Skip to main content

U.S. Forest Service

Plant of the Week

Enjoy Your Wildflowers

Thousands of wildflowers grow on our national forests and grasslands, in many shapes, sizes, and colors. A field of wildflowers or colorful plants upon a lush forest floor is a beautiful sight, but so is a single flower or scattered plants growing upon what at first glance may appear to be a dry and desolate landscape.

Celebrating Wildflowers periodically features a different wildflower plant found on our national forests and grasslands.

The Plant of the Week descriptions are organized alphabetically by genus and species.

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  All

All Plant of the Week Profiles

Gallery: A

Common Yarrow (Achillea millefolium). Common Yarrow (Achillea millefolium)

Indian Ricegrass, Achnatherum hymenoides. Indian Ricegrass (Achnatherum hymenoides)

Sweet Flag (Acorus americanus) Sweet Flag (Acorus americanus)

Ohio Buckeye (Aesculus glabra). Ohio Buckeye (Aesculus glabra)

hreadleaf giant hyssop, Agastache rupestris Threadleaf giant hyssop (Agastache rupestris)

Parry’s Agave (Agave parryi) Parry’s Agave (Agave parryi)

Smallflower Century Plant (Agave parviflora). Smallflower Century Plant (Agave parviflora)

Orange Mountain Dandelion (Agoseris aurantiaca). Orange Mountain Dandelion (Agoseris aurantiaca)

Colic Root (Aletris farinosa) Colic Root (Aletris farinosa)

Brandegee’s Onion (Allium brandegeei) Brandegee’s Onion (Allium brandegeei)

Sugarstick. Sugarstick (Allotropa virgata)

Pearly Everlasting (Anaphalis margaritacea). Pearly Everlasting (Anaphalis margaritacea)

Big bluestem (Andropogon gerardii). Big bluestem (Andropogon gerardii)

Sweetflower Rock Jasmine (Androsace chamaejasme ssp. carinata Sweetflower Rock Jasmine (Androsace chamaejasme ssp. carinata)

Canada Anemone (Anemone canadensis). Canada Anemone (Anemone canadensis)

Carolina Anemone (Anemone caroliniana). Carolina Anemone (Anemone caroliniana)

Meadow pussytoes (Antennaria arcuata). Meadow Pussytoes (Antennaria arcuata)

Rosy Pussytoes (Antennaria rosea). Rosy Pussytoes (Antennaria rosea)

Spreading Dogbane (Apocynum androsaemifolium). Spreading Dogbane (Apocynum androsaemifolium)

Colorado Columbine, Aquilegia caerulea. Colorado Columbine (Aquilegia caerulea)

Red or Eastern Columbine, Aquilegia canadensis. Red or Eastern Columbine (Aquilegia canadensis)

Golden Columbine (Aquilegia chrysantha) Golden Columbine (Aquilegia chrysantha)

Yellow Columbine (Aquilegia flavescens) Yellow Columbine (Aquilegia flavescens)

Western Columbine (Aquilegia formosa) wildflower in central Oregon forest. © Rex Wholster - Western Columbine (Aquilegia formosa)

Utah Columbine, Aquilegia scopulorum. Utah Columbine (Aquilegia scopulorum)

Smooth Rockcress (Arabis laevigata). Smooth Rockcress (Arabis laevigata)

Bristly Sarsaparilla (Aralia hispida). Bristly Sarsaparilla (Aralia hispida)

Lodgepole Pine Dwarf Mistletoe (Arceuthobium americanum). Lodgepole Pine Dwarf Mistletoe (Arceuthobium americanum)

Southwestern prickly poppy, Argemone pleiacantha. Southwestern prickly poppy (Argemone pleiacantha)

Jack-in-the Pulpit, Arisaema triphyllum. Jack-in-The-Pulpit (Arisaema triphyllum)

Jack-in-the Pulpit, Arisaema triphyllum. Heartleaf arnica (Arnica cordifolia)

Northern Wormwood Northern Wormwood (Artemisia campestris ssp. borealis)

White Sagebrush (Artemisia ludoviciana). White Sagebrush (Artemisia ludoviciana)

Sagebrush, Artemisia tridentata Sagebrush (Artemisia tridentata)

Goatsbeard (Aruncus dioicus). Goatsbeard (Aruncus dioicus)

Wild Ginger, Asarum canadense. Wild Ginger (Asarum canadense)

Wild Ginger, Asarum caudatum. Wild Ginger (Asarum caudatum)

Swamp Milkweed, Asclepias incarnata. Swamp Milkweed (Asclepias incarnata)

Mead’s Milkweed (Asclepias meadii) close up. Mead’s Milkweed (Asclepias meadii)

Oval-leaved Milkweed (Asclepias ovalifolia). Oval-leaved Milkweed (Asclepias ovalifolia)

White Swamp Milkweed (Asclepias perennis). White Swamp Milkweed (Asclepias perennis)

Purple Milkweed (Asclepias purpurascens). Purple Milkweed (Asclepias purpurascens)

Common Milkweed (Asclepias syriaca). Common Milkweed (Asclepias syriaca)

Butterfly Milkweed (Asclepias tuberosa) Butterfly Milkweed (Asclepias tuberosa)

wheel milkweed, Asclepias uncialis. Wheel Milkweed (Asclepias uncialis)

Redring Milkweed (Asclepias variegata). Redring Milkweed (Asclepias variegata)

Green Comet Milkweed (Asclepias viridiflora). Green Comet Milkweed (Asclepias viridiflora)

Green Antelopehorn (Asclepias viridis). Green Antelopehorn (Asclepias viridis)

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

Alpine Milkvetch (Astragalus alpinus). Alpine Milkvetch (Astragalus alpinus)

Scarlet Milkvetch Scarlet Milkvetch (Astragalus coccineus)

Hyattville Milkvetch (Astragalus jejunus var. articulatus) in flower and fruit from the northwest slope of Cedar Mountain, Big Horn County, Wyoming, by Charmaine Delmatier, 22 June 1993. Hyattville Milkvetch (Astragalus jejunus var. articulatus)

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

Ferron's Milkvetch (Astragalus musiniensis) Ferron's Milkvetch (Astragalus musiniensis)

Precocious Milkvetch (Astragalus proimanthes) Precocious Milkvetch (Astragalus proimanthes)

Lady Fern, Athyrium filix-femina. Lady Fern (Athyrium filix-femina)

Fourwing saltbush (Atriplex canescens). Fourwing saltbush (Atriplex canescens)

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

Pacific Mosquitofern (Azolla filiculoides). Pacific Mosquitofern (Azolla filiculoides)

Gallery: B

Mule Fat (Baccharis salicifolia). Mule Fat (Baccharis salicifolia)

arrowleaf balsamroot Arrowleaf Balsamroot (Balsamorhiza sagittata)

White Wild Indigo (Baptisia alba) White Wild Indigo (Baptisia alba)

Cream Wild Indigo (Baptisia leucophaea). Cream Wild Indigo (Baptisia leucophaea)

Lyreleaf Greeneyes (Berlandiera lyrata). Lyreleaf Greeneyes (Berlandiera lyrata)

Crossvine (Bignonia capreolata) Crossvine (Bignonia capreolata)

Watershield (Brasenia schreberi). Watershield (Brasenia schreberi)

Smooth Rockcress (Boechera laevigata) Smooth Rockcress (Boechera laevigata)

Bryoandersonia Moss, Bryoandersonia illecebra. Bryoandersonia Moss (Bryoandersonia illecebra)

Silvergreen Bryum Moss (Bryum argenteum). Silvergreen Bryum Moss (Bryum argenteum)

Pirate Bush (Buckleya distichophylla) Pirate Bush (Buckleya distichophylla)

Bug-on-a-stick moss, Buxbaumia viridis</em>). Bug-on-a-stick moss (Buxbaumia viridis)

Gallery: C

Red Maids Red Maids (Calandrinia ciliata)

White Mariposa Lily, Calochortus eurycarpus. White Mariposa Lily (Calochortus eurycarpus)

Umpqua mariposa lily, Calochortus umpquaensis Umpqua mariposa lily (Calochortus umpquaensis)

Butterfly Mariposa Lily Butterfly Mariposa Lily (Calochortus venustus)

Tuberous Grass Pink (Calopogon tuberosus). Tuberous Grass Pink (Calopogon tuberosus)

White Marsh Marigold White Marsh Marigold (Caltha leptosepala)

Yellow Marsh Marigold (Caltha palustris). Yellow Marsh Marigold (Caltha palustris)

Eastern Sweetshrub, Calycanthus floridus. Eastern Sweetshrub (Calycanthus floridus)

Common Camas. Common Camas (Camassia quamash)

Wild hyacinth, Camassia scilloides. Wild Hyacinths (Camassia scilloides)

Tansyleaf Suncup Tansyleaf Suncup (Camissonia tanacetifolia)

harebell. Harebell (Campanula rotundifolia)

Heartleaf Bittercress (Cardamine cordifolia). Heartleaf Bittercress (Cardamine cordifolia)

Cut-leaved Toothwort (Cardamine concatenata). Cut-leaved Toothwort (Cardamine concatenata)

Clustered Sedge (Carex cumulata). Clustered Sedge (Carex cumulata)

plantain-leaf sedge. Plantain-leaf sedge (Carex plantaginea)

Native Sedge (Carex vernacula). Native Sedge (Carex vernacula)

Saguaro (Carnegiea gigantea). Saguaro (Carnegiea gigantea)

Christs Indian Paintbrush, Castilleja christii. Christ’s Indian Paintbrush (Castilleja christii)

Indian Paintbrush (Castilleja coccinea) Indian Paintbrush (Castilleja coccinea)

Pale painted cup (Castilleja septentrionalis) Pale painted cup (Castilleja septentrionalis)

Northern Catalpa (Catalpa speciosa). Northern Catalpa (Catalpa speciosa)

Field Chickweed (Cerastium arvense). Field Chickweed (Cerastium arvense)

Mountain Mahogany Mountain Mahogany (Cercocarpus ledifolius)

Spotted Sandmat (Chamaesyce maculata) Spotted Sandmat (Chamaesyce maculata)

Fireweed (Chamerion angustifolium). Fireweed (Chamerion angustifolium)

turtlehead, Chelone glabra. Turtlehead (Chelone glabra)

Desert willow flowers. Desert willow (Chilopsis linearis)

Soap Plant (Chlorogalum pomeridianum) Soap Plant (Chlorogalum pomeridianum)

Water Hemlock (Cicuta maculata). Water Hemlock (Cicuta maculata)

Field Thistle (Cirsium discolor) Field Thistle (Cirsium discolor)

Pitcher's Thistle (Cirsium pitcheri). Pitcher’s Thistle (Cirsium pitcheri)

A closer look at the attractive flowering head of the wavyleaf thistle (Cirsium undulatum (Nutt.) Spreng.). Wavyleaf Thistle (Cirsium undulatum (Nutt.) Spreng.)

Sacramento Mountain Thistle (Cirsium vinaceum). Sacramento Mountain Thistle (Cirsium vinaceum)

Tweedy's lewisia, Cistanthe tweedyi. Tweedy's lewisia (Cistanthe tweedyi)

Small Spreading Pogonia (Cleistes bifaria) Small Spreading Pogonia (Cleistes bifaria)

Purple clematis (Clematis occidentalis var. occidentalis) Purple clematis (Clematis occidentalis var. occidentalis)

Rocky Mountain Bee Plant (Cleome serrulata) Rocky Mountain Bee Plant (Cleome serrulata)

Yerba Buena (Clinopodium douglasii) Yerba Buena (Clinopodium douglasii)

bluebead lily, Clintonia borealis. Bluebead lily (Clintonia borealis)

Butterfly Pea (Clitoria mariana). Butterfly Pea (Clitoria mariana)

Tiger's Eye (Coltricia Perennis). Tiger's Eye (Coltricia Perennis)

Birdbill Dayflower (Commelina dianthifolia). Birdbill Dayflower (Commelina dianthifolia)

American Cancer-root (Conopholis americana). American Cancer-root (Conopholis americana)

Merten's Coralroot (Corallorhiza mertensiana). Merten's Coralroot (Corallorhiza mertensiana)

Autumn Coralroot (Corallorhiza odontorhiza) Autumn Coral-Root (Corallorhiza odontorhiza)

Striped Coralroot (Corallorhiza striata). Striped Coralroot (Corallorhiza striata)

Early Coralroot (Corallorhiza trifida). Early Coralroot (Corallorhiza trifida)

Wister's Coralroot (Corallorhiza wisteriana). Wister's Coralroot (Corallorhiza wisteriana)

Lanceleaf Coreopsis (Coreopsis lanceolata). Lanceleaf Coreopsis (Coreopsis lanceolata)

Golden Tickseed, Coreopsis tinctoria. Golden Tickseed (Coreopsis tinctoria Nutt.)

Dwarf dogwood, Cornus canadensis. Dwarf Dogwood (Cornus canadensis)

Pacific Dogwood (Cornus nuttallii). Pacific Dogwood (Cornus nuttallii)

Red Osier Dogwood (Cornus sericea). Red Osier Dogwood (Cornus sericea)

Plateau Yellow Miner’s Candle (Cryptantha flava). Plateau Yellow Miner’s Candle (Cryptantha flava)

Orange-Fruited Horse Gentian Five-angled Dodder (Cuscuta pentagona) Five-angled Dodder (Cuscuta pentagona)

Turpentine spring-parsley (Cymopterus terebinthinus). Turpentine spring-parsley (Cymopterus terebinthinus)

pink lady's slipper, Cypripedium acaule. Pink lady's slipper (Cypripedium acaule)

Clustered Lady’s Slipper (Cypripedium fasciculatum) Clustered Lady’s Slipper (Cypripedium fasciculatum)

Mountain Lady's Slipper Mountain Lady's Slipper (Cypripedium montanum)

Showy Lady’s Slipper (Cypripedium reginae). Showy Lady’s Slipper (Cypripedium reginae)

Gallery: D

California Pitcherplant (Darlingtonia californica). California Pitcherplant (Darlingtonia californica)

Sacred thorn-apple Sacred thorn-apple (Datura wrightii)

Nuttall’s larkspur (Delphinium nuttallianum) Nuttall’s larkspur (Delphinium nuttallianum)

Dutchman's Breeches, Dicentra cucullaria. Dutchman's Breeches (Dicentra cucullaria)

An image of the Dicentra formosa. Pacific Bleeding-Heart (Dicentra formosa)

Steer's Head (Dicentra uniflora). Steer's Head (Dicentra uniflora)

Alpine Shooting Star (Dodecatheon alpinum). Alpine Shooting Star (Dodecatheon alpinum)

Frigid Shooting Star, Dodecatheon austrofrigidum. Frigid Shooting Star (Dodecatheon austrofrigidum)

Appalachian Threadwort (Drepanolejeunea appalachiana) Appalachian Threadwort (Drepanolejeunea appalachiana)

English sundew (Drosera anglica) English sundew (Drosera anglica)

spoon-leaved sundew, Drosera intermedia. Spoon-leaved Sundew (Drosera intermedia)

Mountain Avens (Dryas octopetala). Mountain Avens (Dryas octopetala)

Live-forever (Dudleya cymosa ssp. cymosa). Live-forever (Dudleya cymosa ssp. cymosa)

Gallery: E

Scarlet Hedgehog Cactus (Echinocereus coccineus). Scarlet Hedgehog Cactus (Echinocereus coccineus)

Kingcup Cactus (Echinocereus triglochidiatus). Kingcup Cactus (Echinocereus triglochidiatus)

Common Spikerush (Eleocharis palustris). Common Spikerush (Eleocharis palustris)

Common Horsetail (Equisetum arvense). Common Horsetail (Equisetum arvense)

Winward’s goldenweed (Ericameria discoidea var. winwardii) in flower, ridge south of South Fork Twin Creek, Lincoln County, Wyoming, 23 August 2011. Photo by Walter Fertig. Winward’s Goldenweed (Ericameria discoidea var. winwardii)

Rubber Rabbitbrush (Ericameria nauseosa) Rubber Rabbitbrush (Ericameria nauseosa)

Woolly fleabane (Erigeron lanatus) Woolly fleabane (Erigeron lanatus)

Featherleaf Fleabane Featherleaf Fleabane (Erigeron pinnatisectus)

Yerba Santa (Eriodictyon sp.) Yerba Santa (Eriodictyon sp.)

Crisp-leaf wild buckwheat (Eriogonum corymbosum). Crisp-leaf wild buckwheat (Eriogonum corymbosum)

Desert Trumpet (Eriogonum inflatum). Desert Trumpet (Eriogonum inflatum)

Parsnipflower Buckwheat (Eriogonum heracleoides var. heracleoides). Parsnipflower Buckwheat (Eriogonum heracleoides var. heracleoides)

Lobb's Buckwheat (Eriogonum lobbii). Lobb's Buckwheat (Eriogonum lobbii)

Tufted Wild Buckwheat (Eriogonum ovalifolium) Tufted Wild Buckwheat (Eriogonum ovalifolium)

Rattlesnake Master (Eryngium yuccifolium) Rattlesnake Master (Eryngium yuccifolium)

Western Wallflower (Erysimum capitatum). Western Wallflower (Erysimum capitatum)

Elegant Fawnlily. Elegant Fawnlily (Erythronium elegans)

Yellow Avalanche-lily (Erythronium grandiflorum) Yellow Avalanche-lily (Erythronium grandiflorum)

California Poppy, Eschscholzia californica. California Poppy (Eschscholzia californica)

Spinystar, Escobaria vivipara var. rosea. Spinystar (Escobaria vivipara)

Flowering Spurge Flowering Spurge (Euphorbia corollata)

Gallery: F

Apache Plume, Fallugia paradoxa. Apache Plume (Fallugia paradoxa)

Cliff Fendlerbush (Fendlera rupicola) Cliff Fendlerbush (Fendlera rupicola)

Ocotillo (Fouquieria splendens). Ocotillo (Fouquieria splendens)

Barrel Cactus (Ferocactus wislizeni) Barrel Cactus (Ferocactus sp.)

Woodland Strawberry (Fragaria vesca) Woodland Strawberry (Fragaria vesca)

California Flannelbush California Flannelbush (Fremontodendron californicum)

Chocolate lily (Fritillaria camschatcensis). Chocolate lily (Fritillaria camschatcensis)

Yellow Fritillary (Fritillaria pudica). Yellow Fritillary (Fritillaria pudica)

Gallery: G

Blanketflower, Gaillardia aristata. Blanketflower (Gaillardia aristata)

Showy Orchid (Galearis spectabilis). Showy Orchid (Galearis spectabilis)

Creeping Snowberry (Gaultheria hispidula). Creeping Snowberry (Gaultheria hispidula)

Closed Bottle Gentian (Gentiana andrewsii). Closed Bottle Gentian (Gentiana andrewsii)

Mountain Bog Gentian (Gentiana calycosa). Mountain Bog Gentian (Gentiana calycosa)

Mendocino gentian (Gentiana setigera). Mendocino gentian (Gentiana setigera)

Meadow Fringed Gentian (Gentianopsis thermalis). Meadow Fringed Gentian (Gentianopsis thermalis)

Wild Geranium (Geranium maculatum). Wild Geranium (Geranium maculatum)

White Crane's Bill (Geranium richardsonii). White Crane's Bill (Geranium richardsonii)

Large-leaf Avens (Geum macrophyllum). Large-leaf Avens (Geum macrophyllum).

mountain avens, Geum peckii. Mountain avens (Geum peckii)

Old Man’s Whiskers (Geum triflorum). Old Man’s Whiskers (Geum triflorum)

Bird’s-eyes Gilia (Gilia tricolor) Bird’s-eyes Gilia (Gilia tricolor)

Rattlesnake Plantain (Goodyera oblongifolia). Rattlesnake Plantain (Goodyera oblongifolia)

Downy Rattlesnake Plantain (Goodyera pubescens). Downy Rattlesnake Plantain (Goodyera pubescens)

Golden Hedgehyssop (Gratiola aurea). Golden Hedgehyssop (Gratiola aurea)

Curlycup Gumweed (Grindelia squarrosa) Curlycup Gumweed (Grindelia squarrosa)

Cedar Apple Rust (Gymnosporangium juniperi-virginianae). Cedar Apple Rust (Gymnosporangium juniperi-virginianae)

Gallery: H

Big-leaf witch-hazel (Hamamelis ovalis). Big-leaf witch-hazel (Hamamelis ovalis)

American Witchhazel, Hamamelis virginiana. American Witchhazel (Hamamelis virginiana L.)

Common sneezeweed (Helenium autumnale var. autumnale). Common sneezeweed (Helenium autumnale var. autumnale)

Carolina Rockrose (Helianthemum carolinianum). Carolina Rockrose (Helianthemum carolinianum)

Common Sunflower (Helianthus annuus). Common Sunflower (Helianthus annuus)

Hairy Sunflower (Helianthus hirsutus). Hairy Sunflower (Helianthus hirsutus)

Ashy Sunflower (Helianthus mollis). Ashy Sunflower (Helianthus mollis)

Showy Goldeneye (Heliomeris multiflora). Showy Goldeneye (Heliomeris multiflora)

Hepatica. Hepatica (Hepatica nobilis)

Crested Coralroot Orchid (Hexalectris spicata) Crested Coralroot Orchid (Hexalectris spicata)

SHairy-Fruited Hibiscus (Hibiscus lasiocarpos). Hairy-Fruited Hibiscus (Hibiscus lasiocarpos)

American Featherfoil (Hottonia inflata). American Featherfoil (Hottonia inflata)

Wild Hydrangea (Hydrangea arborescens). Wild Hydrangea (Hydrangea arborescens)

Goldenseal (Hydrastis canadensis). Goldenseal (Hydrastis canadensis)

Ballhead Waterleaf (Hydrophyllum capitatum). Ballhead Waterleaf (Hydrophyllum capitatum)

Gallery: I

Streambank Wild Hollyhock, Iliamna rivularis. Streambank Wild Hollyhock (Iliamna rivularis)

Jewelweed (Impatiens capensis). Jewelweed (Impatiens capensis)

Scarlet Gilia (Ipomopsis aggregata). Scarlet Gilia (Ipomopsis aggregata)

Spiked Ipomopsis (Ipomopsis spicata). Spiked Ipomopsis (Ipomopsis spicata)

Dwarf Lake Iris, Iris lacustris. Dwarf Lake Iris (Iris lacustris)

Dwarf Iris, Iris verna Dwarf Iris (Iris verna)

Gordon’s Ivesia (Ivesia gordonii) Gordon’s Ivesia (Ivesia gordonii)

Gallery: J

Cliff Jamesia (Jamesia americana). Cliff Jamesia (Jamesia americana)

twinleaf, Jeffersonia diphylla. Twinleaf (Jeffersonia diphylla)

Baltic Rush (Juncus arcticus) Baltic Rush (Juncus arcticus)

American Water Willow (Justicia americana). American Water Willow (Justicia americana).

Gallery: K

Bog Laurel (Kalmia microphylla). Bog Laurel (Kalmia microphylla)

Cooley's False Buttercup (Kumlienia cooleyae). Cooley's False Buttercup (Kumlienia cooleyae)

Gallery: L

Bog Labrador Tea (Ledum groenlandicum). Bog Labrador Tea (Ledum groenlandicum)

Common duckweed (Lemna minor). Common duckweed (Lemna minor)

Star Lily (Leucocrinum montanum). Star Lily (Leucocrinum montanum)

Pygmy Bitterroot (Lewisia pygmaea) Pygmy Bitterroot (Lewisia pygmaea)

Bitterroot (Lewisia rediviva) Bitterroot (Lewisia rediviva)

Sacajawea's bitterroot, Lewisia sacajaweana. Sacajawea's bitterroot (Lewisia sacajaweana)

savanna blazing star, Liatris scariosa var. nieuwlandii. Savanna blazing star (Liatris scariosa var. nieuwlandii)

Columbian Lily (Lilium columbianum). Columbian Lily (Lilium columbianum)

Western Lily and butterfly Western Lily (Lilium occidentale)

Washington lily, Lilium washingtonianum. Washington lily (Lilium washingtonianum)

Bog Spicebush, Lindera subcoriacea. Bog Spicebush (Lindera subcoriacea)

Twinflower (Linnaea borealis) Twinflower (Linnaea borealis)

Closeup of the Lily-leaved Twayblade. Lily-leaved Twayblade (Liparis liliifolia)

Hoary Puccoon (Lithospermum canescens) Hoary Puccoon (Lithospermum canescens)

Lungwort. Lungwort (Lobaria pulmonaria)

cardinal flower, Lobelia cardinalis. Cardinal Flower (Lobelia cardinalis)

Dortmann's Cardinalflower (Lobelia dortmanna) Dortmann's Cardinalflower (Lobelia dortmanna)

Great Blue Lobelia (Lobelia siphilitica). Great Blue Lobelia (Lobelia siphilitica)

Nineleaf Biscuitroot (Lomatium triternatum). Nineleaf Biscuitroot (Lomatium triternatum)

twinberry honeysuckle, Lonicera involucrata. Twinberry Honeysuckle (Lonicera involucrata)

Partridge-foot (Luetkea pectinata). Partridge-foot (Luetkea pectinata)

sundial lupine, Lupinus perennis. Sundial or Wild Lupine (Lupinus perennis)

Sabin's Lupine, Lupinus sabinianus. Sabin's Lupine (Lupinus sabinianus)

Western Skunk Cabbage (Lysichiton americanus). Western Skunk Cabbage (Lysichiton americanus)

Gallery: M

Marchantia (Marchantia polymorpha). Marchantia (Marchantia polymorpha)

Baldwyn's Milkvine. Baldwyn's Milkvine (Matelea baldwyniana)

Stream bogmoss, Mayaca fluviatilis. Stream bogmoss (Mayaca fluviatilis)

Plains Blackfoot (Melampodium leucanthum). Plains Blackfoot (Melampodium leucanthum)

Smoothstem blazingstar (Mentzelia laevicaulis). Smoothstem blazingstar (Mentzelia laevicaulis)

Short-styled Bluebell (Mertensia brevistyla) Short-styled Bluebell (Mertensia brevistyla)

Lewis’s Monkeyflower (Mimulus lewisii) Lewis’s Monkeyflower (Mimulus lewisii)

Twinflower Sandwort (Minuartia obtusiloba) Twinflower Sandwort (Minuartia obtusiloba)

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

Colorado Four O'clock (Mirabilis multiflora). Colorado Four O'clock (Mirabilis multiflora)

Partridge Berry flower, Mitchella repens. Partridge Berry (Mitchella repens)

scarlet beebalm Scarlet Beebalm (Monarda didyma)

Wood Nymph (Moneses uniflora). Wood Nymph (Moneses uniflora)

Ghost Pipe, Monotropa uniflora. Ghost Pipe (Monotropa uniflora)

Alpine Forget-Me-Not (Myosotis asiatica). Alpine Forget-Me-Not (Myosotis asiatica)

Gallery: N

Watercress (Nasturtium officinale) Watercress (Nasturtium officinale)

Arctic Kidney Lichen (Nephroma arcticum). Arctic Kidney Lichen (Nephroma arcticum)

Pimpled kidney lichen (Nephroma resupinatum). Pimpled kidney lichen (Nephroma resupinatum)

Indian olive Indian Olive (Nestronia umbellula)

Shasta snow-wreath, Neviusia cliftonii. Shasta snow-wreath (Neviusia cliftonii)

White Water Lily flower and leaf. White Water Lily (Nymphaea odorata)

Gallery: O

Tufted evening-primrose Tufted evening-primrose (Oenothera caespitosa)

Showy Evening Primrose (Oenothera speciosa). Showy Evening Primrose (Oenothera speciosa)

Devil's Club (Oplopanax horridus). Devil's Club (Oplopanax horridus)

Prickly pear cactus. Prickly Pear (Opuntia basilaris)

Eastern Prickly Pear (Opuntia humifusa). Eastern Prickly Pear (Opuntia humifusa)

Great Plains Prickly Pear (Opuntia polyacantha). Great Plains Prickly Pear (Opuntia polyacantha)

One-flowered Cancer Root (Orobanche uniflora). One-flowered Cancer Root (Orobanche uniflora)

Redwood Sorrel (Oxalis oregana). Redwood Sorrel (Oxalis oregana)

Common Yellow Wood Sorrel (Oxalis stricta). Common Yellow Wood Sorrel (Oxalis stricta)

Gallery: P

Dwarf Ginseng, Panax trifolius. Dwarf Ginseng (Panax trifolius)

Pale Poppy Pale Poppy (Papaver alboroseum)

Northern Grass of Parnassus (Parnassia Palustris). Northern Grass of Parnassus (Parnassia Palustris)

Silverling (Paronychia argyrocoma). Silverling (Paronychia argyrocoma)

Mountain-lover (Paxistima myrsinites) Mountain-lover (Paxistima myrsinites)

Lemonscent Lemonscent (Pectis angustifolia)

Wood Betony (Pedicularis canadensis). Wood Betony (Pedicularis canadensis)

Leafy lousewort (Pedicularis racemosa) Leafy lousewort (Pedicularis racemosa)

Simpson's hedgehog cactus, Pediocactus simpsonii. Simpson's Hedgehog Cactus (Pediocactus simpsonii)

Large beardtongue. Large Beardtongue (Penstemon grandiflorus)

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

Payette Beardtongue, Penstemon payettensis. Payette Beardtongue (Penstemon payettensis)

Bridges’ Penstemon (Penstemon rostriflorus). Bridges’ Penstemon (Penstemon rostriflorus)

Rydberg’s penstemon (Penstemon rydbergii) Rydberg’s penstemon (Penstemon rydbergii)

Littlecup Penstemon Littlecup Penstemon (Penstemon sepalulus)

Sweet coltsfoot (Petasites sagittatus). Sweet coltsfoot (Petasites sagittatus)

Rock Spiraea (Petrophytum caespitosum). Rock Spiraea (Petrophytum caespitosum)

Silky Phacelia (Phacelia sericea). Silky Phacelia (Phacelia sericea)

Quill Fameflower (Phemeranthus teretifolius). Quill Fameflower (Phemeranthus teretifolius)

Opal phlox (Phlox opalensis). Opal phlox (Phlox opalensis)

American Pokeweed (Phytolacca americana). American Pokeweed (Phytolacca americana)

Yellow Fringed Orchid, Platanthera ciliaris. Yellow Fringed Orchid (Platanthera ciliaris)

White Bog Orchid (Platanthera dilatata). White Bog Orchid (Platanthera dilatata)

Yellow Fringeless Orchid (Platanthera integra) Yellow Fringeless Orchid (Platanthera integra)

White Fringeless Orchid, Platanthera integrilabia. White Fringeless Orchid (Platanthera integrilabia)

Eastern Prairie Fringed Orchid, Platanthera leucophaea. Eastern Prairie Fringed Orchid (Platanthera leucophaea)

Blunt-leaf Orchid (Platanthera obtusata). Blunt-leaf Orchid (Platanthera obtusata)

Platanthera orbiculata, stem and flowers. Round-leaved Rein Orchid (Platanthera orbiculata)

Lesser Purple Fringed Orchid (Platanthera psycodes). Lesser Purple Fringed Orchid (Platanthera psycodes)

James' galleta (Pleuraphis jamesii). James' galleta (Pleuraphis jamesii)

Rose Pogonia (Pogonia ophioglossoides). Rose Pogonia (Pogonia ophioglossoides)

Redwhisker clammyweed, Polanisia dodecandra Redwhisker clammyweed (Polanisia dodecandra)

Rocky Mountain Jacob's-ladder (Polemonium confertum). Rocky Mountain Jacob's-ladder (Polemonium confertum)

Western Polemonium (Polemonium occidentale). Western Polemonium (Polemonium occidentale)

Jacob’s Ladder (Polemonium reptans) Jacob’s Ladder (Polemonium reptans)

Appalachian Jacob's ladder. Appalachian Jacob's ladder (Polemonium vanbruntiae)

Sticky Polemonium, Polemonium viscosum. Sticky Polemonium (Polemonium viscosum)

Whiteflower Leafcup (Polymnia canadensis). Whiteflower Leafcup (Polymnia canadensis)

Fringed Polygala, Gaywings, or Flowering Wintergreen, Polygala paucifolia. Gaywings (Polygala paucifolia Willd.)

Seneca Snakeroot (Polygala senega) Seneca Snakeroot (Polygala senega)

Water Smartweed (Polygonum amphibium). Water Smartweed (Polygonum amphibium)

Pennsylvania Smartweed (Polygonum pensylvanicum). Pennsylvania Smartweed (Polygonum pensylvanicum)

Black Cottonwood (Populus balsamifera ssp. trichocarpa) Black Cottonwood (Populus balsamifera ssp. trichocarpa)

Alpine Rattlesnake Root (Prenanthes boottii). Alpine Rattlesnake Root (Prenanthes boottii)

Parry's Primrose (Primula parryi). Parry's Primrose (Primula parryi)

Islay, Prunus ilicifolia. Islay (Prunus ilicifolia)

Woodland Pinedrops, Pterospora andromedea. Woodland Pinedrops (Pterospora andromedea)

Pasqueflower (Pulsatilla patens var. multifida). Pasqueflower (Pulsatilla patens var. multifida)

Bitterbrush. Bitterbrush (Purshia tridentata)

Gallery: Q

Blue Oak leaves and acorns. Blue Oak (Quercus douglasii)

Gallery: R

White Water Crowfoot (Ranunculus Aquatilis)White Water Crowfoot (Ranunculus aquatilis)

Jupiter Buttercup (Ranunculus jovis). Jupiter / Utah Buttercup (Ranunculus jovis)

Smooth azalea (Rhododendron arborescens) Smooth azalea (Rhododendron arborescens)

Rhodora, Rhododendron canadense Rhodora (Rhododendron canadense)

Rhodora, Rhododendron canadense Cumberland Azalea (Rhododendron cumberlandense )

Lapland rosebay, Rhododendron lapponicum. Lapland Rosebay (Rhododendron lapponicum)

Western Azalea (Rhododendron occidentale) Western Azalea (Rhododendron occidentale)

Staghorn Sumac (Rhus typhina). Staghorn Sumac (Rhus typhina)

Golden Currant (Ribes aureum). Golden Currant (Ribes aureum)

Red-flowering Currant (Ribes sanguineum). Red-flowering Currant (Ribes sanguineum)

Black Locust (Robinia pseudoacacia). Black Locust (Robinia pseudoacacia)

New Mexico locust (Robinia neomexicana). New Mexico locust (Robinia neomexicana)

Carolina Rose (Rosa carolina) Carolina Rose (Rosa carolina)

swamp rose, Rosa palustris. Swamp Rose (Rosa palustris)

Prairie Rose. Prairie Rose (Rosa setigera)

Delicious Raspberry (Rubus deliciosus) Delicious Raspberry (Rubus deliciosus)

Thimbleberry. Thimbleberry (Rubus parviflorus)

Salmonberry (Rubus spectabilis). Salmonberry (Rubus spectabilis)

Salmonberry (Rubus spectabilis). Fringeleaf Wild Petunia (Ruellia humilis Nutt.)

Gallery: S

Arrowhead (Sagittaria cuneata). Arrowhead (Sagittaria cuneata)

Giant Arrowhead (Sagittaria montevidensis) Giant Arrowhead (Sagittaria montevidensis)

Blue Sage (Salvia azurea var. grandiflora). Blue Sage (Salvia azurea var. grandiflora)

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

American Burnet (Sanguisorba canadensis). American Burnet (Sanguisorba canadensis)

Snow Plant Snow Plant (Sarcodes sanguinea)

Yellow Pitcherplant (Sarracenia flava). Yellow Pitcherplant (Sarracenia flava)

Purple Pitcherplant (Sarracenia purpurea) Purple Pitcherplant (Sarracenia purpurea)

White mountain-saxifrage (Saxifraga paniculata). White mountain-saxifrage (Saxifraga paniculata)

Mimbres figwort, Scrophularia macrantha. Mimbres figwort (Scrophularia macrantha)

Cockerell’s Stonecrop (Sedum cockerellii) Cockerell’s Stonecrop (Sedum cockerellii)

Widow’s Cross (Sedum pulchellum). Widow’s Cross (Sedum pulchellum)

Creeping Sibbaldia (Sibbaldia procumbens). Creeping Sibbaldia (Sibbaldia procumbens)

Moss Campion (Silene acaulis) Moss Campion (Silene acaulis)

Wherry's Catchfly (Silene caroliniana var. wherryi) Wherry's Catchfly (Silene caroliniana var. wherryi)

Royal Catchfly (Silene regia) Royal Catchfly (Silene regia)

Scarlet Catchfly (Silene subciliata) Scarlet Catchfly (Silene subciliata)

fire pink, Silene virginica. Fire Pink (Silene virginica)

Cut-leaf Prairie-Dock (Silphium pinnatifidum). Cut-leaf Prairie-Dock (Silphium pinnatifidum)

Prairie Dock (Silphium terebinthinaceum). Prairie Dock (Silphium terebinthinaceum)

Blue-eyed Grass (Sisyrinchium albidum). Blue-eyed Grass (Sisyrinchium albidum)

Hairy Leafcup (Smallanthus uvedalius). Hairy Leafcup (Smallanthus uvedalius)

Alpine False Candytuft (Smelowskia calycina var. americana). Alpine False Candytuft (Smelowskia calycina var. americana)

Tall Goldenrod (Solidago altissima). Tall Goldenrod (Solidago altissima)

Ouachita Goldenrod (Solidago ouachitensis) Ouachita Goldenrod (Solidago ouachitensis)

Indian pink, Spigelia marilandica. Indian Pink (Spigelia marilandica)

Ute Lady's Tresses (Spiranthes diluvialis). Ute Lady's Tresses (Spiranthes diluvialis)

hooded ladies'-tresses(Spiranthes Romanzoffiana). hooded ladies'-tresses (Spiranthes Romanzoffiana)

Stemless Goldenweed (Stenotus Acaulis). Stemless Goldenweed (Stenotus Acaulis)

Silky Camellia (Stewartia malacodendron). Silky Camellia (Stewartia malacodendron)

Twisted Stalk (Streptopus amplexifolius). Twisted Stalk (Streptopus amplexifolius)

Pencil Flower (Stylosanthes Biflora). Pencil Flower (Stylosanthes Biflora)

New England Aster (Symphyotrichum novae-angliae). New England Aster (Symphyotrichum novae-angliae)

Skunk Cabbage, Symplocarpus foetidus. Eastern Skunk Cabbage (Symplocarpus foetidus)

Mountain Kittentails (Synthyris missurica) Mountain Kittentails (Synthyris missurica)

Gallery: T

Horned Dandelion (Taraxacum ceratophorum). Horned Dandelion (Taraxacum ceratophorum)

Goat's Rue, Tephrosia virginiana. Goat's Rue (Tephrosia virginiana)

Bitterweed (Tetraneuris acaulis var. acaulis). Bitterweed (Tetraneuris acaulis var. acaulis)

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

Fewflower meadow-rue (Thalictrum sparsiflorum) Fewflower meadow-rue (Thalictrum sparsiflorum)

Crane-fly Orchid (Tipularia discolor) Crane-fly Orchid (Tipularia discolor)

Wyoming Townsend Daisy (Townsendia alpigena). Wyoming Townsend Daisy (Townsendia alpigena)

Western Poison-ivy (Toxicodendron rydbergii). Western Poison-ivy (Toxicodendron rydbergii)

Appalachian Bristle Fern (Trichomanes boschianum). Appalachian Bristle Fern (Trichomanes boschianum)

Starflower, Trientalis borealis. Starflower (Trientalis borealis)

Dwarf Clover (Trifolium nanum) Dwarf Clover (Trifolium nanum)

Catesby’s Trillium (Trillium catesbaei) Catesby’s Trillium (Trillium catesbaei)

Northern Nodding Trillium (Trillium cernuum). Northern Nodding Trillium (Trillium cernuum)

Little sweet Betsy (Trillium cuneatum) Little Sweet Betsy (Trillium cuneatum)

Decumbent Trillium (Trillium decumbens). Decumbent Trillium (Trillium decumbens)

Mottled Wakerobin (Trillium discolor). Mottled Wakerobin (Trillium discolor)

red trillium, Trillium erectum Red Trillium (Trillium erectum)

Nodding Wakerobin (Trillium flexipes). Nodding Wakerobin (Trillium flexipes)

Graceful Trillium (Trillium gracile). Graceful Trillium (Trillium gracile)

Great White Trillium (Trillium grandiflorum). Great White Trillium (Trillium grandiflorum)

Louisiana Trillium (Trillium ludovicianum). Louisiana Trillium (Trillium ludovicianum)

Yellow Trillium (Trillium luteum) Yellow Trillium (Trillium luteum)

Snow Trillium (Trillium nivale). Snow Trillium (Trillium nivale)

Salmon Mountain wake robin (Trillium ovatum var. oettingeri). Salmon Mountain wake robin (Trillium ovatum var. oettingeri)

Western White Trillium. Western White Trillium (Trillium ovatum var. ovatum)

Persistent Trillium, Trillium persistens. Persistent Trillium (Trillium persistens)

Dwarf Trillium Dwarf Trillium (Trillium pusillum var. pusillum)

Dwarf Trillium Virginia Dwarf Trillium (Trillium pusillum var. virginianum)

Relict Trillium (Trillium reliquum) Relict Trillium (Trillium reliquum)

Southern Nodding Trillium (Trillium rugelii). Southern Nodding Trillium (Trillium rugelii)

Toadshade (Trillium sessile). Toadshade (Trillium sessile)

sweet white trillium, Trillium simile. Sweet white trillium (Trillium simile)

A individual flower with three red pedals and three green leaves. Rainbow Wakerobin (Trillium sulcatum)

Texas Wakerobin (Trillium texanum) Texas Wakerobin (Trillium texanum)

Painted Trillium (Trillium undulatum). Painted Trillium (Trillium undulatum)

Vasey's Trillium, Trillium vaseyi. Vasey's Trillium (Trillium vaseyi)

Green Trillium (Trillium viride). Green Trillium (Trillium viride)

Orange-Fruited Horse Gentian (Triosteum aurantiacum) Orange-Fruited Horse Gentian (Triosteum aurantiacum)

Three Birds Orchid, Triphora trianthophora Three Birds Orchid (Triphora trianthophora)

Ithuriel's Spear Ithuriel's Spear (Triteleia laxa)

American globeflower (Trollius laxus) American globeflower (Trollius laxus)

Gallery: U

Frosted rock tripe (Umbilicaria americana). Frosted rock tripe (Umbilicaria americana)

common bladderwort, Utricularia macrorhiza Common bladderwort (Utricularia macrorhiza)

Bearded Lichen (Usnea longissima). Bearded Lichen (Usnea longissima)

Gallery: V

Dwarf Bilberry (Vaccinium cespitosum). Dwarf Bilberry (Vaccinium cespitosum)

Carolina Crownbeard (Verbesina walteri). Carolina Crownbeard (Verbesina walteri)

Marsh Blue Violet, Viola cucullata. Marsh Blue Violet (Viola cucullata)

Nuttall's Violet, Viola nuttallii. Nuttall's Violet (Viola nuttallii)

Giant Ironweed (Vernonia gigantea). Giant Ironweed (Vernonia gigantea)

American Brooklime (Veronica americana). American Brooklime (Veronica americana)

Culver's Root (Veronicastrum virginicum). Culver's Root (Veronicastrum virginicum)

Birdfoot Violet, Viola pedata. Birdfoot Violet (Viola pedata)

Arizona Grape (Vitis arizonica). Arizona Grape (Vitis arizonica)

Gallery: W

white mule's ears, Wyethia helianthoides. White Mule's Ears (Wyethia helianthoides)

American holly. Plants of the Winter Solstice

Gallery: X

Colorado tansyaster (Xanthisma coloradoense). Colorado tansyaster (Xanthisma coloradoense)

Bear-grass (Xerophyllum tenax). Bear-grass (Xerophyllum tenax)

Smooth Woody Aster (Xylorhiza glabriuscula). Smooth Woody Aster (Xylorhiza glabriuscula)

Drummond’s yellow-eyed grass (Xyris drummondii) Drummond’s yellow-eyed grass (Xyris drummondii)

Gallery: Y

Banana Yucca (Yucca baccata) Banana Yucca (Yucca baccata)

Soapweed Yucca (Yucca glauca)
. Soapweed Yucca (Yucca glauca)

Gallery: Z

Mountain Deathcamas (Zigadenus elegans). Mountain Deathcamas (Zigadenus elegans)

"Wildrice (Zizania aquatica) growing along a lake channel in Ottawa Wildrice (Zizania aquatica) bed on lake edge.  Photo by: Sue Trull" Annual Wildrice (Zizania aquatica L.)

Wild Zinnia (Zinnia grandiflora). Wild Zinnia (Zinnia grandiflora)