Name | Abundance | Nativeness |
| Brook Trout | Salvelinus fontinalis | Common | Non-native |
| Brown Trout | Salmo trutta | Uncommon | Non-native |
| Colorado River Cutthroat Trout | Oncorhynchus clarkii pleuriticus | Uncommon | Native |
| Cutthroat Trout | Oncorhynchus clarkii | Common | Native |
| Greenback Cutthroat Trout | Oncorhynchus clarkii stomias | Common | Native |
| Mottled Sculpin | Cottus bairdii | Uncommon | Native |
| Rainbow Trout | Oncorhynchus mykiss | Uncommon | Non-native |
| Western Longnose Sucker | Catostomus catostomus | Uncommon | Native |
| Western White Sucker | Catostomus commersoni | Uncommon | Native |
| Yellowstone Cutthroat Trout | Oncorhynchus clarkii bouvieri | Uncommon | Non-native |
Mammals
| Mammal Name | Scientific Name | Abundance | Nativeness |
| Abert’s Squirrel | Sciurus aberti | Uncommon | Native |
| Aurochs, Aurochs, Domestic Cattle (feral), Domesticated Cattle | Bos taurus | Unknown | Non-native |
| Badger | Taxidea taxus | Uncommon | Native |
| Beaver | Castor canadensis | Uncommon | Native |
| Bighorn Sheep | Ovis canadensis | Common | Native |
| Black Bear | Ursus americanus | Common | Native |
| Bobcat | Lynx rufus | Common | Native |
| Bushy-tailed Woodrat | Neotoma cinerea | Uncommon | Native |
| Chickaree, Pine Squirrel | Tamiasciurus hudsonicus | Common | Native |
| Coyote | Canis latrans | Common | Native |
| Deer Mouse | Peromyscus maniculatus | Abundant | Native |
| Dwarf Shrew | Sorex nanus | Rare | Native |
| Ermine | Mustela erminea | Uncommon | Native |
| Fox Squirrel | Sciurus niger | Rare | Non-native |
| Golden-mantled Ground Squirrel | Spermophilus lateralis | Common | Native |
| Heather Vole | Phenacomys intermedius | Unknown | Native |
| Hoary Bat | Lasiurus cinereus | Unknown | Native |
| Least Chipmunk | Tamias minimus | Common | Native |
| Little Brown Bat | Myotis lucifugus | Unknown | Native |
| Long-eared Myotis | Myotis evotis | Unknown | Native |
| Long-legged Myotis | Myotis volans | Unknown | Native |
| Long-tailed Vole | Microtus longicaudus | Unknown | Native |
| Long-tailed Weasel | Mustela frenata | Common | Native |
| Lynx | Lynx canadensis | Rare | Native |
| Marten | Martes americana | Uncommon | Native |
| Masked Shrew | Sorex cinereus | Unknown | Native |
| Mink | Mustela vison | Rare | Native |
| Montane Shrew | Sorex monticolus | Unknown | Native |
| Montane Vole | Microtus montanus | Common | Native |
| Moose | Alces alces | Uncommon | Native |
| Mountain Lion | Puma concolor | Unknown | Native |
| Mule Deer | Odocoileus hemionus | Common | Native |
| Muskrat | Ondatra zibethicus | Uncommon | Native |
| Northern Pocket Gopher | Thomomys talpoides | Common | Native |
| Nuttall’s Cottontail | Sylvilagus nuttallii | Uncommon | Native |
| Pika | Ochotona princeps | Common | Native |
| Porcupine | Erethizon dorsatum | Uncommon | Native |
| Pronghorn Antelope | Antilocapra americana | Occasional | Native |
| Pygmy Shrew | Sorex hoyi | Unknown | Native |
| Raccoon | Procyon lotor | Unknown | Native |
| Red Fox | Vulpes vulpes | Common | Native |
| River Otter | Lontra canadensis | Uncommon | Native |
| Rock Mouse | Peromyscus nasutus | Unknown | Native |
| Silver-haired Bat | Lasionycteris noctivagans | Unknown | Native |
| Snowshoe Hare | Lepus americanus | Unknown | Native |
| Southern Red-backed Vole | Clethrionomys gapperi | Unknown | Native |
| Striped Skunk | Mephitis mephitis | Unknown | Native |
| Uinta Chipmunk | Tamias umbrinus | Common | Native |
| Wapiti, or American Elk | Cervus elaphus | Abundant | Native |
| Water Shrew | Sorex palustris | Unknown | Native |
| Western Jumping Mouse | Zapus princeps | Common | Native |
| Western Spotted Skunk | Spilogale gracilis | Unknown | Native |
| White-tailed Deer | Odocoileus virginianus | Occasional | Native |
| White-tailed Jackrabbit | Lepus townsendii | Rare | Native |
| Wolverine | Gulo gulo | Occasional | Native |
| Wyoming Ground Squirrel | Spermophilus elegans | Common | Native |
| Yellow-bellied Marmot | Marmota flaviventris | Common | Native |
Reptiles
| Reptile Name | Scientific Name | Abundance | Nativeness |
| Western Terrestrial Garter Snake | Thamnophis elegans | Unknown | Native |
Plants
| Plant Name | Scientific Name | Abundance | Nativeness |
| [Common Name Unknown] | Antennaria pulcherrima ssp. anaphaloides | Common | Native |
| [Common Name Unknown] | Astragalus eucosmus | Common | Native |
| [Common Name Unknown] | Athyrium filix-femina | Common | Native |
| [Common Name Unknown] | Lactuca tatarica ssp. pulchella | Unknown | Native |
| [Common Name Unknown] | Linnaea borealis ssp. americana | Unknown | Native |
| [Common Name Unknown] | Oligosporus campestris | Unknown | Native |
| [Common Name Unknown] | Pedicularis groenlandica ssp. groenlandica | Unknown | Native |
| Alder | Alnus incana ssp. tenuifolia | Common | Native |
| alfalfa | Medicago sativa | Unknown | Native |
| Alp Lily | Lloydia serotina | Common | Native |
| Alpine Androsace | Androsace septentrionalis | Common | Native |
| Alpine Avens | Geum rossii | Common | Native |
| alpine bentgrass, mountain bent grass | Agrostis humilis | Unknown | Native |
| Alpine Bistort, serpent-grass | Polygonum viviparum | Common | Native |
| alpine bluegrass | Poa alpina | Common | Native |
| alpine brook saxifrage, pygmy saxifrage, weak saxifrage | Saxifraga rivularis | Common | Native |
| Alpine Clover | Trifolium dasyphyllum | Common | Native |
| alpine dandelion | Taraxacum lyratum | Unknown | Native |
| alpine false goldenaster | Heterotheca pumila | Common | Native |
| Alpine Fireweed | Chamerion latifolium | Uncommon | Native |
| Alpine Forget-me-not | Eritrichium nanum var. aretioides | Common | Native |
| Alpine Forget-me-not | Myosotis asiatica | Uncommon | Native |
| alpine golden buckwheat | Eriogonum flavum | Unknown | Unknown |
| Alpine Golden Buckwheat | Eriogonum jamesii var. xanthum | Common | Native |
| Alpine Harebell | Campanula uniflora | Common | Native |
| Alpine Kittentail | Besseya alpina | Common | Native |
| Alpine Ladyfern | Athyrium americanum | Unknown | Native |
| alpine leafybract aster | Symphyotrichum foliaceum var. foliaceum | Unknown | Unknown |
| Alpine Lousewort | Pedicularis sudetica ssp. scopulorum | Common | Native |
| Alpine Meadowrue | Thalictrum alpinum | Common | Native |
| Alpine mouse-ear | Cerastium beeringianum ssp. earlei | Unknown | Native |
| Alpine Nailwort | Paronychia pulvinata | Common | Native |
| alpine oreoxis, tundra alpine-parsley | Oreoxis alpina | Common | Native |
| alpine pennycress, Wild Candytuft | Thlaspi montanum var. montanum | Common | Native |
| Alpine Phlox | Phlox pulvinata | Common | Native |
| Alpine Poppy | Papaver radicatum ssp. kluanense | Common | Native |
| alpine prickly currant, gooseberry currant, mountain gooseberry | Ribes montigenum | Common | Native |
| Alpine Primrose | Primula angustifolia | Common | Native |
| Alpine Sandwort | Minuartia obtusiloba | Common | Native |
| Alpine Sorrell | Oxyria digyna | Common | Native |
| Alpine Spring Beauty | Claytonia megarhiza | Common | Native |
| Alpine Sunflower, Old-Man-of-the-Mt | Tetraneuris grandiflora | Common | Native |
| Alpine Timothy | Phleum alpinum | Common | Native |
| Alpine Vetch | Astragalus alpinus | Common | Native |
| alpine violet | Viola labradorica | Unknown | Native |
| alpine willow | Salix petrophila | Common | Native |
| alpine willowherb, alpine willowweed, pimpernel willowherb | Epilobium anagallidifolium | Common | Native |
| alpine yellowcress | Rorippa alpina | Common | Native |
| Alsike Clover | Trifolium hybridum | Unknown | Non-native |
| Alumroot | Heuchera bracteata | Unknown | Native |
| alyssum, European alyssum | Alyssum minus | Unknown | Native |
| Amaranth | Amaranthus retroflexus | Common | Non-native |
| American bistort | Polygonum bistortoides | Unknown | Native |
| American deervetch, American purple vetch, American vetch | Vicia americana | Unknown | Native |
| American dragonhead | Dracocephalum parviflorum | Common | Native |
| American globeflower | Trollius laxus ssp. albiflorus | Unknown | Unknown |
| American mannagrass, manna grass | Glyceria grandis | Unknown | Native |
| American plum | Prunus americana | Unknown | Unknown |
| American Speedwell | Veronica americana | Common | Native |
| American Thistle | Cirsium centaureae | Common | Native |
| American watermilfoil, shortspike watermilfoil, Siberian water-milfoil | Myriophyllum sibiricum | Common | Native |
| American yellowrocket, erectpod wintercress, wintercress | Barbarea orthoceras | Common | Native |
| analogue sedge, shortbeak sedge | Carex simulata | Unknown | Native |
| Angelica | Angelica ampla | Common | Native |
| annual blue grass | Poa annua | Unknown | Non-native |
| annual cudweed, cotton cudweed, cottonbatting cudweed, cottonbatting plant | Pseudognaphalium stramineum | Unknown | Native |
| Annual Scouring-rush | Equisetum laevigatum | Unknown | Native |
| Annual Veronica | Veronica peregrina ssp. xalapensis | Common | Native |
| Arapaho sedge | Carex arapahoensis | Uncommon | Native |
| Arc Dome draba, slender draba | Draba albertina | Unknown | Native |
| arctic bentgrass, northern bentgrass | Agrostis mertensii | Common | Native |
| arctic bluegrass | Poa arctica | Unknown | Native |
| arctic draba, Austrian draba | Draba fladnizensis | Common | Native |
| Arctic Fleabane | Erigeron simplex | Common | Native |
| Arctic Gentian | Gentiana algida | Common | Native |
| Arctic Mountain-sage | Artemisia arctica ssp. arctica | Common | Native |
| Arctic Woodrush | Luzula spicata | Common | Native |
| Arctic Yellow Violet | Viola biflora | Uncommon | Native |
| arid goosefoot, aridland goosefoot, desert goosefoot, narrowleaf goosefoot | Chenopodium desiccatum | Unknown | Native |
| Arizona mountain dandelion, false agoseris | Agoseris glauca var. laciniata | Unknown | Native |
| Arrowgrass | Triglochin maritimum | Unknown | Native |
| Arrowleaf Ragwort | Senecio triangularis | Common | Native |
| artic buttercup | Ranunculus hyperboreus | Common | Native |
| Asparagus | Asparagus officinalis | Rare | Non-native |
| Aspen Daisy | Erigeron speciosus var. macranthus | Common | Native |
| aspen fleabane, Oregon daisy, Oregon fleabane, threenerve fleabane | Erigeron speciosus | Unknown | Native |
| aspen peavine | Lathyrus lanszwertii var. leucanthus | Unknown | Native |
| Aspen Sunflower | Helianthella quinquenervis | Common | Native |
| autumn dwarf gentian, Rose Gentian | Gentianella amarella ssp. acuta | Common | Native |
| autumn willow | Salix serissima | Rare | Native |
| autumn willowherb, autumn willowweed, tall annual willowherb | Epilobium brachycarpum | Unknown | Native |
| Avalanche Lily | Erythronium grandiflorum ssp. grandiflorum | Common | Native |
| Avens | Geum aleppicum | Unknown | Native |
| Avens | Geum macrophyllum | Common | Native |
| Baby’s breath | Gypsophila paniculata | Rare | Non-native |
| Babysbreath | Gayophytum ramosissimum | Unknown | Native |
| Baffin fescue | Festuca baffinensis | Uncommon | Native |
| Baker’s lupine | Lupinus bakeri | Unknown | Unknown |
| Balsam Poplar | Populus balsamifera | Common | Native |
| barrenground willow, shortfruit willow | Salix brachycarpa | Common | Native |
| bashful ragwort | Senecio pudicus | Common | Native |
| beaked hazel, beaked hazelnut, western hazel | Corylus cornuta | Unknown | Native |
| bear daisy, Bear River fleabane | Erigeron ursinus | Common | Native |
| bearberry, bearberry manzanita, kinnikinnick, mealberry | Arctostaphylos uva-ursi | Unknown | Native |
| beardless wildrye | Leymus triticoides | Unknown | Unknown |
| Beautiful Daisy, Tall Fleabane | Erigeron elatior | Common | Native |
| Beautiful Sandwort | Minuartia rubella | Unknown | Native |
| Beauty Cinquefoil | Potentilla pulcherrima | Common | Native |
| Bebb sedge, Bebb’s sedge | Carex bebbii | Unknown | Native |
| Bebb Willow | Salix bebbiana | Common | Native |
| Beggar’s Tick | Lappula occidentalis var. occidentalis | Uncommon | Native |
| Bellardi bog sedge, Bellardi kobresia | Kobresia myosuroides | Common | Native |
| Bermuda grass | Cynodon dactylon | Uncommon | Non-native |
| big bluegrass, Sandberg bluegrass, Sandberg’s bluegrass | Poa secunda | Unknown | Native |
| Big Chickweed | Cerastium fontanum ssp. vulgare | Uncommon | Non-native |
| Big Flower Cinquefoil | Potentilla fissa | Common | Native |
| Bigelow Groundsel | Senecio bigelovii var. hallii | Unknown | Native |
| Bigelow tansyaster, Bigelow’s tansyaster | Machaeranthera bigelovii var. bigelovii | Common | Native |
| Bindweed | Convolvulus arvensis | Rare | Non-native |
| Birdfoot Buttercup | Ranunculus pedatifidus | Uncommon | Native |
| Bitter Buffaloberry | Shepherdia canadensis | Common | Native |
| bitter fleabane | Erigeron acris ssp. debilis | Unknown | Unknown |
| Bitter fleabane | Erigeron acris ssp. politus | Common | Native |
| Bitterbrush | Purshia tridentata | Common | Native |
| Bittercress | Cardamine pensylvanica | Uncommon | Native |
| bitteroot | Lewisia rediviva | Unknown | Native |
| black alpine sedge | Carex nigricans | Unknown | Native |
| Black Bindweed | Polygonum convolvulus var. convolvulus | Common | Non-native |
| Black Medic | Medicago lupulina | Common | Non-native |
| black sedge, Blackened Sedge | Carex atratiformis | Uncommon | Native |
| black sedge, new sedge | Carex nova | Unknown | Native |
| blackandwhite sedge, black-and-white sedge | Carex albonigra | Common | Native |
| Black-eyed Susan | Rudbeckia hirta var. pulcherrima | Common | Native |
| Black-headed Daisy | Erigeron melanocephalus | Common | Native |
| blackroot sedge, black-root sedge | Carex elynoides | Common | Native |
| Black-tipped Senecio | Senecio atratus | Common | Native |
| Bladder Fern | Cystopteris montana | Unknown | Native |
| Bladderpod | Lesquerella montana | Common | Native |
| Blanketflower | Gaillardia aristata | Common | Native |
| Blister Buttercup | Ranunculus sceleratus var. sceleratus | Unknown | Native |
| blister sedge, inflated sedge | Carex vesicaria | Unknown | Native |
| Blue Flax | Linum lewisii var. lewisii | Common | Native |
| Blue Grama | Bouteloua gracilis | Unknown | Native |
| blue wild rye, blue wildrye | Elymus glaucus | Common | Native |
| Bluebells, Lanceleaf Chiming Bells | Mertensia lanceolata | Common | Native |
| blueberry willow, Booth’s willow | Salix boothii | Unknown | Native |
| bluebunch wheatgrass, bluebunch-wheat grass | Pseudoroegneria spicata | Unknown | Native |
| bluebuttons, field scabiosa | Knautia arvensis | Uncommon | Non-native |
| Blue-eyed Grass | Sisyrinchium montanum | Common | Native |
| Blue-eyed Mary | Collinsia parviflora | Common | Native |
| Bluejoint | Calamagrostis canadensis | Common | Native |
| Blueleaf Cinquefoil | Potentilla diversifolia | Common | Native |
| blunt sedge, obtuse sedge | Carex obtusata | Unknown | Native |
| blunt-leaf grove-sandwort, bluntleaf sandwort, grove sandwort | Moehringia lateriflora | Uncommon | Native |
| bluntleaf spikemoss | Selaginella mutica | Unknown | Native |
| bog bluegrass, bog bluegrass, marsh, marsh bluegrass | Poa leptocoma | Uncommon | Native |
| Bog Moss Gentian | Gentiana fremontii | Common | Native |
| bog stitchwort, Rock sandwort | Minuartia stricta | Rare | Native |
| bog yellowcress, hispid yellowcress | Rorippa palustris ssp. hispida | Unknown | Native |
| Bolander’s quillwort | Isoetes bolanderi | Common | Native |
| boreal alopecurus | Alopecurus alpinus ssp. glaucus | Rare | Native |
| boreal bog sedge | Carex magellanica ssp. irrigua | Unknown | Native |
| bottlebrush squirreltail, squirreltail, western bottle-brush grass | Elymus elymoides | Unknown | Native |
| Boulder Raspberry | Rubus deliciosus | Common | Native |
| Bracken, eagle fern | Pteridium aquilinum var. pubescens | Uncommon | Native |
| bractless blazingstar | Mentzelia nuda var. nuda | Unknown | Native |
| branched cinquefoil | Potentilla effusa | Common | Native |
| Brewer’s monkeyflower | Mimulus breweri | Unknown | Native |
| brightblue speedwell, thyme-leaf speedwell | Veronica serpyllifolia ssp. humifusa | Common | Native |
| bristlestalked sedge, bristly-stalk sedge, bristlystalked sedge | Carex leptalea | Rare | Native |
| Brittle Fern | Cystopteris fragilis | Uncommon | Native |
| broadleaf arnica | Arnica latifolia | Common | Native |
| broadleaf knotweed, dwarf knotweed, zigzag knotweed | Polygonum minimum | Uncommon | Native |
| broadleaf willowweed, milkflower willowherb, white-flower willowherb | Epilobium lactiflorum | Common | Native |
| brook saxifrage, streambank saxifrage | Saxifraga odontoloma | Common | Native |
| Brookcress | Cardamine cordifolia | Common | Native |
| Broom Huckleberry | Vaccinium scoparium | Common | Native |
| broom sedge, pointed broom sedge | Carex scoparia | Unknown | Native |
| Broom Senecio | Senecio spartioides | Common | Native |
| brown bog sedge, Buxbaum sedge, Buxbaum’s sedge | Carex buxbaumii | Uncommon | Native |
| brown everlasting, umber pussytoes | Antennaria umbrinella | Common | Native |
| Brownie Ladyslipper, Purple Ladyslipper | Cypripedium fasciculatum | Common | Native |
| brownish sedge | Carex brunnescens | Unknown | Native |
| bulbous woodland-star, smooth woodland-star | Lithophragma glabrum | Uncommon | Native |
| Bull Thistle | Cirsium vulgare | Rare | Non-native |
| Burnt-orange Dandelion | Agoseris aurantiaca | Common | Native |
| Bush Honeysuckle, twinberry honeysuckle | Lonicera involucrata var. involucrata | Common | Native |
| bushy knotweed, tall knotweed, yellow knotweed, yellow-flower knotweed | Polygonum ramosissimum | Unknown | Native |
| Butter-and-eggs, Yellow Toadflax | Linaria vulgaris | Abundant | Non-native |
| butterweed, butterweed groundsel, tall ragwort | Senecio serra | Unknown | Native |
| caespitose four-nerve daisy | Tetraneuris acaulis var. caespitosa | Common | Native |
| Calypso | Calypso bulbosa | Rare | Native |
| Canada Bluegrass | Poa compressa | Uncommon | Non-native |
| Canada goldenrod, Canadian goldenrod, common goldenrod | Solidago canadensis | Common | Native |
| Canada Thistle | Cirsium arvense | Common | Non-native |
| Canadian rockcress | Arabis drummondii | Common | Native |
| Canadian white violet | Viola canadensis var. canadensis | Unknown | Unknown |
| Canadian white violet | Viola canadensis var. scopulorum | Unknown | Native |
| Canadian white violet | Viola villosa | Unknown | Native |
| Canadian white violet, Rydberg violet | Viola canadensis var. rugulosa | Common | Native |
| Caraway | Carum carvi | Common | Non-native |
| catmint, catnip, catwort, field balm | Nepeta cataria | Unknown | Native |
| Chamisso arnica | Arnica chamissonis ssp. foliosa | Common | Native |
| chamisso sedge, thickhead sedge | Carex pachystachya | Unknown | Native |
| Cheat grass | Bromus tectorum | Common | Non-native |
| chestnut rush | Juncus castaneus | Common | Native |
| Chiming Bells | Mertensia ciliata | Common | Native |
| Chokecherry | Prunus virginiana var. melanocarpa | Common | Native |
| clavatefruit willowweed, clubfruit willowherb, talus willowherb | Epilobium clavatum | Uncommon | Native |
| cleftleaf groundsel, Rocky Mountain groundsel | Packera streptanthifolia | Common | Native |
| Cliff Brake | Cryptogramma acrostichoides | Uncommon | Native |
| cloaked bulrush, pale bulrush | Scirpus pallidus | Unknown | Native |
| cloud sedge, Hayden sedge, Hayden’s sedge | Carex haydeniana | Uncommon | Native |
| Cloudcroft thistle, Gila thistle, Mogollon thistle, pale thistle, Parry’s thistle | Cirsium parryi | Common | Native |
| clustered field sedge, slim sedge | Carex praegracilis | Common | Native |
| Clustered Penstemon | Penstemon procerus | Common | Native |
| clustered wheat grass, desert wheatgrass | Agropyron desertorum | Unknown | Native |
| Coaltown sagebrush, mountain silver sagebrush, silver sagebrush | Artemisia cana ssp. viscidula | Common | Native |
| coast wallflower, sand dune wallflower, western wallflower | Erysimum capitatum | Common | Native |
| Collomia | Collomia linearis | Common | Native |
| Colorado Blue Columbine | Aquilegia caerulea | Common | Native |
| Colorado Blue Spruce | Picea pungens | Common | Native |
| Colorado cinquefoil | Potentilla subjuga | Common | Native |
| Colorado divide whitlow-grass | Draba streptobrachia | Unknown | Native |
| Colorado fescue | Festuca brachyphylla ssp. coloradensis | Common | Native |
| Colorado ragwort | Senecio soldanella | Common | Native |
| Colorado rush | Juncus confusus | Common | Native |
| Colorado Thistle | Cirsium coloradense | Common | Native |
| Colorado thistle, stemless thistle | Cirsium tioganum var. coloradense | Unknown | Unknown |
| Colorado Wild rye | Leymus cinereus | Rare | Non-native |
| Colorado wildrye | Leymus ambiguus | Common | Native |
| Coloradom Currant | Ribes laxiflorum | Common | Native |
| Columbia needlegrass, Nelson achnatherum | Achnatherum nelsonii | Common | Native |
| common bladderpod, common bladderwort, greater bladderwort | Utricularia macrorhiza | Unknown | Native |
| Common Burdock | Arctium minus | Uncommon | Non-native |
| common cowparsnip, cow parsnip, cowparsnip | Heracleum maximum | Unknown | Native |
| Common Dandelion | Taraxacum officinale | Abundant | Non-native |
| Common Dandelion | Taraxacum officinale ssp. ceratophorum | Common | Native |
| common hops | Humulus lupulus var. neomexicanus | Common | Native |
| common juniper | Juniperus communis var. montana | Unknown | Unknown |
| common juniper, Dwarf Juniper | Juniperus communis var. depressa | Common | Native |
| Common Mitreroot | Mitella pentandra | Common | Native |
| common monkeyflower, seep monkeyflower | Mimulus guttatus | Common | Native |
| Common Plantain | Plantago major | Unknown | Native |
| common rush | Juncus effusus | Unknown | Unknown |
| Common Sheep Sorrel | Rumex acetosella | Common | Non-native |
| common spikerush, creeping spikerush, creeping spike-rush, marsh spike-rush, spikesedge | Eleocharis palustris | Common | Native |
| Common Sunflower | Helianthus annuus | Common | Native |
| Cottongrass | Eriophorum angustifolium ssp. scabriusculum | Uncommon | Native |
| Coulter Daisy | Erigeron coulteri | Common | Native |
| Cowbane | Oxypolis fendleri | Common | Native |
| Crandall Sedge | Carex pyrenaica ssp. pyrenaica | Unknown | Native |
| Crandall’s saxifrage | Saxifraga flagellaris ssp. crandallii | Common | Native |
| cream-anther field pepperwort, field pepperweed | Lepidium campestre | Unknown | Non-native |
| creeping bentgrass | Agrostis stolonifera | Unknown | Native |
| creeping nailwort, low nailwort, nailwort, stemless nailwort | Paronychia sessiliflora | Unknown | Native |
| Creeping Wintergreen | Gaultheria humifusa | Common | Native |
| Crested Wheatgrass | Agropyron cristatum | Unknown | Non-native |
| Cryptantha | Cryptantha fendleri | Unknown | Native |
| Cudweed | Pseudognaphalium viscosum | Common | Native |
| cudweed sagewort, gray sagewort, Louisiana sagewort, Louisiana wormwood, mugwort wormwood, prairie sage, white sagebrush | Artemisia ludoviciana | Common | Native |
| Curly Dock | Rumex crispus | Common | Non-native |
| curlycup gumweed, curlytop gumweed, gumweed, rosinweed, tarweed | Grindelia squarrosa | Unknown | Native |
| curlyhead goldenweed | Pyrrocoma crocea | Unknown | Native |
| curlytop knotweed | Polygonum lapathifolium | Unknown | Native |
| Cusick’s bluegrass | Poa cusickii ssp. epilis | Common | Native |
| Cusick’s bluegrass | Poa cusickii ssp. pallida | Unknown | Native |
| cutleaf coneflower, green-head coneflower | Rudbeckia laciniata var. ampla | Unknown | Native |
| Cut-leaf Evening-primrose | Oenothera coronopifolia | Common | Native |
| Cutleaf Nightshade | Solanum triflorum | Unknown | Non-native |
| Cut-leaved Daisy | Erigeron compositus | Common | Native |
| Dalmation Toadflax | Linaria dalmatica ssp. dalmatica | Common | Non-native |
| dandelion hawksbeard, fiddleleaf hawksbeard, fiddle-leaf hawksbeard, fiddle-leaf hawk’s-beard | Crepis runcinata | Common | Native |
| dandelion ragwort | Senecio taraxacoides | Uncommon | Native |
| Dane’s dwarf gentian | Gentianella tenella ssp. tenella | Uncommon | Native |
| dark goosefoot, pinyon goosefoot | Chenopodium atrovirens | Common | Native |
| Dark Penstemon | Penstemon whippleanus | Common | Native |
| Death Camas | Zigadenus elegans ssp. elegans | Common | Native |
| deer sedge | Carex hallii | Unknown | Unknown |
| dense clubmoss, lesser spikemoss, small clubmoss | Selaginella densa | Common | Native |
| dense-flower dock, denseflowered dock | Rumex densiflorus | Unknown | Native |
| Deptford Pink | Dianthus armeria | Rare | Non-native |
| desert madwort | Alyssum desertorum | Unknown | Unknown |
| devil’s shoestring | Polygonum amphibium var. emersum | Unknown | Native |
| Devil’s Shoestrings | Polygonum arenastrum | Common | Native |
| Dewey sedge | Carex deweyana | Unknown | Unknown |
| diamond-leaf saxifrage | Saxifraga rhomboidea | Common | Native |
| Diffuse knapweed | Centaurea diffusa | Uncommon | Non-native |
| Douglas’ knotweed | Polygonum douglasii | Common | Native |
| Douglas sedge, Douglas’ sedge | Carex douglasii | Common | Native |
| Douglas-fir | Pseudotsuga menziesii | Common | Native |
| drooping pointloco, hangpod crazyweed, nodding crazyweed, nodding locoweed, pendant-pod locoweed | Oxytropis deflexa | Unknown | Native |
| drooping woodreed, slender wood-reed | Cinna latifolia | Uncommon | Native |
| Drummond rush, Drummond’s rush | Juncus drummondii | Common | Native |
| Drummond sedge | Carex rupestris ssp. drummondiana | Unknown | Native |
| Drummond’s campion | Silene drummondii var. drummondii | Common | Native |
| Drummond’s willow | Salix drummondiana | Common | Native |
| Dryad | Dryas octopetala ssp. hookeriana | Common | Native |
| Dryland Daisy | Erigeron subtrinervis var. subtrinervis | Common | Native |
| dryspike sedge | Carex siccata | Unknown | Native |
| dryspike sedge, dry-spike sedge, wind sedge | Carex foenea | Unknown | Unknown |
| drywoods miterwort | Mitella stauropetala var. stenopetala | Common | Native |
| Duckweed | Lemna minor | Unknown | Native |
| Dudley rush, Dudley’s rush | Juncus dudleyi | Unknown | Native |
| dunehead sedge, dunhead sedge | Carex phaeocephala | Common | Native |
| Dwarf Birch | Betula nana | Common | Native |
| Dwarf Blue Columbine | Aquilegia saximontana | Common | Native |
| Dwarf Blueberry | Vaccinium cespitosum | Common | Native |
| Dwarf Clover | Trifolium nanum | Common | Native |
| Dwarf Goldenrod | Solidago simplex ssp. simplex var. nana | Common | Native |
| dwarf marsh violet | Viola epipsila ssp. repens | Rare | Native |
| Dwarf Spring Beauty, threeleaf bitterroot | Lewisia triphylla | Unknown | Native |
| Dwarf Sunflower | Helianthus pumilus | Common | Native |
| Early Blue Daisy | Erigeron vetensis | Common | Native |
| early sedge, teacher’s sedge | Carex praeceptorum | Common | Native |
| early woodbuttercup, kidney-leaf buttercup, littleleaf buttercup, smallflower buttercup, smallflower crowfoot | Ranunculus abortivus | Unknown | Native |
| Easter Daisy | Townsendia exscapa | Common | Native |
| Eaton’s daisy, Eaton’s fleabane | Erigeron eatonii | Common | Native |
| Eaton’s thistle, mountaintop thistle | Cirsium eatonii | Unknown | Native |
| ebony sedge | Carex ebenea | Common | Native |
| edible valerian, tobacco root, tobaccoroot | Valeriana edulis | Common | Native |
| Eggleston sedge, Eggleston’s sedge | Carex egglestonii | Unknown | Native |
| Elephantella, Little Pink Elephants | Pedicularis groenlandica | Common | Native |
| elk sedge, Geyer’s sedge | Carex geyeri | Common | Native |
| Engelmann Spruce | Picea engelmannii | Common | Native |
| Engelmann’s aster | Eucephalus engelmannii | Common | Native |
| Engelmann’s knotweed | Polygonum douglasii ssp. engelmannii | Common | Native |
| Engelmann’s sedge | Carex engelmannii | Unknown | Unknown |
| Fairybells | Prosartes trachycarpa | Unknown | Native |
| false melic, false melic grass | Schizachne purpurascens | Uncommon | Native |
| False Solomon’s Seal | Maianthemum racemosum ssp. amplexicaule | Common | Native |
| Fanweed | Thlaspi arvense | Unknown | Non-native |
| Fendler Buckthorn | Ceanothus fendleri | Common | Native |
| Fendler Meadowrue | Thalictrum fendleri | Common | Native |
| Fendler Waterleaf | Hydrophyllum fendleri | Common | Native |
| Fendler’s ragwort | Packera fendleri | Common | Native |
| Fendler’s Rockcress | Arabis fendleri | Common | Native |
| Fendler’s Sandwort | Arenaria fendleri var. fendleri | Common | Native |
| Fernleaf Candytuft | Smelowskia calycina | Uncommon | Native |
| fernleaf licoriceroot, fernleaf licorice-root | Ligusticum filicinum | Common | Native |
| Few Flowered Solomon’s Seal | Maianthemum stellatum | Common | Native |
| fewflower meadowrue, fewflower meadow-rue | Thalictrum sparsiflorum | Unknown | Native |
| fewflower spikerush, few-flower spikerush, few-flower spike-rush, fewflowered spikesedge | Eleocharis quinqueflora | Unknown | Native |
| Few-flowered Loco | Oxytropis multiceps | Common | Native |
| Few-flowered Meadowrue | Thalictrum sparsiflorum var. saximontanum | Common | Native |
| Fiddleneck | Amsinckia menziesii | Common | Non-native |
| Field Horsetail | Equisetum arvense | Uncommon | Native |
| field meadow-foxtail, meadow foxtail | Alopecurus pratensis | Unknown | Non-native |
| Field Mouse-ear Chickweed | Cerastium arvense ssp. strictum | Common | Native |
| field sagewort | Artemisia campestris ssp. borealis var. borealis | Common | Native |
| Field sagewort | Artemisia campestris ssp. borealis var. scouleriana | Uncommon | Native |
| Field Vetch | Astragalus miser var. oblongifolius | Common | Native |
| Figwort | Scrophularia lanceolata | Common | Native |
| Filaree | Erodium cicutarium | Unknown | Non-native |
| filiform rockjasmine, slender rockjasmine, slender-stemmed androsace | Androsace filiformis | Unknown | Native |
| fir club moss, fir clubmoss | Huperzia selago | Uncommon | Native |
| Fireweed | Chamerion angustifolium ssp. circumvagum | Common | Native |
| flattop pussytoes, flat-top pussytoes, meadow everlasting | Antennaria corymbosa | Common | Native |
| fleshy starwort, thickleaved chickweed | Stellaria crassifolia | Unknown | Native |
| fowl blue grass, fowl bluegrass | Poa palustris | Common | Native |
| fowl manna grass, fowl mannagrass | Glyceria striata | Common | Native |
| Foxtail | Alopecurus aequalis | Common | Native |
| Fragrant Bedstraw | Galium triflorum | Common | Native |
| Fremont Chenopod | Chenopodium fremontii | Common | Native |
| fringed brome | Bromus ciliatus var. ciliatus | Common | Native |
| Fringed Gentian | Gentianopsis barbellata | Uncommon | Native |
| Fringed Gentian | Gentianopsis thermalis | Common | Native |
| fringed willowherb, glandular willowherb, glandular willowweed | Epilobium ciliatum ssp. glandulosum | Common | Native |
| fringed willowherb, hairy willowherb, hairy willowweed | Epilobium ciliatum | Unknown | Native |
| Gayfeather | Liatris punctata | Common | Native |
| Geyer Onion | Allium geyeri | Common | Native |
| Geyer’s willow | Salix geyeriana | Common | Native |
| giant goldenrod | Solidago gigantea | Unknown | Native |
| giant lousewort, gray lousewort | Pedicularis procera | Common | Native |
| glaber daisy, rockslide yellow fleabane | Erigeron leiomerus | Unknown | Native |
| glandular willowherb, Hall’s willowweed | Epilobium halleanum | Unknown | Native |
| Globe Anemone | Anemone multifida | Common | Native |
| Globe-flower | Trollius albiflorus | Common | Native |
| goldbloom saxifrage | Saxifraga chrysantha | Common | Native |
| Golden Banner | Thermopsis divaricarpa | Common | Native |
| Golden Banner | Thermopsis montana | Common | Native |
| Golden Draba | Draba aurea | Common | Native |
| Golden Saxifrage | Chrysosplenium tetrandrum | Common | Native |
| golden sedge, golden-fruit sedge | Carex aurea | Unknown | Native |
| Golden Smoke | Corydalis aurea | Common | Native |
| Golden-glow | Rudbeckia laciniata var. laciniata | Common | Native |
| graceful buttercup | Ranunculus inamoenus | Common | Native |
| graceful cinquefoil, northwest cinquefoil, slender cinquefoil | Potentilla gracilis | Unknown | Native |
| Grass Fern | Asplenium septentrionale | Uncommon | Native |
| grassleaf speedwell, grass-leaf speedwell, marsh speedwell, skullcap speedwell | Veronica scutellata | Uncommon | Native |
| grasslike starwort | Stellaria graminea var. graminea | Unknown | Native |
| Grass-of-Parnassus | Parnassia fimbriata | Common | Native |
| Grass-of-Parnassus | Parnassia palustris var. montanensis | Uncommon | Native |
| grassyslope sedge | Carex oreocharis | Rare | Native |
| gray aster | Eurybia glauca | Common | Native |
| Grays Angelica | Angelica grayi | Common | Native |
| Gray’s peak whitlow-grass | Draba grayana | Common | Native |
| greater creeping spearwort | Ranunculus flammula var. filiformis | Unknown | Unknown |
| greater creeping spearwort, Trailing Buttercup | Ranunculus flammula var. reptans | Unknown | Native |
| Green Coral-root | Corallorrhiza trifida | Uncommon | Native |
| green muhly, marsh muhly | Muhlenbergia racemosa | Uncommon | Native |
| green needlegrass | Nassella viridula | Uncommon | Native |
| green rubber rabbitbrush, rubber rabbitbrush | Ericameria nauseosa ssp. nauseosa var. glabrata | Common | Native |
| Greenes Daisy | Erigeron formosissimus | Common | Native |
| Green-flowered Pyrola | Pyrola chlorantha | Common | Native |
| greenleaf willow, shining willow | Salix lucida ssp. caudata | Common | Native |
| ground-cherry nightshade | Solanum physalifolium | Rare | Non-native |
| hair sedge, hairlike sedge, hair-like sedge | Carex capillaris | Uncommon | Native |
| hairy evening primrose, hairy eveningprimrose, hairy evening-primrose | Oenothera villosa | Unknown | Native |
| hairy evening primrose, hairy eveningprimrose, hairy evening-primrose | Oenothera villosa ssp. strigosa | Uncommon | Native |
| hairy false goldaster, hairy false goldenaster, hairy goldaster, hairy goldenaster | Heterotheca villosa | Common | Native |
| hairy hedgenettle | Stachys pilosa var. pilosa | Unknown | Native |
| Hall’s beardtongue | Penstemon hallii | Uncommon | Native |
| Halls Catchfly | Silene scouleri ssp. hallii | Unknown | Native |
| Harbour’s beardtongue | Penstemon harbourii | Unknown | Native |
| Harebell | Campanula rotundifolia | Common | Native |
| Hare’s Ear Mustard | Conringia orientalis | Uncommon | Non-native |
| Hawthorn | Crataegus succulenta | Uncommon | Native |
| Heal-all | Prunella vulgaris | Common | Native |
| Heartleaf Arnica | Arnica cordifolia | Common | Native |
| Heart-leaved Buttercup | Ranunculus cardiophyllus | Common | Native |
| Heart-leaved Twayblade | Listera cordata ssp. nephrophylla | Common | Native |
| Hemlock-Parsley | Conioselinum scopulorum | Common | Native |
| Hepburn’s sedge | Carex nardina var. hepburnii | Unknown | Unknown |
| Hesperostipa, needle and thread, needleandthread | Hesperostipa comata | Common | Native |
| Highbush Cranberry | Viburnum edule | Common | Native |
| Hoary alyssum | Berteroa incana | Common | Non-native |
| hoary groundsel | Packera werneriifolia | Unknown | Native |
| Hoary Tansy Mustard | Descurainia incana ssp. incisa | Unknown | Native |
| Holboell False Arabis, Second Rockcress | Arabis holboellii var. retrofracta | Common | Native |
| Holly Fern | Polystichum lonchitis | Uncommon | Native |
| Holly-grape | Mahonia repens | Common | Native |
| Holm sedge, Holm’s sedge, nerve sedge | Carex heteroneura var. chalciolepis | Common | Native |
| Holm’s groundsel, Holm’s ragwort | Senecio amplectens var. holmii | Common | Native |
| Holm’s Rocky Mountain sedge, mountain sedge | Carex scopulorum | Common | Native |
| Honey Polemonium | Polemonium brandegeei | Common | Native |
| hood sedge, Hood’s sedge | Carex hoodii | Unknown | Native |
| Hook Violet | Viola adunca | Common | Native |
| hooked buttercup, woodland buttercup | Ranunculus uncinatus | Unknown | Native |
| Hooker’s alpine oat grass, spikeoat | Helictotrichon hookeri | Unknown | Unknown |
| Hooker’s sandwort | Arenaria hookeri ssp. hookeri | Unknown | Unknown |
| Hooker’s Townsend daisy, Hooker’s townsend-daisy, Hooker’s townsendia | Townsendia hookeri | Unknown | Native |
| Horehound | Marrubium vulgare | Uncommon | Non-native |
| horned spurge, shorthorn spurge | Euphorbia brachycera | Unknown | Native |
| Hornemann’s willowherb, Hornemann’s willowweed | Epilobium hornemannii | Common | Native |
| horse cinquefoil, woolly cinquefoil | Potentilla hippiana | Common | Native |
| Horseweed | Conyza canadensis | Common | Non-native |
| Houndstongue | Cynoglossum officinale | Common | Non-native |
| Huckleberry, Whortleberry | Vaccinium myrtillus ssp. oreophilum | Common | Native |
| Huron green orchid | Platanthera huronensis | Unknown | Native |
| Idaho bentgrass, Idaho redtop | Agrostis idahoensis | Unknown | Native |
| Idaho fescue | Festuca idahoensis | Unknown | Unknown |
| Idaho licorice-root | Ligusticum tenuifolium | Unknown | Unknown |
| Indian ricegrass | Achnatherum hymenoides | Common | Native |
| Indiangrass | Sorghastrum nutans | Unknown | Unknown |
| inland bluegrass | Poa nemoralis ssp. interior | Common | Native |
| inland rush | Juncus interior | Common | Native |
| inland sedge | Carex interior | Unknown | Native |
| intermediate wheatgrass | Thinopyrum intermedium | Unknown | Native |
| Jack-go-to-bed-at-noon, meadow salsify | Tragopogon pratensis | Unknown | Unknown |
| Jacobs Ladder | Polemonium pulcherrimum ssp. delicatum | Common | Native |
| James’ buckwheat | Eriogonum jamesii var. flavescens | Common | Native |
| James Saxifrage | Telesonix jamesii | Unknown | Native |
| Japanese brome, Japanese bromegrass, Japanese chess | Bromus japonicus | Uncommon | Non-native |
| Jeweled blazingstar | Mentzelia speciosa | Common | Native |
| Jim Hill Mustard | Sisymbrium altissimum | Common | Non-native |
| jointed rush, knotted rush | Juncus nodosus | Unknown | Native |
| Jones’ sedge | Carex jonesii | Unknown | Unknown |
| Junegrass | Koeleria macrantha | Common | Native |
| Kellogg’s knotweed | Polygonum polygaloides ssp. kelloggii | Common | Native |
| Kentucky Bluegrass | Poa pratensis | Common | Non-native |
| Kentucky bluegrass | Poa pratensis ssp. pratensis | Unknown | Native |
| King’s Campion | Silene kingii | Common | Native |
| King’s Crown | Rhodiola integrifolia | Common | Native |
| Kittentail | Besseya plantaginea | Uncommon | Native |
| Koeniga | Koenigia islandica | Uncommon | Native |
| Kotzebue’s grass of Parnassus, Kotzebue’s grass-of-Parnassus | Parnassia kotzebuei | Uncommon | Native |
| Lady’s Tresses | Spiranthes romanzoffiana | Common | Native |
| Lambstongue Groundsel | Senecio integerrimus | Common | Native |
| lanceleaf draba | Draba breweri var. cana | Common | Native |
| lanceleaf grapefern, lance-leaf moonwort | Botrychium lanceolatum var. lanceolatum | Unknown | Native |
| lanceleaf grapefern, lance-leaf moonwort, triangle moonwort | Botrychium lanceolatum | Unknown | Native |
| lancepod draba | Draba lonchocarpa | Unknown | Native |
| larchleaf beardtongue | Penstemon laricifolius ssp. exilifolius | Unknown | Unknown |
| Large Clustered Penstemon | Penstemon rydbergii | Common | Native |
| largeflower Townsend daisy | Townsendia grandiflora | Unknown | Unknown |
| late purple aster | Symphyotrichum patens | Unknown | Unknown |
| Laxmann’s milkvetch | Astragalus laxmannii | Common | Native |
| leafy goosefoot | Chenopodium foliosum | Unknown | Native |
| Leafy Polemonium | Polemonium foliosissimum | Unknown | Native |
| leafy spurge, Russian leafy spurge, spurge, wolf’s milk | Euphorbia esula var. uralensis | Uncommon | Non-native |
| leafy tussock sedge, water sedge | Carex aquatilis var. aquatilis | Common | Native |
| Least Pyrola | Pyrola minor | Common | Native |
| lesser blackscale sedge | Carex atrosquama | Unknown | Unknown |
| lesser panicled sedge, lesser tussock sedge | Carex diandra | Unknown | Native |
| Letterman bluegrass, Letterman’s bluegrass | Poa lettermanii | Uncommon | Native |
| Letterman needlegrass, Letterman’s needlegrass | Achnatherum lettermanii | Unknown | Native |
| Limber Pine | Pinus flexilis | Common | Native |
| Limber Vetch | Astragalus flexuosus | Common | Native |
| little bluestem | Schizachyrium scoparium | Unknown | Unknown |
| little catseye, little cryptantha, small cryptantha | Cryptantha minima | Unknown | Native |
| little ricegrass | Piptatherum exiguum | Unknown | Native |
| little sagebrush | Artemisia arbuscula ssp. longiloba | Unknown | Unknown |
| Littleleaf Alumroot | Heuchera parvifolia | Common | Native |
| littleleaf pussytoes, Rocky Mountain pussytoes, small leaf everlasting, smallleaf pussytoes | Antennaria microphylla | Unknown | Native |
| little-leaf pussytoes, Rocky Mountain pussytoes, small leaf pussytoes, smalleaf pussytoes, small-leaf pussytoes | Antennaria parvifolia | Unknown | Native |
| littleseed ricegrass | Piptatherum micranthum | Unknown | Unknown |
| Locoweed | Oxytropis lambertii | Common | Native |
| Lodgepole Pine | Pinus contorta ssp. latifolia | Common | Native |
| long-bract frog orchid | Coeloglossum viride ssp. bracteatum | Unknown | Native |
| longbract frog orchid, long-bract frog orchid | Coeloglossum viride var. virescens | Unknown | Unknown |
| Long-leaved Stitchwort | Stellaria longifolia | Common | Native |
| longstalk clover, long-stalk clover | Trifolium longipes | Unknown | Native |
| longstalk starwort, long-stalk starwort | Stellaria longipes | Unknown | Native |
| long-style rush, long-styled rush | Juncus longistylis | Common | Native |
| long-tube evening primrose, long-tube evening-primrose, yellow evening primrose, yellow eveningprimrose, yellow evening-primrose | Oenothera flava | Unknown | Native |
| Lovage | Ligusticum porteri | Common | Native |
| low cudweed, marsh cudweed | Gnaphalium uliginosum | Common | Native |
| Low Penstemon | Penstemon virens | Common | Native |
| Lyall haplopappus | Tonestus lyallii | Uncommon | Native |
| Macoun Buttercup | Ranunculus macounii | Common | Native |
| Maidenhair Spleenwort | Asplenium trichomanes | Rare | Native |
| Maiden’s Tears | Silene vulgaris | Uncommon | Non-native |
| Male Fern | Dryopteris filix-mas | Uncommon | Native |
| manybranched pepperweed, pepperweed | Lepidium ramosissimum | Common | Native |
| Many-flowered Monkeyflower | Mimulus floribundus | Common | Native |
| manyray goldenrod, Rocky Mountain goldenrod | Solidago multiradiata var. scopulorum | Unknown | Native |
| Marestail | Hippuris vulgaris | Common | Native |
| Marin County bedstraw | Galium spurium | Unknown | Unknown |
| Marsh felwort | Lomatogonium rotatum | Common | Native |
| marsh skullcap | Scutellaria galericulata | Uncommon | Native |
| Marsh sowthistle, Swamp sow-thistle | Sonchus arvensis ssp. uliginosus | Uncommon | Non-native |
| marsh violet | Viola palustris | Unknown | Native |
| Marsh-Marigold | Caltha leptosepala ssp. leptosepala | Common | Native |
| mat muhly, soft-leaf muhly | Muhlenbergia richardsonis | Common | Native |
| matted saxifrage | Saxifraga bronchialis ssp. austromontana | Common | Native |
| Mayweed chamomile | Anthemis cotula | Common | Non-native |
| Meadow anemone | Anemone canadensis | Unknown | Native |
| Meadow Arnica | Arnica fulgens | Common | Native |
| meadow barley | Hordeum brachyantherum ssp. brachyantherum | Unknown | Native |
| meadow deathcamas | Zigadenus venenosus var. venenosus | Unknown | Native |
| Meadow Foxtail | Hordeum jubatum ssp. jubatum | Common | Native |
| meadow horsetail | Equisetum pratense | Uncommon | Native |
| meadow popcorn-flower | Plagiobothrys scouleri var. hispidulus | Common | Native |
| meadow sedge, northern meadow sedge | Carex praticola | Common | Native |
| meadow thistle | Cirsium scariosum | Unknown | Native |
| Mertens’ rush | Juncus mertensianus | Common | Native |
| Mexican dock | Rumex salicifolius var. mexicanus | Common | Native |
| Miner’s candle | Cryptantha virgata | Common | Native |
| Mingan Island grapefern, Mingan moonwort | Botrychium minganense | Unknown | Native |
| mintleaf bergamot | Monarda fistulosa ssp. fistulosa var. menthifolia | Unknown | Unknown |
| Mistletoe | Arceuthobium americanum | Unknown | Native |
| Mistletoe | Arceuthobium cyanocarpum | Unknown | Native |
| Mistletoe | Arceuthobium vaginatum | Unknown | Native |
| Modest Mallow | Sidalcea candida | Common | Native |
| Modoc bog orchid, slender bog orchid | Platanthera stricta | Common | Native |
| Monkshood | Aconitum columbianum | Common | Native |
| Monolepis | Monolepis nuttalliana | Unknown | Native |
| Montana wheatgrass | Elymus albicans | Unknown | Unknown |
| Monument Plant | Frasera speciosa | Common | Native |
| Moonwort | Botrychium lunaria | Unknown | Native |
| Morton’s alpineoatgrass | Helictotrichon mortonianum | Common | Native |
| Moss Pink | Silene acaulis ssp. subacaulescens | Common | Native |
| Mountain Ball Cactus | Pediocactus simpsonii var. minor | Common | Native |
| Mountain Beardtongue | Penstemon glaber | Common | Native |
| mountain bentgrass | Agrostis variabilis | Unknown | Native |
| mountain brome, Rescue Grass | Bromus carinatus | Common | Non-native |
| mountain camphorweed, rockyscree false goldenaster, rockyscree falsegoldenaster | Heterotheca fulcrata | Common | Native |
| mountain fescue, Rocky Mountain fescue | Festuca saximontana | Common | Native |
| Mountain Figwort | Pedicularis racemosa ssp. alba | Common | Native |
| Mountain Gooseberry | Ribes inerme | Common | Native |
| Mountain Gumweed | Grindelia subalpina | Common | Native |
| Mountain Hair Grass | Vahlodea atropurpurea | Unknown | Native |
| mountain larkspur | Delphinium ramosum | Common | Native |
| Mountain Maple/Rocky Mt. Maple | Acer glabrum | Common | Native |
| mountain muhly | Muhlenbergia montana | Common | Native |
| mountain ricegrass | Piptatherum pungens | Unknown | Native |
| mountain rush | Juncus balticus var. montanus | Common | Native |
| Mountain Sagebrush | Artemisia tridentata ssp. vaseyana | Common | Native |
| mountain snowberry | Symphoricarpos oreophilus | Unknown | Unknown |
| Mountain Spray | Holodiscus dumosus | Unknown | Native |
| mountain tansy-mustard | Descurainia incana ssp. incana | Common | Native |
| mountain thistle | Cirsium scopulorum | Unknown | Native |
| Mountain Willow | Salix monticola | Common | Native |
| Mountain-ash | Sorbus scopulina | Uncommon | Native |
| Mountain-lover | Paxistima myrsinites | Unknown | Native |
| Mountain-mahogany | Cercocarpus montanus | Unknown | Native |
| Mouseear chickweed | Cerastium fontanum | Unknown | Native |
| Mt. Albert goldenrod, New Mexican goldenrod | Solidago simplex ssp. simplex var. simplex | Unknown | Native |
| mud sedge | Carex limosa | Rare | Native |
| Mudwort | Limosella aquatica | Common | Native |
| Musk Thistle | Carduus nutans ssp. macrolepis | Abundant | Non-native |
| Muskroot | Adoxa moschatellina | Rare | Native |
| mutton grass, muttongrass | Poa fendleriana | Common | Native |
| Narcissus Anemone | Anemone narcissiflora | Common | Native |
| narrowleaf birdsfoot trefoil, narrowleaf bird’s-foot trefoil | Lotus tenuis | Unknown | Native |
| narrow-leaf four-o’clock | Mirabilis linearis | Common | Native |
| narrowleaf goosefoot, narrowleaf lambsquarters, narrowleaved goosefoot, slimleaf goosefoot, slimleaf lambsquarters | Chenopodium leptophyllum | Unknown | Native |
| narrowleaf willow | Salix exigua | Unknown | Unknown |
| Narrow-leaved Bur-reed | Sparganium angustifolium | Common | Native |
| Narrow-leaved Cattail | Typha angustifolia | Unknown | Native |
| Narrow-leaved Cottonwood | Populus angustifolia | Common | Native |
| Narrow-leaved Paintbrush, Wyoming Paintbrush | Castilleja linariifolia | Common | Native |
| narrowspike reedgrass, slim-stem reed grass, slimstem reedgrass | Calamagrostis stricta | Unknown | Native |
| native sedge, spring sedge | Carex vernacula | Common | Native |
| Nebraska sedge | Carex nebrascensis | Common | Native |
| needle spikerush, needle spikesedge | Eleocharis acicularis | Common | Native |
| needleleaf sedge | Carex duriuscula | Common | Native |
| Nelson sedge, Nelson’s sedge | Carex nelsonii | Common | Native |
| Nelsons Larkspur | Delphinium nuttallianum | Common | Native |
| netseed lambsquarters, pigseed goosefoot, pitseed goosefoot, pit-seed goosefoot | Chenopodium berlandieri | Common | Native |
| Nevada rush, Sierra rush | Juncus nevadensis | Unknown | Native |
| Ninebark | Physocarpus monogynus | Common | Native |
| nodding bluegrass | Poa reflexa | Common | Native |
| Nodding Onion | Allium cernuum | Common | Native |
| nodding ragwort | Senecio bigelovii | Unknown | Native |
| Nodding Saxifrage | Saxifraga cernua | Common | Native |
| Northern Bedstraw | Galium boreale | Common | Native |
| northern bog aster | Symphyotrichum boreale | Rare | Native |
| northern chickweed, northern starwort | Stellaria calycantha | Unknown | Native |
| northern green orchid | Limnorchis hyperborea | Unknown | Native |
| northern green orchid | Platanthera hyperborea var. hyperborea | Unknown | Unknown |
| northern listera, northern twayblade | Listera borealis | Rare | Native |
| Northern Manna Grass | Glyceria borealis | Uncommon | Native |
| Northern Paintbrush | Castilleja sulphurea | Common | Native |
| northern white rush | Juncus albescens | Unknown | Native |
| northern white violet, white violet | Viola renifolia | Uncommon | Native |
| Northwest Territory sedge | Carex utriculata | Common | Native |
| Norway Cinquefoil | Potentilla norvegica | Unknown | Non-native |
| Norway sedge, Scandinavian sedge | Carex norvegica | Unknown | Native |
| Nuttall alkaligrass, Nuttall’s alkaligrass | Puccinellia nuttalliana | Common | Native |
| Nuttall Evening-primrose | Oenothera nuttallii | Common | Native |
| Oak Fern | Gymnocarpium disjunctum | Uncommon | Native |
| oakleaf goosefoot, oak-leaf goosefoot | Chenopodium glaucum | Common | Native |
| oil shale fescue | Festuca dasyclada | Unknown | Unknown |
| old man’s whiskers | Geum triflorum var. triflorum | Common | Native |
| oneflowered broomrape | Orobanche uniflora | Unknown | Native |
| One-leaved Bog-orchid | Platanthera obtusata | Uncommon | Native |
| One-sided Pyrola | Orthilia secunda | Common | Native |
| Orange Hawkweed | Hieracium aurantiacum | Rare | Non-native |
| Orchard Grass | Dactylis glomerata | Uncommon | Non-native |
| Oregon cliff fern, Oregon woodsia, western cliff fern | Woodsia oregana | Common | Native |
| Oswego-tea, wild bergamot, wild bergamot beebalm | Monarda fistulosa ssp. fistulosa | Unknown | Native |
| ovalhead sedge, smallwing sedge | Carex microptera | Common | Native |
| Owl-Clover | Orthocarpus luteus | Common | Native |
| Ox-eye Daisy | Leucanthemum vulgare | Common | Non-native |
| Pacific Aster | Symphyotrichum ascendens | Common | Native |
| pale agoseris | Agoseris glauca var. glauca | Unknown | Native |
| pale agoseris, pale goat-chicory | Agoseris glauca var. dasycephala | Unknown | Native |
| Pale alyssum | Alyssum alyssoides | Common | Non-native |
| pale blue-eyed grass | Sisyrinchium pallidum | Rare | Native |
| Pale Daisy | Erigeron eximius | Common | Native |
| pale false mannagrass | Torreyochloa pallida var. pauciflora | Unknown | Native |
| panicled bulrush, red-tinge bulrush, smallfruit bulrush | Scirpus microcarpus | Unknown | Native |
| parrot’s-beak, sickletop lousewort | Pedicularis racemosa | Unknown | Native |
| Parry Clover | Trifolium parryi | Common | Native |
| Parry danthonia, Parry oatgrass, Parry’s danthonia, Parry’s oatgrass | Danthonia parryi | Common | Native |
| Parry Harebell | Campanula parryi | Common | Native |
| Parry Lousewort | Pedicularis parryi | Common | Native |
| Parry Primrose | Primula parryi | Common | Native |
| Parry rush, Parry’s rush | Juncus parryi | Unknown | Native |
| Parry sedge, Parry’s sedge | Carex parryana | Uncommon | Native |
| Parry Vetch | Astragalus parryi | Common | Native |
| Parry’s clover | Trifolium parryi ssp. salictorum | Unknown | Native |
| Parry’s gentian | Gentiana parryi | Common | Native |
| Parry’s goldenrod | Oreochrysum parryi | Common | Native |
| Pasque Flower | Pulsatilla patens ssp. multifida | Common | Native |
| Patterson bluegrass+B2198P, Patterson’s bluegrass | Poa abbreviata ssp. pattersonii | Unknown | Native |
| Patterson Mountain-sage | Artemisia pattersonii | Common | Native |
| Payson’s lousewort | Pedicularis bracteosa ssp. paysoniana | Common | Native |
| Payson’s lousewort | Pedicularis bracteosa var. paysoniana | Unknown | Native |
| Pearly Everlasting | Anaphalis margaritacea | Common | Native |
| Pennsylvania cinquefoil, prairie cinquefoil | Potentilla pensylvanica | Common | Native |
| Pennsylvania pellitory | Parietaria pensylvanica | Unknown | Native |
| Perennial scouring-rush | Equisetum hyemale | Unknown | Native |
| Pin cherry | Prunus pensylvanica var. pensylvanica | Uncommon | Native |
| Pine Dropseed | Blepharoneuron tricholepis | Unknown | Native |
| pine needlegrass | Achnatherum pinetorum | Unknown | Unknown |
| pineapple-weed | Matricaria discoidea | Unknown | Native |
| Pinedrops | Pterospora andromedea | Common | Native |
| Pinesap | Monotropa hypopithys | Uncommon | Native |
| pineywoods geranium | Geranium caespitosum var. caespitosum | Unknown | Native |
| Pink microsteris | Phlox gracilis ssp. humilis | Common | Native |
| pink wintergreen, Swamp Pyrola | Pyrola asarifolia ssp. asarifolia | Common | Native |
| Pinnate Grape Fern | Botrychium pinnatum | Uncommon | Native |
| Pinnate-leaved Daisy | Erigeron pinnatisectus | Common | Native |
| Pipsissewa | Chimaphila umbellata ssp. occidentalis | Uncommon | Native |
| plains bluegrass | Poa arida | Unknown | Unknown |
| Planeleaf Willow | Salix planifolia | Common | Native |
| pleated gentian, Rocky Mountain gentian | Gentiana affinis | Common | Native |
| Poison Hemlock | Conium maculatum | Uncommon | Non-native |
| Ponderosa Pine | Pinus ponderosa ssp. scopulorum | Common | Native |
| Pondweed | Potamogeton alpinus | Unknown | Native |
| Pondweed | Potamogeton gramineus | Common | Native |
| Pondweed | Potamogeton natans | Unknown | Native |
| Pondweed | Potamogeton pusillus | Unknown | Native |
| Pondweed | Stuckenia filiformis ssp. alpinus | Common | Native |
| Pondweed | Stuckenia pectinatus | Common | Native |
| Porsildraba | Draba porsildii | Rare | Native |
| Porter Aster, Smooth White Aster | Symphyotrichum porteri | Common | Native |
| Porter brome | Bromus porteri | Common | Native |
| poverty oatgrass | Danthonia spicata | Unknown | Unknown |
| Prairie Coneflower | Ratibida columnifera | Common | Native |
| prairie spiderwort, spiderwort | Tradescantia occidentalis | Unknown | Native |
| prairie willow | Salix humilis var. tristis | Unknown | Native |
| pretty Jacob’s-ladder, skunkleaf polemonium | Polemonium pulcherrimum | Unknown | Native |
| Prickly Currant | Ribes lacustre | Uncommon | Native |
| Prickly Poppy | Argemone polyanthemos | Common | Native |
| Prickly-pear | Opuntia polyacantha | Common | Native |
| Prostrate Pigweed | Amaranthus blitoides | Unknown | Native |
| Puccoon | Lithospermum incisum | Common | Native |
| Puccoon | Lithospermum multiflorum | Common | Native |
| pullup muhly | Muhlenbergia filiformis | Unknown | Native |
| Pumpelly’s brome | Bromus inermis ssp. pumpellianus | Unknown | Native |
| Purple Avens | Geum rivale | Common | Native |
| Purple Fringe | Phacelia sericea | Common | Native |
| Purple Lousewort | Pedicularis crenulata | Common | Native |
| purple oniongrass | Melica spectabilis | Unknown | Native |
| purple reedgrass | Calamagrostis purpurascens | Common | Native |
| Purple Thistle | Cirsium undulatum | Common | Native |
| Pussytoes | Antennaria rosea | Common | Native |
| Pygmy Bitterroot | Lewisia pygmaea | Common | Native |
| Pygmy Buttercup | Ranunculus pygmaeus | Uncommon | Native |
| pygmy clover | Trifolium longipes ssp. pygmaeum | Unknown | Native |
| pygmy gentian | Gentiana prostrata | Unknown | Native |
| pygmy goldenweed | Tonestus pygmaeus | Common | Native |
| Pyrenean sedge | Carex pyrenaica ssp. micropoda | Unknown | Unknown |
| Quaking Aspen | Populus tremuloides | Common | Native |
| Rabbitbrush | Chrysothamnus viscidiflorus ssp. lanceolatus | Common | Native |
| Rabbitbrush | Ericameria parryi var. parryi | Common | Native |
| Ragleaf Bahia | Bahia dissecta | Common | Native |
| Rag-weed, Skeletonleaf bursage | Ambrosia tomentosa | Uncommon | Non-native |
| Rattlesnake-plantain | Goodyera oblongifolia | Uncommon | Native |
| Rattlesnakeroot | Prenanthes racemosa ssp. multiflora | Uncommon | Native |
| ravine fescue, red fescue | Festuca rubra | Unknown | Native |
| Rayless Arnica | Arnica mollis | Common | Native |
| Rayless Arnica | Arnica parryi ssp. parryi | Common | Native |
| Red Baneberry | Actaea rubra ssp. arguta | Common | Native |
| Red Catchfly | Silene latifolia ssp. alba | Uncommon | Non-native |
| Red Clover | Trifolium pratense | Common | Non-native |
| Red Elderberry, Red-berrried Elder | Sambucus racemosa var. racemosa | Common | Native |
| red goosefoot | Chenopodium rubrum | Unknown | Native |
| red lovegrass | Eragrostis secundiflora ssp. oxylepis | Unknown | Native |
| Red Raspberry | Rubus idaeus ssp. strigosus | Common | Native |
| Red Windflower | Anemone multifida ssp. saxicola | Uncommon | Native |
| Red-osier, redosier dogwood | Cornus sericea ssp. sericea | Common | Native |
| Redtop | Agrostis gigantea | Uncommon | Non-native |
| Redwool Plantain | Plantago eriopoda | Common | Native |
| reed canary grass, reed canarygrass | Phalaris arundinacea | Uncommon | Native |
| Reflected moonwort | Botrychium echo | Rare | Native |
| ribbonleaf pondweed | Potamogeton epihydrus | Unknown | Native |
| rice cutgrass | Leersia oryzoides | Unknown | Unknown |
| Richardson needlegrass, Richardson’s needlegrass | Achnatherum richardsonii | Rare | Native |
| River Birch, Water Birch | Betula occidentalis | Common | Native |
| riverbank sedge | Carex stenoptila | Unknown | Native |
| Rock Ragwort | Senecio fremontii var. blitoides | Common | Native |
| Rock Sedge | Carex saxatilis | Uncommon | Native |
| Rock-jasmine | Androsace chamaejasme ssp. carinata | Common | Native |
| Rocky Mountain Bee Plant | Cleome serrulata | Common | Native |
| Rocky Mountain blazing star, Rocky Mountain gayfeather, strap-style gayfeather | Liatris ligulistylis | Unknown | Native |
| Rocky mountain cinquefoil | Potentilla rupincola | Rare | Native |
| Rocky Mountain cliff fern, Rocky Mountain woodsia | Woodsia scopulina | Common | Native |
| Rocky Mountain cowlily, Rocky Mountain pondlily, Rocky Mountain pond-lily, yellow pond-lily | Nuphar lutea ssp. polysepala | Unknown | Native |
| Rocky Mountain draba, snowbed draba, snowbed whitlowgrass, snowbed whitlow-grass | Draba crassifolia | Common | Native |
| Rocky Mountain Jacob’s-ladder | Polemonium confertum | Unknown | Native |
| Rocky Mountain Juniper, Rocky Mt. Red Cedar | Juniperus scopulorum | Common | Native |
| Rocky Mountain Loco | Oxytropis sericea | Common | Native |
| Rocky Mountain monkeyflower, Weber monkey-flower | Mimulus gemmiparus | Uncommon | Native |
| Rocky Mountain polypody | Polypodium saximontanum | Unknown | Native |
| Rocky Mountain pussytoes | Antennaria media | Common | Native |
| Rocky Mountain Red Columbine | Aquilegia elegantula | Common | Native |
| Rocky Mountain rush | Juncus saximontanus | Common | Native |
| Rocky Mountain willowherb, Rocky Mountain willowweed | Epilobium saximontanum | Common | Native |
| Rocky Mountain-sage | Artemisia scopulorum | Common | Native |
| Rocky Mt. Iris, Blue Flag | Iris missouriensis | Common | Native |
| rolled gumweed | Grindelia revoluta | Unknown | Native |
| Rose Crown | Rhodiola rhodantha | Common | Native |
| Ross sedge, Ross’ sedge, Ross’s sedge, shortstemmed sedge | Carex rossii | Common | Native |
| Rosy Paintbrush | Castilleja rhexiifolia | Common | Native |
| rough bluegrass | Poa trivialis | Unknown | Unknown |
| Rough White Aster | Symphyotrichum falcatum | Common | Native |
| roughfruit fairybells, rough-fruit fairybells, wartberry fairybells | Disporum trachycarpum | Unknown | Unknown |
| roughleaf ricegrass, white-grain mountain-rice gras | Oryzopsis asperifolia | Common | Native |
| Russian Thistle, Tumbleweed | Salsola collina | Common | Non-native |
| Russian Wild-rye | Psathyrostachys juncea | Uncommon | Non-native |
| Russian-thistle | Salsola tragus | Common | Non-native |
| Rydberg Arnica | Arnica rydbergii | Common | Native |
| Ryegrass | Lolium perenne | Unknown | Non-native |
| Ryegrass | Lolium pratense | Uncommon | Non-native |
| saffron ragwort | Packera crocata | Common | Native |
| Sagebrush Buttercup | Ranunculus glaberrimus var. ellipticus | Common | Native |
| Sagewort | Artemisia campestris ssp. borealis | Uncommon | Native |
| Salsify | Tragopogon dubius | Uncommon | Non-native |
| Sand Aster | Symphyotrichum ericoides | Uncommon | Native |
| sand dropseed | Sporobolus cryptandrus | Common | Native |
| Sand Lily | Leucocrinum montanum | Common | Native |
| Sand spurry | Spergularia rubra | Unknown | Non-native |
| sand violet | Viola affinis | Unknown | Unknown |
| Sandwort | Sagina saginoides | Common | Native |
| Sanicle, Snakeroot | Sanicula marilandica | Uncommon | Native |
| Scarlet Gilia | Ipomopsis aggregata ssp. aggregata | Common | Native |
| scarlet gilia | Ipomopsis aggregata ssp. collina | Common | Native |
| scarlet gilia, skyrocket gilia | Ipomopsis aggregata | Unknown | Native |
| Scarlet Paintbrush | Castilleja miniata | Common | Native |
| scentbottle | Platanthera dilatata var. albiflora | Unknown | Unknown |
| Scentless chamomile | Tripleurospermum perforata | Unknown | Non-native |
| Scorpion Weed | Phacelia hastata | Common | Native |
| Scotch thistle | Onopordum tauricum | Rare | Non-native |
| Scouler Willow | Salix scouleriana | Common | Native |
| Scribner’s needlegrass | Achnatherum scribneri | Uncommon | Native |
| Scribner’s wild rye, Scribner’s wildrye, spreading wheatgrass | Elymus scribneri | Common | Native |
| Sego Lily | Calochortus gunnisonii | Common | Native |
| Shadbush | Amelanchier alnifolia | Common | Native |
| sharpleaf valerian | Valeriana acutiloba var. acutiloba | Common | Native |
| sheep cinquefoil | Potentilla ovina | Unknown | Native |
| sheep fescue | Festuca ovina | Uncommon | Non-native |
| sheep sedge, smallhead sedge | Carex illota | Unknown | Native |
| Shepherd’s Purse | Capsella bursa-pastoris | Common | Non-native |
| shining willow | Salix lucida | Unknown | Native |
| Shooting-star | Dodecatheon pulchellum | Common | Native |
| shore buttercup | Ranunculus cymbalaria | Common | Native |
| Shortflowered Paintbrush | Castilleja puberula | Common | Native |
| shortfruit evening primrose | Oenothera brachycarpa | Unknown | Native |
| shortleaved sedge | Carex misandra | Uncommon | Native |
| Short-styled Onion | Allium brevistylum | Unknown | Native |
| showy alpine ragwort | Senecio amplectens var. amplectens | Unknown | Native |
| Showy Draba | Draba spectabilis | Unknown | Native |
| showy goldeneye, showy goldeneyes | Heliomeris multiflora var. multiflora | Unknown | Native |
| showy goldenrod | Solidago speciosa var. pallida | Uncommon | Native |
| Showy Milkweed | Asclepias speciosa | Common | Native |
| showy sedge, southwestern showy sedge | Carex bella | Unknown | Native |
| Shrubby Cinquefoil | Dasiphora floribunda | Common | Native |
| Sibbaldia | Sibbaldia procumbens | Common | Native |
| Siberian bog sedge | Kobresia sibirica | Unknown | Native |
| Sidebells Penstemon | Penstemon secundiflorus | Unknown | Native |
| Sierran tansymustard | Descurainia californica | Uncommon | Non-native |
| silkyleaf cinquefoil | Potentilla ambigens | Uncommon | Native |
| Silver Sage | Artemisia frigida | Common | Native |
| silver sagebrush | Artemisia cana ssp. cana | Unknown | Unknown |
| silverweed cinquefoil | Argentina anserina | Common | Native |
| silvery lupine | Lupinus argenteus | Unknown | Native |
| silvery sedge | Carex canescens | Unknown | Unknown |
| Singleflower Cinquefoil | Potentilla nivea | Common | Native |
| Singleflower Cinquefoil | Potentilla uniflora | Common | Native |
| Siskiyou aster | Aster lanceolatus ssp. hesperius | Unknown | Native |
| Skeletonweed | Lygodesmia juncea | Uncommon | Native |
| Skmooth Aster | Symphyotrichum laeve var. geyeri | Common | Native |
| Skullcap | Scutellaria brittonii | Common | Native |
| Skunkbrush | Rhus trilobata | Common | Native |
| Sky Pilot | Polemonium viscosum | Common | Native |
| Sky-blue Aster | Symphyotrichum lanceolatum var. hesperium | Common | Native |
| Sleepy Catchfly | Silene antirrhina | Unknown | Native |
| sleepy grass, sleepygrass | Achnatherum robustum | Unknown | Native |
| slender hawkweed | Hieracium gracile var. gracile | Common | Native |
| Slender thelesperma | Thelesperma megapotamicum | Unknown | Native |
| slender wheatgrass | Elymus trachycaulus ssp. trachycaulus | Unknown | Native |
| slender wheatgrass, slender wild rye | Elymus trachycaulus | Common | Native |
| slenderbeak sedge, slender-beak sedge | Carex athrostachya | Common | Native |
| slimstem muhly | Muhlenbergia filiculmis | Common | Native |
| Sloughgrass | Beckmannia syzigachne | Unknown | Native |
| small bedstraw, threepetal bedstraw, three-petal bedstraw | Galium trifidum | Unknown | Native |
| small bur-reed | Sparganium natans | Uncommon | Native |
| smallflower fescue, small-flower fescue | Festuca minutiflora | Common | Native |
| smallflower gymnosteris | Gymnosteris parvula | Unknown | Native |
| small-flower valerian, western valerian, western valeriana | Valeriana occidentalis | Common | Native |
| Small-flowered Lupine | Lupinus argenteus ssp. ingratus | Common | Native |
| Small-flowered Woodrush | Luzula parviflora | Common | Native |
| smallleaf angelica, small-leaf angelica | Angelica pinnata | Unknown | Native |
| Smallseed falseflax | Camelina microcarpa | Common | Non-native |
| Smooth Brome | Bromus inermis var. inermis | Common | Non-native |
| smooth fleabane, streamside fleabane | Erigeron glabellus | Unknown | Native |
| Smooth Goldenrod | Solidago missouriensis | Common | Native |
| smooth white violet | Viola macloskeyi ssp. pallens | Unknown | Native |
| Snow Buttercup | Ranunculus adoneus | Common | Native |
| snow willow | Salix nivalis | Common | Native |
| Snowberry | Symphoricarpos occidentalis | Common | Native |
| Snowberry | Symphoricarpos rotundifolius | Common | Native |
| Snow-lover | Chionophila jamesii | Rare | Native |
| soft brome | Bromus hordeaceus ssp. hordeaceus | Unknown | Unknown |
| softleaf sedge, soft-leaf sedge, softleaved sedge | Carex disperma | Common | Native |
| southern marsh yellowcress | Rorippa teres | Unknown | Native |
| sparse goldenrod, threenerve goldenrod, three-nerve goldenrod | Solidago velutina | Common | Native |
| Spearleaf Fleabane | Erigeron lonchophyllus | Unknown | Native |
| Spherical Spikerush | Luzula subcapitata | Uncommon | Native |
| spike bentgrass | Agrostis exarata | Unknown | Native |
| spike fescue, spike-fescue | Leucopoa kingii | Common | Native |
| spike muhly | Muhlenbergia wrightii | Unknown | Native |
| spike trisetum | Trisetum spicatum | Common | Native |
| spiked gilia, spiked ipomopsis | Ipomopsis spicata | Common | Native |
| Spiny-spored quillwort | Isoetes tenella | Rare | Native |
| splitleaf groundsel | Packera dimorphophylla | Unknown | Native |
| Spotted Coral-root | Corallorrhiza maculata | Common | Native |
| Spotted Knapweed | Centaurea biebersteinii | Uncommon | Non-native |
| Spreading Daisy | Erigeron divergens | Unknown | Native |
| Spreading Dogbane | Apocynum androsaemifolium | Common | Native |
| Spreading drymaria | Drymaria effusa var. depressa | Unknown | Native |
| spreading groundsmoke | Gayophytum diffusum ssp. parviflorum | Common | Native |
| spreading woodfern | Dryopteris expansa | Uncommon | Native |
| Spring Beauty | Claytonia lanceolata | Common | Native |
| Spring Beauty | Claytonia rosea | Uncommon | Native |
| Spring Coral-root | Corallorrhiza wisteriana | Uncommon | Native |
| Squaw Currant | Ribes cereum | Common | Native |
| squirreltail | Elymus elymoides ssp. brevifolius | Common | Native |
| Star Gentian | Swertia perennis | Common | Native |
| star sedge | Carex echinata ssp. echinata | Unknown | Native |
| Star-flowered Pyrola | Moneses uniflora | Common | Native |
| stemless dwarf lupine | Lupinus caespitosus var. caespitosus | Unknown | Native |
| Stemless Evening-primrose | Oenothera cespitosa ssp. macroglottis | Common | Native |
| Stemless Lupine | Lupinus caespitosus | Common | Native |
| Steven’s sedge | Carex norvegica ssp. stevenii | Common | Native |
| sticky gilia | Gilia pinnatifida | Common | Native |
| Sticky-laurel, Mountain Balm | Ceanothus velutinus | Common | Native |
| Stiff Club-moss | Lycopodium annotinum | Uncommon | Native |
| stiff goldenrod | Oligoneuron rigidum | Common | Native |
| strapleaf willow | Salix ligulifolia | Unknown | Unknown |
| Strawberry-blite, Squaw Paint | Chenopodium capitatum | Unknown | Native |
| streambank wheatgrass, streamside wild rye | Elymus lanceolatus | Unknown | Native |
| Striped Coral-root | Corallorrhiza striata | Uncommon | Native |
| Subalpine Aster | Symphyotrichum foliaceum | Common | Native |
| Subalpine Big Sagebrush | Artemisia tridentata ssp. spiciformis | Unknown | Native |
| Subalpine Buckwheat, Sulpherflower | Eriogonum umbellatum | Common | Native |
| Subalpine Buttercup | Ranunculus eschscholtzii | Unknown | Native |
| Subalpine Clematis | Clematis columbiana var. columbiana | Unknown | Native |
| Subalpine Daisy | Erigeron peregrinus ssp. callianthemus | Common | Native |
| Subalpine Fir | Abies lasiocarpa | Common | Native |
| Subalpine Larkspur | Delphinium barbeyi | Common | Native |
| subalpine monkeyflower, subalpine monkey-flower, Tiling’s monkeyflower | Mimulus tilingii | Unknown | Native |
| Sugarbowls | Clematis hirsutissima var. hirsutissima | Common | Native |
| sulphur cinquefoil | Potentilla recta | Uncommon | Non-native |
| sulphur-flower buckwheat | Eriogonum umbellatum var. majus | Unknown | Unknown |
| sulphur-flower buckwheat | Eriogonum umbellatum var. umbellatum | Unknown | Unknown |
| sun sedge | Carex inops ssp. heliophila | Common | Native |
| Swamp Arrowgrass | Triglochin palustre | Common | Native |
| Swamp Laurel | Kalmia microphylla | Common | Native |
| Swamp Loosestrife | Lysimachia thyrsiflora | Unknown | Native |
| Sweet Cicely | Osmorhiza depauperata | Common | Native |
| Sweet Cicily | Pseudocymopterus montanus | Common | Native |
| Sweet Coltsfoot | Petasites frigidus var. sagittatus | Common | Native |
| Sweet Grass | Hierochloe hirta ssp. arctica | Common | Native |
| Sweet William | Dianthus barbatus | Occasional | Non-native |
| sweetcicely | Osmorhiza berteroi | Unknown | Unknown |
| tadpole buttercup | Ranunculus ranunculinus | Common | Native |
| tailcup lupine | Lupinus caudatus | Unknown | Native |
| tall blue lettuce, wild blue lettuce | Lactuca biennis | Uncommon | Native |
| tall cinquefoil | Potentilla arguta ssp. arguta | Common | Native |
| Tall False-dandelion | Agoseris glauca var. agrestis | Unknown | Native |
| tall fescue | Lolium arundinaceum | Unknown | Unknown |
| Tall Oneside Penstemon | Penstemon unilateralis | Common | Native |
| Tall Stickweed | Hackelia floribunda | Common | Native |
| Tansy Aster | Machaeranthera canescens | Unknown | Native |
| Tansy Mustard | Descurainia sophia | Common | Non-native |
| Tarweed | Madia glomerata | Common | Native |
| Tasselflower brickellia | Brickellia grandiflora | Common | Native |
| Thick-bracted Senecio | Senecio crassulus | Common | Native |
| Thick-leaf whitlow-grass | Draba crassa | Common | Native |
| thimbleberry | Rubus parviflorus var. parviflorus | Unknown | Unknown |
| Thimbleflower | Anemone cylindrica | Common | Native |
| thread rush | Juncus filiformis | Uncommon | Native |
| threadleaf sedge | Carex filifolia | Unknown | Unknown |
| threehulled rush, three-hulled rush | Juncus triglumis | Unknown | Native |
| threepetal bedstraw, three-petal bedstraw | Galium trifidum ssp. subbiflorum | Unknown | Native |
| Thurber fescue, Thurber’s fescue | Festuca thurberi | Common | Native |
| thymeleaf speedwell | Veronica serpyllifolia ssp. serpyllifolia | Common | Native |
| Ticklegrass | Agrostis scabra | Common | Native |
| timber oatgrass | Danthonia intermedia | Unknown | Native |
| timberline bluegrass | Poa glauca ssp. rupicola | Unknown | Native |
| Timothy | Phleum pratense | Common | Non-native |
| Toad Rush | Juncus bufonius | Common | Native |
| Tower Mustard | Arabis hirsuta | Uncommon | Native |
| tower rockcress | Arabis glabra | Unknown | Non-native |
| Tracy rush, Tracy’s rush | Juncus tracyi | Unknown | Native |
| Tracy’s bluegrass | Poa tracyi | Unknown | Unknown |
| tufted alpine saxifrage | Saxifraga caespitosa ssp. delicatula | Common | Native |
| tufted broomrape | Orobanche fasciculata | Common | Native |
| tufted hairgrass | Deschampsia cespitosa | Unknown | Native |
| Tundra buttercup | Ranunculus gelidus | Uncommon | Native |
| tundra gentian | Gentiana nutans | Unknown | Native |
| turion duckweed | Lemna turionifera | Common | Native |
| Turnip-leaved Senecio | Senecio rapifolius | Common | Native |
| Twayblade | Listera convallarioides | Rare | Native |
| Tweedy Plantian | Plantago tweedyi | Unknown | Native |
| Tweedy rush, Tweedy’s rush | Juncus tweedyi | Rare | Native |
| Twinflower | Linnaea borealis | Common | Native |
| twinleaf bedstraw, twin-leaf bedstraw | Galium bifolium | Unknown | Native |
| Twisted Pod Draba | Draba streptocarpa | Common | Native |
| Twisted-stalk | Streptopus amplexifolius var. chalazatus | Unknown | Native |
| twitch, couchgrass, creeping quackgrass, Quackgrass, quickgrass, quitch, scutch | Elymus repens | Uncommon | Non-native |
| two leaf waterweed, Waterweed | Elodea bifoliata | Common | Native |
| twoflowered rush | Juncus biglumis | Uncommon | Native |
| two-scale saltbush | Atriplex micrantha | Unknown | Native |
| twotipped sedge | Carex lachenalii | Unknown | Native |
| umbellate chickweed, umbrella starwort | Stellaria umbellata | Common | Native |
| Underwood’s spikemoss | Selaginella underwoodii | Unknown | Native |
| Utah serviceberry | Amelanchier utahensis | Unknown | Unknown |
| variable-leaf scorpion-weed, varileaf phacelia, virgate phacelia, wand phacelia | Phacelia heterophylla | Unknown | Native |
| Variegated scouringrush | Equisetum variegatum | Unknown | Native |
| Vasey rush, Vasey’s rush | Juncus vaseyi | Rare | Native |
| Venus’ Looking-glass | Triodanis perfoliata | Common | Native |
| Veronica, Speedwell | Veronica wormskjoldii | Common | Native |
| Vervain | Verbena bracteata | Unknown | Non-native |
| Water Crowfoot | Ranunculus trichophyllus | Common | Native |
| Water Hemlock | Cicuta douglasii | Common | Native |
| water miners lettuce | Montia chamissoi | Common | Native |
| water sedge | Carex aquatilis | Unknown | Native |
| water sedge | Carex aquatilis ssp. stans | Common | Native |
| Water Starwort | Callitriche palustris | Common | Native |
| Water-clover | Menyanthes trifoliata | Uncommon | Native |
| Watercress | Rorippa nasturtium-aquaticum | Common | Native |
| waterplantain buttercup | Ranunculus alismifolius var. montanus | Unknown | Native |
| Wavy-leaf stickleaf | Mentzelia sinuata | Unknown | Native |
| Waxflower | Jamesia americana | Common | Native |
| Western Aster | Symphyotrichum spathulatum var. spathulatum | Unknown | Native |
| western blue virginsbowe | Clematis occidentalis var. occidentalis | Common | Native |
| western dock | Rumex aquaticus var. fenestratus | Common | Native |
| Western Golden Ragwort | Senecio eremophilus var. kingii | Common | Native |
| western Jacob’s-ladder, western polemonium | Polemonium occidentale ssp. occidentale | Uncommon | Native |
| Western Larkspur | Delphinium X occidentale | Unknown | Native |
| western meadow aster | Symphyotrichum campestre var. campestre | Unknown | Native |
| western moonwort | Botrychium hesperium | Unknown | Native |
| Western polypody | Polypodium hesperium | Unknown | Native |
| western sedge | Carex occidentalis | Common | Native |
| western thimbleberry | Rubacer parviflorus | Unknown | Native |
| Western Wheatgrass | Pascopyrum smithii | Common | Native |
| Western Yellow Paintbrush | Castilleja occidentalis | Common | Native |
| Wheeler bluegrass | Poa nervosa | Unknown | Unknown |
| Wheeler’s bluegrass | Poa wheeleri | Common | Native |
| Whiplash Daisy | Erigeron flagellaris | Common | Native |
| Whiskbroom Parsley | Harbouria trachypleura | Unknown | Native |
| White Bog-orchid | Platanthera dilatata var. dilatata | Unknown | Native |
| White Dutch Clover | Trifolium repens | Common | Non-native |
| White Geranium | Geranium richardsonii | Common | Native |
| white hawkweed, whiteflower hawkweed | Hieracium albiflorum | Unknown | Native |
| White Mountain sedge | Carex geophila | Unknown | Native |
| white panicle aster | Symphyotrichum lanceolatum ssp. hesperium var. hesperium | Unknown | Unknown |
| white phacelia, white scorpionweed, white scorpion-weed | Phacelia alba | Common | Native |
| white prairie aster | Symphyotrichum falcatum var. falcatum | Unknown | Unknown |
| whitescale sedge, white-scale sedge | Carex xerantica | Unknown | Native |
| Whorled-leaf Loco | Oxytropis splendens | Common | Native |
| Wild Geranium | Geranium caespitosum | Common | Native |
| Wild Hollyhock | Sidalcea neomexicana | Common | Native |
| Wild Liquorice | Glycyrrhiza lepidota | Common | Native |
| Wild Mint | Mentha arvensis | Common | Native |
| Wild Rose | Rosa acicularis ssp. sayi | Common | Native |
| Wild Rose | Rosa woodsii | Common | Native |
| Wild Sarsaparilla | Aralia nudicaulis | Uncommon | Native |
| Wild Strawberry | Fragaria vesca ssp. bracteata | Common | Native |
| Wild Strawberry | Fragaria virginiana ssp. glauca | Unknown | Native |
| Wild Tarragon | Artemisia dracunculus | Common | Native |
| winged buckwheat | Eriogonum alatum var. alatum | Common | Native |
| wolf trisetum, Wolf’s trisetum | Trisetum wolfii | Common | Native |
| wolf willow, Wolf’s willow | Salix wolfii | Common | Native |
| Wood Lily | Lilium philadelphicum | Uncommon | Native |
| Woodlandstar | Lithophragma parviflorum | Uncommon | Native |
| woolbearing dandelion | Taraxacum eriophorum | Unknown | Native |
| woolly brome | Bromus lanatipes | Unknown | Native |
| woolly groundsel | Packera cana | Unknown | Native |
| woolly mullein | Verbascum thapsus | Common | Non-native |
| woolly sedge | Carex pellita | Common | Native |
| Wooton Senecio | Senecio wootonii | Common | Native |
| Yarrow | Achillea millefolium var. occidentalis | Common | Native |
| yellow Indian paintbrush, yellow paintbrush | Castilleja flava | Unknown | Native |
| Yellow Ladyslipper | Cypripedium parviflorum var. pubescens | Rare | Native |
| Yellow rocket | Barbarea vulgaris | Uncommon | Non-native |
| Yellow Spring bedstraw | Galium verum | Unknown | Native |
| Yellow Stonecrop | Sedum lanceolatum | Common | Native |
| Yellow Sweet-clover | Melilotus officinalis | Common | Non-native |
| Yellow Water Crowfoot | Ranunculus gmelinii | Common | Native |
| Yellow whitlowort | Draba nemorosa | Common | Non-native |
| Yellow-flowered Violet | Viola vallicola var. major | Common | Native |
| yellowspine thistle | Cirsium ochrocentrum | Unknown | Native |
Note: The wildlife species included in the lists above have been confirmed with the National Park Service to be present in Rocky Mountain National Park. Other species may exist in the park that are currently under review or not yet known.
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References:
- National Park Species List
- Featured Photo Credit: Twin Guides Rocky Mountain National Park, Colorado by NPS