Common Yarrow (Achillea millefolium)

Indian Ricegrass (Achnatherum hymenoides)

Sweet Flag (Acorus americanus)

Ohio Buckeye (Aesculus glabra)

Threadleaf giant hyssop (Agastache rupestris)

Parry’s Agave (Agave parryi)

Smallflower Century Plant (Agave parviflora)

Orange Mountain Dandelion (Agoseris aurantiaca)

Colic Root (Aletris farinosa)

Brandegee’s Onion (Allium brandegeei)

Sugarstick (Allotropa virgata)

Pearly Everlasting (Anaphalis margaritacea)

Big bluestem (Andropogon gerardii)

Sweetflower Rock Jasmine (Androsace chamaejasme ssp. carinata)

Canada Anemone (Anemone canadensis)

Carolina Anemone (Anemone caroliniana)

Wood Anemone (Anemone quinquefolia)

Meadow Pussytoes (Antennaria arcuata)

Rosy Pussytoes (Antennaria rosea)

Spreading Dogbane (Apocynum androsaemifolium)

Colorado Columbine (Aquilegia caerulea)

Red or Eastern Columbine (Aquilegia canadensis)

Golden Columbine (Aquilegia chrysantha)

Yellow Columbine (Aquilegia flavescens)

Western Columbine (Aquilegia formosa)

Utah Columbine (Aquilegia scopulorum)

Smooth Rockcress (Arabis laevigata)

Bristly Sarsaparilla (Aralia hispida)

Lodgepole Pine Dwarf Mistletoe (Arceuthobium americanum)

Southwestern prickly poppy (Argemone pleiacantha)

Jack-in-The-Pulpit (Arisaema triphyllum)

Heartleaf arnica (Arnica cordifolia)

Northern Wormwood (Artemisia campestris ssp. borealis)

White Sagebrush (Artemisia ludoviciana)

Sagebrush (Artemisia tridentata)

Goatsbeard (Aruncus dioicus)

Wild Ginger (Asarum canadense)

Wild Ginger (Asarum caudatum)

Swamp Milkweed (Asclepias incarnata)

Mead’s Milkweed (Asclepias meadii)

Oval-leaved Milkweed (Asclepias ovalifolia)

White Swamp Milkweed (Asclepias perennis)

Purple Milkweed (Asclepias purpurascens)

Common Milkweed (Asclepias syriaca)

Butterfly Milkweed (Asclepias tuberosa)

Wheel Milkweed (Asclepias uncialis)

Redring Milkweed (Asclepias variegata)

Green Comet Milkweed (Asclepias viridiflora)

Green Antelopehorn (Asclepias viridis)

American Hart's Tongue Fern (Asplenium scolopendrium var. americanum)

Alpine Milkvetch (Astragalus alpinus)

Scarlet Milkvetch (Astragalus coccineus)

Hyattville Milkvetch (Astragalus jejunus var. articulatus)

Schultz’s Milk-vetch (Astragalus molybdenus var. schultziorum)

Ferron's Milkvetch (Astragalus musiniensis)

Precocious Milkvetch (Astragalus proimanthes)

Lady Fern (Athyrium filix-femina)

Fourwing saltbush (Atriplex canescens)

Fern-leaved False Foxglove (Aureolaria pedicularia var. intercedens)

Pacific Mosquitofern (Azolla filiculoides)

Mule Fat (Baccharis salicifolia)

Hairy Balsamroot (Balsamorhiza hookeri var. hispidula)

Arrowleaf Balsamroot (Balsamorhiza sagittata)

White Wild Indigo (Baptisia alba)

Cream Wild Indigo (Baptisia leucophaea)

Lyreleaf Greeneyes (Berlandiera lyrata)

Crossvine (Bignonia capreolata)

Watershield (Brasenia schreberi)

Smooth Rockcress (Boechera laevigata)

Bryoandersonia Moss (Bryoandersonia illecebra)

Silvergreen Bryum Moss (Bryum argenteum)

Pirate Bush (Buckleya distichophylla)

Bug-on-a-stick moss (Buxbaumia viridis)

Red Maids (Calandrinia ciliata)

White Mariposa Lily (Calochortus eurycarpus)

Umpqua mariposa lily (Calochortus umpquaensis)

Butterfly Mariposa Lily (Calochortus venustus)

Tuberous Grass Pink (Calopogon tuberosus)

White Marsh Marigold (Caltha leptosepala)

Yellow Marsh Marigold (Caltha palustris)

Eastern Sweetshrub (Calycanthus floridus)

Common Camas (Camassia quamash)

Wild Hyacinths (Camassia scilloides)

Tansyleaf Suncup (Camissonia tanacetifolia)

Harebell (Campanula rotundifolia)

Heartleaf Bittercress (Cardamine cordifolia)

Cut-leaved Toothwort (Cardamine concatenata)

Clustered Sedge (Carex cumulata)

Plantain-leaf sedge (Carex plantaginea)

Native Sedge (Carex vernacula)

Saguaro (Carnegiea gigantea)

Christ’s Indian Paintbrush (Castilleja christii)

Indian Paintbrush (Castilleja coccinea)

Pale painted cup (Castilleja septentrionalis)

Northern Catalpa (Catalpa speciosa)

Field Chickweed (Cerastium arvense)

Mountain Mahogany (Cercocarpus ledifolius)

Spotted Sandmat (Chamaesyce maculata)

Fireweed (Chamerion angustifolium)

Turtlehead (Chelone glabra)

Desert willow (Chilopsis linearis)

Soap Plant (Chlorogalum pomeridianum)

Water Hemlock (Cicuta maculata)

Field Thistle (Cirsium discolor)

Pitcher’s Thistle (Cirsium pitcheri)

Wavyleaf Thistle (Cirsium undulatum (Nutt.) Spreng.)

Sacramento Mountain Thistle (Cirsium vinaceum)

Tweedy's lewisia (Cistanthe tweedyi)

Small Spreading Pogonia (Cleistes bifaria)

Purple clematis (Clematis occidentalis var. occidentalis)

Rocky Mountain Bee Plant (Cleome serrulata)

Yerba Buena (Clinopodium douglasii)

Bluebead lily (Clintonia borealis)

Butterfly Pea (Clitoria mariana)

Tiger's Eye (Coltricia Perennis)

Birdbill Dayflower (Commelina dianthifolia)

American Cancer-root (Conopholis americana)

Merten's Coralroot (Corallorhiza mertensiana)

Autumn Coral-Root (Corallorhiza odontorhiza)

Striped Coralroot (Corallorhiza striata)

Early Coralroot (Corallorhiza trifida)

Wister's Coralroot (Corallorhiza wisteriana)

Lanceleaf Coreopsis (Coreopsis lanceolata)

Golden Tickseed (Coreopsis tinctoria Nutt.)

Dwarf Dogwood (Cornus canadensis L.)

Pacific Dogwood (Cornus nuttallii)

Red Osier Dogwood (Cornus sericea)

Plateau Yellow Miner’s Candle (Cryptantha flava)

Five-angled Dodder (Cuscuta pentagona)

Turpentine spring-parsley (Cymopterus terebinthinus)

Pink lady's slipper (Cypripedium acaule)

White Lady Slipper Orchid (Cypripedium candidum)

Clustered Lady’s Slipper (Cypripedium fasciculatum)

Mountain Lady's Slipper (Cypripedium montanum)

Showy Lady’s Slipper (Cypripedium reginae)

California Pitcherplant (Darlingtonia californica)

Sacred thorn-apple (Datura wrightii)

Nuttall’s larkspur (Delphinium nuttallianum)

Dutchman's Breeches (Dicentra cucullaria)

Pacific Bleeding-Heart (Dicentra formosa)

Steer's Head (Dicentra uniflora)

Alpine Shooting Star (Dodecatheon alpinum)

Frigid Shooting Star (Dodecatheon austrofrigidum)

Appalachian Threadwort (Drepanolejeunea appalachiana)

English sundew (Drosera anglica)

Spoon-leaved Sundew (Drosera intermedia)

Mountain Avens (Dryas octopetala)

Live-forever (Dudleya cymosa ssp. cymosa)

Scarlet Hedgehog Cactus (Echinocereus coccineus)

Kingcup Cactus (Echinocereus triglochidiatus)

Common Spikerush (Eleocharis palustris)

Common Horsetail (Equisetum arvense)

Winward’s Goldenweed (Ericameria discoidea var. winwardii)

Rubber Rabbitbrush (Ericameria nauseosa)

Woolly fleabane (Erigeron lanatus)

Featherleaf Fleabane (Erigeron pinnatisectus)

Yerba Santa (Eriodictyon sp.)

Crisp-leaf wild buckwheat (Eriogonum corymbosum)

Desert Trumpet (Eriogonum inflatum)

Parsnipflower Buckwheat (Eriogonum heracleoides var. heracleoides)

Lobb's Buckwheat (Eriogonum lobbii)

Tufted Wild Buckwheat (Eriogonum ovalifolium)

Rattlesnake Master (Eryngium yuccifolium)

Western Wallflower (Erysimum capitatum)

Elegant Fawnlily (Erythronium elegans)

Yellow Avalanche-lily (Erythronium grandiflorum)

California Poppy (Eschscholzia californica)

Spinystar (Escobaria vivipara)

Flowering Spurge (Euphorbia corollata)

Apache Plume (Fallugia paradoxa)

Cliff Fendlerbush (Fendlera rupicola)

Ocotillo (Fouquieria splendens)

Barrel Cactus (Ferocactus sp.)

Woodland Strawberry (Fragaria vesca)

California Flannelbush (Fremontodendron californicum)

Chocolate lily (Fritillaria camschatcensis)

Yellow Fritillary (Fritillaria pudica)

Blanketflower (Gaillardia aristata)

Showy Orchid (Galearis spectabilis)

Creeping Snowberry (Gaultheria hispidula)

Closed Bottle Gentian (Gentiana andrewsii)

Mountain Bog Gentian (Gentiana calycosa)

Mendocino gentian (Gentiana setigera)

Meadow Fringed Gentian (Gentianopsis thermalis)

Wild Geranium (Geranium maculatum)

White Crane's Bill (Geranium richardsonii)

Large-leaf Avens (Geum macrophyllum).

Mountain avens (Geum peckii)

Old Man’s Whiskers (Geum triflorum)

Bird’s-eyes Gilia (Gilia tricolor)

Rattlesnake Plantain (Goodyera oblongifolia)

Downy Rattlesnake Plantain (Goodyera pubescens)

Golden Hedgehyssop (Gratiola aurea)

Curlycup Gumweed (Grindelia squarrosa)

Cedar Apple Rust (Gymnosporangium juniperi-virginianae)

Big-leaf witch-hazel (Hamamelis ovalis)

American Witchhazel (Hamamelis virginiana L.)

Common sneezeweed (Helenium autumnale var. autumnale)

Carolina Rockrose (Helianthemum carolinianum)

Common Sunflower (Helianthus annuus)

Hairy Sunflower (Helianthus hirsutus)

Ashy Sunflower (Helianthus mollis)

Showy Goldeneye (Heliomeris multiflora)

Hepatica (Hepatica nobilis)

Crested Coralroot Orchid (Hexalectris spicata)

Hairy-Fruited Hibiscus (Hibiscus lasiocarpos)

American Featherfoil (Hottonia inflata)

Wild Hydrangea (Hydrangea arborescens)

Goldenseal (Hydrastis canadensis)

Ballhead Waterleaf (Hydrophyllum capitatum)

Streambank Wild Hollyhock (Iliamna rivularis)

Jewelweed (Impatiens capensis)

Scarlet Gilia (Ipomopsis aggregata)

Spiked Ipomopsis (Ipomopsis spicata)

Dwarf Lake Iris (Iris lacustris)

Western Blue Flag Iris (Iris missouriensis)

Dwarf Iris (Iris verna)

Gordon’s Ivesia (Ivesia gordonii)

Cliff Jamesia (Jamesia americana)

Twinleaf (Jeffersonia diphylla)

Baltic Rush (Juncus arcticus)

American Water Willow (Justicia americana).

Bog Laurel (Kalmia microphylla)

Cooley's False Buttercup (Kumlienia cooleyae)

Bog Labrador Tea (Ledum groenlandicum)

Common duckweed (Lemna minor)

Star Lily (Leucocrinum montanum)

Pygmy Bitterroot (Lewisia pygmaea)

Bitterroot (Lewisia rediviva)

Sacajawea's bitterroot (Lewisia sacajaweana)

Rough Blazing Star (Liatris aspera)

Ouachita Blazing Star
(Liatris compacta)

Savanna blazing star (Liatris scariosa var. nieuwlandii)

Columbian Lily (Lilium columbianum)

Western Lily (Lilium occidentale)

Washington lily (Lilium washingtonianum)

Bog Spicebush (Lindera subcoriacea)

Twinflower (Linnaea borealis)

Lily-leaved Twayblade (Liparis liliifolia)

Hoary Puccoon (Lithospermum canescens)

Lungwort (Lobaria pulmonaria)

Cardinal Flower (Lobelia cardinalis)

Dortmann's Cardinalflower (Lobelia dortmanna)

Great Blue Lobelia (Lobelia siphilitica)

Nineleaf Biscuitroot (Lomatium triternatum)

Twinberry Honeysuckle (Lonicera involucrata)

Partridge-foot (Luetkea pectinata)

Sundial or Wild Lupine (Lupinus perennis)

Sabin's Lupine (Lupinus sabinianus)

Western Skunk Cabbage (Lysichiton americanus)

Marchantia (Marchantia polymorpha)

Baldwyn's Milkvine (Matelea baldwyniana)

Stream bogmoss (Mayaca fluviatilis)

Plains Blackfoot (Melampodium leucanthum)

Smoothstem blazingstar (Mentzelia laevicaulis)

Short-styled Bluebell (Mertensia brevistyla)

Lewis’s Monkeyflower (Mimulus lewisii)

Twinflower Sandwort (Minuartia obtusiloba)

Macfarlane's four-o-clock (Mirabilis macfarlanei)

Colorado Four O'clock (Mirabilis multiflora)

Partridge Berry (Mitchella repens)

Scarlet Beebalm (Monarda didyma)

Wood Nymph (Moneses uniflora)

Ghost Pipe (Monotropa uniflora)

Alpine Forget-Me-Not (Myosotis asiatica)

Watercress (Nasturtium officinale)

Arctic Kidney Lichen (Nephroma arcticum)

Pimpled kidney lichen (Nephroma resupinatum)

Indian Olive (Nestronia umbellula)

Shasta snow-wreath (Neviusia cliftonii)

White Water Lily (Nymphaea odorata)

Tufted evening-primrose (Oenothera caespitosa)

Showy Evening Primrose (Oenothera speciosa)

Devil's Club (Oplopanax horridus)

Prickly Pear (Opuntia basilaris)

Eastern Prickly Pear (Opuntia humifusa)

Great Plains Prickly Pear (Opuntia polyacantha)

One-flowered Cancer Root (Orobanche uniflora)

Redwood Sorrel (Oxalis oregana)

Common Yellow Wood Sorrel (Oxalis stricta)

Dwarf Ginseng (Panax trifolius)

Pale Poppy (Papaver alboroseum)

Northern Grass of Parnassus (Parnassia Palustris)

Silverling (Paronychia argyrocoma)

Mountain-lover (Paxistima myrsinites)

Lemonscent (Pectis angustifolia)

Wood Betony (Pedicularis canadensis)

Leafy lousewort (Pedicularis racemosa)

Simpson's Hedgehog Cactus (Pediocactus simpsonii)

Large Beardtongue (Penstemon grandiflorus)

Leonard's Penstemon (Penstemon leonardii var. leonardii).

Payette Beardtongue (Penstemon payettensis)

Bridges’ Penstemon (Penstemon rostriflorus)

Rydberg’s penstemon (Penstemon rydbergii)

Littlecup Penstemon (Penstemon sepalulus)

Sweet coltsfoot (Petasites sagittatus)

Rock Spiraea (Petrophytum caespitosum)

Silky Phacelia (Phacelia sericea)

Quill Fameflower (Phemeranthus teretifolius)

Annual Phlox (Phlox drummondii)

Opal phlox (Phlox opalensis)

American Pokeweed (Phytolacca americana)

Yellow Fringed Orchid (Platanthera ciliaris)

White Bog Orchid (Platanthera dilatata)

Yellow Fringeless Orchid (Platanthera integra)

White Fringeless Orchid (Platanthera integrilabia)

Eastern Prairie Fringed Orchid (Platanthera leucophaea)

Blunt-leaf Orchid (Platanthera obtusata)

Round-leaved Rein Orchid (Platanthera orbiculata)

Lesser Purple Fringed Orchid (Platanthera psycodes)

James' galleta (Pleuraphis jamesii)

Rose Pogonia (Pogonia ophioglossoides)

Redwhisker clammyweed (Polanisia dodecandra)

Rocky Mountain Jacob's-ladder (Polemonium confertum)

Western Polemonium (Polemonium occidentale)

Jacob’s Ladder (Polemonium reptans)

Appalachian Jacob's ladder (Polemonium vanbruntiae)

Sticky Polemonium (Polemonium viscosum)

Whiteflower Leafcup (Polymnia canadensis)

Gaywings (Polygala paucifolia Willd.)

Seneca Snakeroot (Polygala senega)

Water Smartweed (Polygonum amphibium)

Pennsylvania Smartweed (Polygonum pensylvanicum)

Black Cottonwood (Populus balsamifera ssp. trichocarpa)

Alpine Rattlesnake Root (Prenanthes boottii)

Parry's Primrose (Primula parryi)

Islay (Prunus ilicifolia)

Woodland Pinedrops (Pterospora andromedea)

Pasqueflower (Pulsatilla patens var. multifida)

Bitterbrush (Purshia tridentata)

Blue Oak (Quercus douglasii)

White Water Crowfoot (Ranunculus aquatilis)

Jupiter / Utah Buttercup (Ranunculus jovis)

Smooth azalea (Rhododendron arborescens)

Rhodora (Rhododendron canadense)

Cumberland Azalea (Rhododendron cumberlandense )

Lapland Rosebay (Rhododendron lapponicum)

Western Azalea (Rhododendron occidentale)

Staghorn Sumac (Rhus typhina)

Golden Currant (Ribes aureum)

Red-flowering Currant (Ribes sanguineum)

Black Locust (Robinia pseudoacacia)

New Mexico locust (Robinia neomexicana)

Carolina Rose (Rosa carolina)

Swamp Rose (Rosa palustris)

Prairie Rose (Rosa setigera)

Delicious Raspberry (Rubus deliciosus)

Flowering Raspberry (Rubus odoratus L.)

Thimbleberry (Rubus parviflorus)

Salmonberry (Rubus spectabilis)

Fringeleaf Wild Petunia (Ruellia humilis Nutt.)

Arrowhead (Sagittaria cuneata)

Giant Arrowhead (Sagittaria montevidensis)

Blue Sage (Salvia azurea var. grandiflora)

American Black Elderberry (Sambucus nigra L. ssp. Canadensis (L.) R. Bolli)

American Burnet (Sanguisorba canadensis)

Snow Plant (Sarcodes sanguinea)

Yellow Pitcherplant (Sarracenia flava)

Purple Pitcherplant (Sarracenia purpurea)

White mountain-saxifrage (Saxifraga paniculata)

Mimbres figwort (Scrophularia macrantha)

Cockerell’s Stonecrop (Sedum cockerellii)

Widow’s Cross (Sedum pulchellum)

Creeping Sibbaldia (Sibbaldia procumbens)

Moss Campion (Silene acaulis)

Wherry's Catchfly (Silene caroliniana var. wherryi)

Royal Catchfly (Silene regia)

Scarlet Catchfly (Silene subciliata)

Fire Pink (Silene virginica)

Cut-leaf Prairie-Dock (Silphium pinnatifidum)

Prairie Dock (Silphium terebinthinaceum)

Blue-eyed Grass (Sisyrinchium albidum)

Hairy Leafcup (Smallanthus uvedalius)

Alpine False Candytuft (Smelowskia calycina var. americana)

Tall Goldenrod (Solidago altissima)

Ouachita Goldenrod (Solidago ouachitensis)

Indian Pink (Spigelia marilandica)

Ute Lady's Tresses (Spiranthes diluvialis)

hooded ladies'-tresses (Spiranthes Romanzoffiana)

Stemless Goldenweed (Stenotus Acaulis)

Silky Camellia (Stewartia malacodendron)

Twisted Stalk (Streptopus amplexifolius)

Pencil Flower (Stylosanthes Biflora)

New England Aster (Symphyotrichum novae-angliae)

Eastern Skunk Cabbage (Symplocarpus foetidus)

Mountain Kittentails (Synthyris missurica)

Horned Dandelion (Taraxacum ceratophorum)

Goat's Rue (Tephrosia virginiana)

Bitterweed (Tetraneuris acaulis var. acaulis)

Old-Man-of-the-Mountain (Tetraneuris grandiflora)

Fewflower meadow-rue (Thalictrum sparsiflorum)

Crane-fly Orchid (Tipularia discolor)

Wyoming Townsend Daisy (Townsendia alpigena)

Western Poison-ivy (Toxicodendron rydbergii)

Appalachian Bristle Fern (Trichomanes boschianum)

Starflower (Trientalis borealis)

Dwarf Clover (Trifolium nanum)

Catesby’s Trillium (Trillium catesbaei)

Northern Nodding Trillium (Trillium cernuum)

Little Sweet Betsy (Trillium cuneatum)

Decumbent Trillium (Trillium decumbens)

Mottled Wakerobin (Trillium discolor)

Red Trillium (Trillium erectum)

Nodding Wakerobin (Trillium flexipes)

Graceful Trillium (Trillium gracile)

Great White Trillium (Trillium grandiflorum)

Lance-leaved Trillium (Trillium lancifolium)

Louisiana Trillium (Trillium ludovicianum)

Yellow Trillium (Trillium luteum)

Snow Trillium (Trillium nivale)

Salmon Mountain wake robin (Trillium ovatum var. oettingeri)

Western White Trillium (Trillium ovatum var. ovatum)

Persistent Trillium (Trillium persistens)

Dwarf Trillium (Trillium pusillum var. pusillum)

Virginia Dwarf Trillium (Trillium pusillum var. virginianum)

Relict Trillium (Trillium reliquum)

Southern Nodding Trillium (Trillium rugelii)

Toadshade (Trillium sessile)

Sweet white trillium (Trillium simile)

Rainbow Wakerobin (Trillium sulcatum)

Texas Wakerobin (Trillium texanum)

Painted Trillium (Trillium undulatum)

Vasey's Trillium (Trillium vaseyi)

Green Trillium (Trillium viride)

Orange-Fruited Horse Gentian (Triosteum aurantiacum)

Three Birds Orchid (Triphora trianthophora)

Ithuriel's Spear (Triteleia laxa)

American globeflower (Trollius laxus)

Frosted rock tripe (Umbilicaria americana)

Common bladderwort (Utricularia macrorhiza)

Bearded Lichen (Usnea longissima)

Dwarf Bilberry (Vaccinium cespitosum)

Carolina Crownbeard (Verbesina walteri)

Marsh Blue Violet (Viola cucullata)

Nuttall's Violet (Viola nuttallii)

Giant Ironweed (Vernonia gigantea)

American Brooklime (Veronica americana)

Culver's Root (Veronicastrum virginicum)

Birdfoot Violet (Viola pedata)

Arizona Grape (Vitis arizonica)

White Mule's Ears (Wyethia helianthoides)

Plants of the Winter Solstice

Colorado tansyaster (Xanthisma coloradoense)

Bear-grass (Xerophyllum tenax)

Smooth Woody Aster (Xylorhiza glabriuscula)

Drummond’s yellow-eyed grass (Xyris drummondii)

Banana Yucca (Yucca baccata)

Soapweed Yucca (Yucca glauca)

Mountain Deathcamas (Zigadenus elegans)

Annual Wildrice (Zizania aquatica L.)

Wild Zinnia (Zinnia grandiflora)