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Bold=Widely accepted scientific name provided by John Kartesz, ultimate authority for all plant names on this web site.
Not bold = synonym for the scientific name.


ssp.=subspecies       var.=variety
GENUS AND SPECIES COMMON NAME SCIENTIFIC FAMILY NAME COMMON FAMILY NAME COLOR OF FLOWER,
TYPE OF PLANT
VEGETATION ZONE HABITAT SEASON
OF
BLOOM
        Flower, (brown/green, blue/purple,  pink/red/orange, white, or yellow), 
fern, 
or tree.
Alpine, subalpine, montane, foothills (including mesas), semi-deserts (including canyons). Tundra, scree, woodlands, wetlands, streamsides, openings, meadows, rocks, canyons, shrublands, disturbed areas (roadsides, mined areas, timbered lands, avalanche chutes, rock slides), semi-deserts. Spring,
summer,
fall.
Quercus gambelii Gambel's Oak Fagaceae Beech Tree Foothills, montane Shrublands, woodlands Spring
Quercus turbinella Sonoran Live Oak Fagaceae Beech Tree Foothills Shrublands, woodlands Spring
Ranunculus alismifolius
var. montanus
Plantain-leaf
Buttercup
Ranunculaceae Buttercup Yellow Montane, subalpine Meadows, wetlands Spring, summer
Ranunculus eschscholtzii Eschscholtz's
Buttercup
Ranunculaceae Buttercup Yellow Subalpine, alpine Woodlands, meadows Summer
Ranunculus glaberrimus
var.
ellipiticus
Sagebrush
Buttercup
Ranunculaceae Buttercup Yellow Foothills, montane Meadows, wetlands Spring, summer
Ranunculus inamoenus
var.
inamoenus
Graceful Buttercup Ranunculaceae Buttercup Yellow Montane, subalpine Woodlands, meadows Summer
Ranunculus macauleyi
var.
macauleyi
Macauley's
Buttercup
Ranunculaceae Buttercup Yellow Subalpine, alpine Meadows Summer
Ranunculus uncinatus Woodland Buttercup Ranunculaceae Buttercup Yellow Montane Woodlands, openings Spring
Rhamnus smithii Smith's
Buckthorn
Rhamnaceae Buckthorn Yellow Foothills Woodlands, openings Summer
Rhaponticum repens Russian Knapweed Asteraceae Sunflower Pink Semi-desert,
foothills
Meadows, disturbed areas Summer,
fall
Rhinotropis subspinosa Milkwort Polygalaceae Milkwort Pink Semi-desert Sand, gravel Spring
Rhodiola integrifolia King's Crown Crassulaceae Stonecrop Red Subalpine, alpine Meadows, tundra Summer
Rhodiola rhodantha
Rose Crown
(Queen's Crown)
Crassulaceae Stonecrop Pink Subalpine, alpine Meadows, tundra, wetlands Summer
Rhus aromatica Aromatic Sumac Anacardiaceae Sumac Yellow Semi-desert, foothills, montane Woodlands, canyons Spring
Rhus glabra Smooth Sumac Anacardiaceae Sumac Tree foothills Woodlands, openings Summer
Ribes aureum Golden Currant Grossulariaceae Gooseberry White Foothills Shrublands, meadows, streamsides Spring
Wax Currant Grossulariaceae Gooseberry White Semi-desert Shrublands, woodlands Spring
Ribes coloradense Colorado Currant Grossulariaceae Gooseberry Pink Montane, subalpine Openings, sparse woodlands Summer
Ribes inerme var. inerme Whiskey
Gooseberry
Grossulariaceae Gooseberry Pink Montane Woodlands, streamsides Spring
Ribes laxiflorum Trailing Currant Grossulariaceae Gooseberry Pink Montane, subalpine Openings, sparse woodlands Summer
Ribes montigenum Mountain Currant Grossulariaceae Gooseberry Pink Montane, subalpine Woodlands, streamsides Spring
Ribes wolfii Wolf's Currant Grossulariaceae Gooseberry White Montane, subalpine Woodlands, streamsides Spring
Robinia neomexicana New Mexico Locust Fabaceae Pea Rose Semi-desert Meadows, streamsides, lawns Summer
Rorippa alpina Alpine Yellowcress Brassicaceae Mustard Yellow Montane, subalpine Wet areas, streamsides Spring, summer
Rosa woodsii Wild Rose Rosaceae Rose Pink Foothills, montane, subalpine Woodlands, shrublands, streamsides Spring, summer
Rubacer parviflorum Thimbleberry Rosaceae Rose White Montane, subalpine Woodlands, disturbed areas Spring, summer
Rubus idaeus Red Raspberry Rosaceae Rose White Montane, subalpine Openings, scree Summer
Rubus parviflorus
var.
parviflorus
Thimbleberry Rosaceae Rose White Montane, subalpine Woodlands, disturbed areas Spring, summer
Rudbeckia ampla Golden Glow Asteraceae Sunflower Yellow Montane, subalpine Streamsides Summer, fall
Golden Glow Asteraceae Sunflower Yellow Montane, subalpine Streamsides Summer, fall
Rumex densiflorus Dense-flowered
Dock
Polygonaceae Buckwheat Brown Montane, Alpine Wet meadows Summer
Rumex hymenosepalus Wild Rhubarb Polygonaceae Buckwheat Brown Semi-desert Sand Spring
Rydbergia grandiflora Old Man
of the Mountains
Asteraceae Sunflower Yellow Alpine Tundra Summer

GENUS AND SPECIES COMMON NAME SCIENTIFIC FAMILY NAME COMMON FAMILY NAME
COLOR OF FLOWER, TYPE OF PLANT
VEGETATION ZONE HABITAT SEASON
OF
BLOOM
Sabina deppeana Alligator Juniper Cupressaceae Cypress Tree Semi-desert, foothills Woodlands Spring
Sabina monosperma One-seed Juniper Cupressaceae Cypress Tree Semi-desert Shrublands, woodlands Spring
Sabina osteosperma Utah Juniper Cupressaceae Cypress Tree Semi-desert, foothills Woodlands Spring
Sabina scopulorum Rocky Mountain Juniper Cupressaceae Cypress Tree Semi-desert, foothills, montane Woodlands Spring
Salix brachycarpa Willow Salicaceae Willow Tree Montane to alpine Wetlands, openings Summer
Salix drummondiana Drummond's Willow Salicaceae Willow Tree Foothills to sub-alpine Wetlands, openings Spring, summer
Salix exigua Sandbar or Coyote Willow Salicaceae Willow Tree Semi-desert, foothills, montane Streamsides Spring, summer
Salix leavigata Peach-leaf Willow Salicaceae Willow Tree Plains, foothills Wetlands Spring, summer
Salix matsudana Navajo Willow Salicaceae Willow Tree Semi-desert, foothills Homes Spring
Salix monticola Rocky Mountain Willow Salicaceae Willow Tree Montane Wetlands Summer
Salix nivalis Snow Willow Salicaceae Willow Pink Alpine Tundra Summer
Salix petrophila Rock Willow Salicaceae Willow Pink Alpine Tundra Summer
Salix planifolia Plane-leaf Willow Salicaceae Willow Tree Montane to sub-alpine Wetlands, openings Summer
Salix scouleriana

Scouler's Willow

Salicaceae Willow Tree Montane Woodlands Summer
Salsola australis Tumbleweed Amaranthaceae
formerly
Chenopodiaceae
Amaranth
formerly
Goosefoot
White Semi-desert, foothills Sand, shrublands, grasslands Summer, fall
Salsola paulsenii Tumbleweed Amaranthaceae
formerly
Chenopodiaceae
Amaranth
formerly
Goosefoot
White Semi-desert, foothills Sand, shrublands, grasslands Summer, fall
Sambucus coerulea Blue Elderberry Adoxaceae
formerly
Caprifoliaceae
Muskroot
formerly
Honeysuckle
White Montane, subalpine Disturbed areas, openings Spring
Sambucus microbotrys Red Elderberry Adoxaceae
formerly
Caprifoliaceae
Muskroot
formerly
Honeysuckle
White Montane, subalpine Disturbed areas, openings Spring
Blue Elderberry Adoxaceae
formerly
Caprifoliaceae
Muskroot
formerly
Honeysuckle
White Montane, subalpine Disturbed areas, openings Spring
Red Elderberry Adoxaceae
formerly
Caprifoliaceae
Muskroot
formerly
Honeysuckle
White Montane, subalpine Disturbed areas, openings Spring
Sarcobatus vermiculatus Greasewood Sarcobataceae
formerly
Chenopodiaceae
Greasewood
formerly
Goosefoot
Yellow Semi-desert Shrublands, openings Spring, summer
Saxifraga austromontana
Syn: Saxifraga bronchialis
ssp.
austromontana
Dotted Saxifrage
Saxifragaceae Saxifrage White Subalpine Rocks Summer
Saxifraga caespitosa Tufted
Saxifrage
Saxifragaceae Saxifrage White Subalpine, 
alpine
Mossy, rocky areas Summer
Saxifraga cernua Nodding Saxifrage Saxifragaceae Saxifrage White Subalpine, 
alpine
Mossy, rocky areas Summer
Saxifraga chrysantha  Golden Saxifrage Saxifragaceae Saxifrage Yellow  Alpine Mossy, rocky areas Summer
Saxifraga flagellaris
ssp.
crandallii
Whiplash Saxifrage Saxifragaceae Saxifrage Yellow  Alpine Mossy, rocky areas Summer
Saxifraga hyperborea
variety debilis
Pygmy Saxifrage Saxifragaceae Saxifrage White Subalpine, alpine Mossy, rocky areas Summer
Saxifraga odontoloma Brook Saxifrage Saxifragaceae Saxifrage White Subalpine Streamsides Summer
Saxifraga rivularis Pygmy Saxifrage Saxifragaceae Saxifrage White Subalpine, alpine Mossy, rocky areas Summer
Scabrethia scabra Desert Mule's Ears Asteraceae Sunflower Yellow Semi-desert Shrublands, openings Spring, summer
Schoenocrambe linifolia Flaxleaf Mustard Brassicaceae Mustard Yellow Foothills Meadows, woodlands Spring, summer
Schkuhria multiflora Threadleaf Asteraceae Sunflower Yellow Foothills Sand, washes Spring, summer
Sclerocactus cloveriae Fishhook Cactus Cactaceae Cactus Pink Semi-desert Openings Spring
Sclerocactus glaucus Gray Fishhook Cactus Cactaceae Cactus Pink Semi-desert Openings Spring
Sclerocactus mesae-verdae Mesa Verde Fishhook Cactus Cactaceae Cactus Pink Semi-desert Openings Spring
Sclerocactus parviflorus
ssp. parviflorus
Fishhook Cactus Cactaceae Cactus Pink Semi-desert Woodlands, openings Spring
Scrophularia lanceolata Figwort Scrophulariaceae Snapdragon Pink Montane, subalpine Openings, scree Summer
Scorzonera laciniata Viper Grass Asteraceae Sunflower Yellow Foothills Disturbed areas Spring, summer
Scutellaria galericulata Skullcap Lamiaceae Mint Blue Montane Wetlands, meadows Summer
Sedum lanceolatum
ssp. lanceolatum
Yellow Stonecrop
Crassulaceae Stonecrop Yellow Foothills, montane, subalpine, alpine Rock and gravel openings Summer
Senecio amplectens
var. amplectens
Showy Ragwort Asteraceae Sunflower Yellow Subalpine, alpine Tundra, meadows, scree Summer
Senecio amplectens
var. holmii
Holm's Ragwort Asteraceae Sunflower Yellow Subalpine, alpine Meadows, scree Summer
Senecio atratus Black-tipped Ragwort Asteraceae Sunflower Yellow Subalpine, alpine Disturbed areas, meadows, openings Summer
Senecio bigelovii var. hallii Nodding Ragwort Asteraceae Sunflower Yellow Montane, subalpine Meadows Summer
Senecio crassulus Thick-leaf Ragwort Asteraceae Sunflower Yellow Montane, subalpine, alpine Meadows, openings Summer
Senecio eremophilus
var. kingii
Lonely Ragwort Asteraceae Sunflower Yellow Montane, subalpine Disturbed areas, openings Summer
Senecio flaccidus
var. flaccidus
Thread-leaf Ragwort Asteraceae Sunflower Yellow Semi-desert Shrublands, openings Summer
Senecio fremontii
var. blitoides
Fremont's Ragwort Asteraceae Sunflower Yellow Subalpine, alpine Scree Summer
Senecio fremontii
var. inexpectatus
Fremont's Ragwort Asteraceae Sunflower Yellow Subalpine, alpine Scree Summer
Senecio integerrimus
var. exaltatus
Lamb's Tongue Ragwort Asteraceae Sunflower Yellow Foothills, montane, subalpine Meadows, Oak brush Spring, summer
Senecio serra
var. admirabilis
Serrated Ragwort Asteraceae Sunflower Yellow Montane Moist woodlands, openings, streamsides Summer
Senecio soldanella Colorado Ragwort Asteraceae Sunflower Yellow Alpine Scree Summer
Senecio spartioides Broom Ragwort Asteraceae Sunflower Yellow Semi-desert, foothills Sandy gravelly openings, shrublands Summer, fall
Senecio triangularis Triangular Ragwort Asteraceae Sunflower Yellow Montane, subalpine Moist woodlands, openings, streamsides Summer
Senecio wootonii Wooton's Ragwort Asteraceae Sunflower Yellow Montane Woodlands Spring, summer
Seriphidium novum Black Sagebrush Asteraceae Sunflower Yellow Foothills, montane Shrublands Fall
Seriphidium tridentatum Big Sagebrush Asteraceae Sunflower Yellow Semi-desert, foothills, montane Shrublands Fall
Shepherdia argentea Silver Buffaloberry Elaeagnaceae Oleaster Yellow Foothills, montane Streamsides Spring
Shepherdia canadensis Canada Buffaloberry Elaeagnaceae Oleaster Yellow Foothills, montane, subalpine Moist woods Spring
Shepherdia rotundifolia Round Leaf Buffaloberry Elaeagnaceae Oleaster Yellow Semi-desert, canyons Shrublands, woodlands, openings Spring
Sibbaldia procumbens Sibbaldia Rosaceae Rose Yellow Alpine Tundra Summer
White Checkermallow Malvaceae Mallow White Montane, subalpine Streamside, wetlands Summer
Pink Checkermallow Malvaceae Mallow Pink Montane, subalpine Streamside, wetlands Summer
Silene acaulis
var. subacaulescens
Moss Campion Caryophyllaceae Pink Pink Alpine Tundra Summer
Silene antirrhina Sleepy Catchfly Caryophyllaceae Pink Pink Semi-desert, foothills Shrublands, openings Spring
Drummon's Catchfly Caryophyllaceae Pink White Montane, subalpine, alpine Meadows Summer
Menzies' Catchfly Caryophyllaceae Pink White Montane Open woodlands Summer
Sisymbrium altissimum Jim Hill Mustard Brassicaceae Mustard Yellow Semi-desert, foothills Disturbed areas Spring, summer
Sisymbrium linifolium Flaxleaf Mustard Brassicaceae Mustard Yellow Foothills Woodlands Spring
Sisyrinchium montanum
var.
montanum
Blue-eyed Grass Iridaceae Iris Blue Montane Meadows, openings Summer
Smelowskia americana American Smelowsky Brassicaceae Mustard Pink Alpine Meadows, tundra Summer
Smelowskia calycina
var. americana
Smelowsky Brassicaceae Mustard Pink Alpine Meadows, tundra Summer
Solidago canadensis Canada Goldenrod Asteraceae Sunflower Yellow Foothills, montane, subalpine Meadows, woodland openings Summer, fall
Solidago multiradiata
var. scopulorum
Rocky Mountain Goldenrod Asteraceae Sunflower Yellow Foothills, montane, subalpine Openings, woodlands Summer
Solidago nana Dwarf Goldenrod Asteraceae Sunflower Yellow Foothills Meadows Summer
Solidago simplex
var. simplex
Simple Goldenrod Asteraceae Sunflower Yellow Montane, subalpine, alpine Meadows Summer
Solidago velutina Velvet Goldenrod Asteraceae Sunflower Yellow Foothills, montane, subalpine Meadows, woodland openings Summer, fall
Sophora stenophylla Silvery Sophora Fabaceae Pea Blue Semi-desert Shrublands, sand Spring, summer
Sorbus scopulina Rowan Tree Rosaceae Rose Tree Montane Woodlands Summer
Sparganium angustifolium   Burreed Typhaceae Cattail White Montane Ponds Summer
Spergularia rubra Sand Spurrey Caryophyllaceae Pink Pink Montane Meadows, Woodlands Summer
Spergulastrum lanuginosum Woolly Chickweed Caryophyllaceae Pink White Montane, subalpine Woodlands Summer, fall
Sphaeralcea coccinea Scarlet Globe Mallow Malvaceae Mallow Orange/Red Semi-desert, foothills Woodlands, openings Spring, summer
Sphaeralcea grossulariifolia Large Leaf Globe Mallow Malvaceae Mallow Orange/Red Semi-desert Sandy canyon-sides Spring
Sphaeralcea leptophylla Narrow Leaf Globe Mallow Malvaceae Mallow Orange/Red Semi-desert Sandy canyons ides Spring, summer
Sphaeralcea parvifolia Triangular Leaf Globe Mallow Malvaceae Mallow Orange/Red Semi-desert, foothills Woodlands, openings Spring, summer
Spiranthes romanzoffiana Lady's Tresses Orchidaceae Orchid White      
Stanleya pinnata Prince's Plume Brassicaceae Mustard Yellow Semi-desert, foothills Woodlands, openings Spring
Stellaria irrigua Colorado Starwort Caryophyllaceae Pink White Alpine Scree Summer
Stellaria longifolia Long-leaf Starwort Caryophyllaceae Pink White Montane Moist meadows Summer
Stellaria longipes
ssp. longipes
Long-stalked Starwort Caryophyllaceae Pink White Foothills to alpine Meadows, woodlands, moist areas Summer, fall
Stellaria umbellata Umbrella Starwort Caryophyllaceae Pink Green Montane, subalpine, alpine Woodlands, moist areas, tundra Summer
Stenogonum flexum Flexible Buckwheat Polygonaceae Buckwheat Yellow Semi-desert Shrublands, openings Spring
Stenogonum salsuginosum Salty Buckwheat Polygonaceae Buckwheat Yellow Semi-desert Shrublands, openings Spring
Stenotus armerioides
var. armerioides
Ring Grass Asteraceae Sunflower Yellow Semi-desert, foothills Woodlands, openings Spring,
early summer
Stephanomeria exigua
var.
exigua
Whiteplume Wirelettuce Asteraceae Sunflower Pink Semi-desert Openings Summer.
fall
Stephanomeria pauciflora Few-flowered Wirelettuce Asteraceae Sunflower Pink Canyon foothills Rocks, openings Summer
Stephanomeria tenuifolia Slender-leaf Wirelettuce Asteraceae Sunflower Pink Canyon foothills Rocks, openings Summer
Streptanthella longirostris Little Twistflower Brassicaceae Mustard Yellow Semi-desert Canyons Spring
Streptanthus cordatus
var. cordatus
Heartleaf Twistflower Brassicaceae Mustard Yellow Semi-desert Canyons Spring
Streptopus amplexifolius Twistedstalk Liliaceae Lily White Subalpine Woodlands, streamsides Spring, summer
Streptopus fassettii Twistedstalk Liliaceae Lily White Subalpine Woodlands, streamsides Spring, summer
Strigosella africana African Mustard Brassicaceae Mustard Pink Semi-desert, foothills Disturbed areas, openings Spring, summer
Swertia perennis Star Gentian Gentianaceae Gentian Purple Subalpine Wetlands Summer, fall
Swida sericea Red-Osier Dogwood Cornaceae Dogwood White Montane, subalpine Streamsides Spring
Symphoricarpos longiflorus Long-flowered Snowberry Caprifoliaceae Honeysuckle Pink Semi-desert Shrublands, woodlands Spring
Symphoricarpos rotundifolius Round-leaf Snowberry Caprifoliaceae Honeysuckle Pink Montane, subalpine Woodlands Spring
Heather Aster Asteraceae Sunflower White Foothills, montane
Woodland openings, fields, roadsides
Summer, fall
Sickle Aster Asteraceae Sunflower White Foothills, montane
Woodland openings, fields, roadsides
Summer, fall
Leafy Aster
Asteraceae Sunflower Blue Foothills, montane Meadows, openings, disturbed areas Summer, fall
Spatula Aster
Asteraceae Sunflower Blue Montane Meadows, openings, streamsides Summer, fall
Talinum brevifolium   Montiaceae
formerly
Portulacaceae
Miner's Lettuce
formerly
Purslane
Pink Semi-desert
Rock depressions
Spring
Tamarix chinensis Tamarisk Tamaricaceae Tamarisk Tree Semi-desert, foothills
Streamsides
Spring, summer
Tamarix ramosissima Tamarisk Tamaricaceae Tamarisk Tree Semi-desert, foothills
Streamsides
Spring, summer
Taraxacum ceratophorum Alpine Dandelion Asteraceae Sunflower Yellow Subalpine, alpine
Meadows
Summer
Taraxacum officinale Dandelion Asteraceae Sunflower Yellow Foothills, montane, subalpine, alpine
Meadows, woodlands
Spring, summer
Taraxacum ovinum Alpine Dandelion Asteraceae Sunflower Yellow Subalpine, alpine
Meadows
Summer
Tetradymia canescens Gray Horsebrush Asteraceae Sunflower Yellow Semi-desert, foothills, montane
Openings, shrublands
Summer
Tetradymia spinosa Cat-claw Horsebrush Asteraceae Sunflower Yellow Semi-desert, foothills
Openings, shrublands
Spring
Tetraneuris acaulis var.
arizonica
Stemless Woolly Base Asteraceae Sunflower Yellow Foothills to sub-alpine
Openings
Summer
Tetraneuris ivesiana Perky Sue Asteraceae Sunflower Yellow Semi-desert, foothills
Woodlands, openings
Spring
Tetraneuris torreyana Torrey's Four-nerved Daisy Asteraceae Sunflower Yellow Semi-desert, foothills
Woodlands, openings, rim-rock
Spring
Thalictrum alpinum Alpine Meadowrue Ranunculaceae Buttercup Yellow Montane, subalpine
Bogs, tundra
Spring, summer
Thalictrum fendleri
var.
fendleri
Meadowrue Ranunculaceae Buttercup Yellow Foothills, montane, subalpine
Woodland, meadows
Spring
Thelypodiopsis aurea Durango Tumble Mustard Brassicaceae Mustard Yellow Semi-desert
Openings
Spring
Thelypodium integrifolium Entire-leaf Thelypody Brassicaceae Mustard White  Semi-desert, foothills
Shrublands, openings
Summer, fall
Thelypodium laxiflorum Loose-flowered Thelypody Brassicaceae Mustard Blue Foothills
Shrublands, openings
Summer, fall
Thermopsis montana
var.
montana
Mountain Golden Banner Fabaceae Pea Yellow Montane, subalpine
Woodlands, meadows
Summer
Thermopsis rhombifolia Golden Banner Fabaceae Pea Yellow Semi-desert, prairies
Meadows, openings
Spring
Tiquilia latior Crinklemat Boraginaceae  Forget-Me-Not Pink Semi-desert
Openings
Summer
Tithymalus brachycera Shorthorn Spurge Euphorbiaceae Spurge Yellow Semi-desert to lower montane
Openings, woodlands
Spring
Tonestus pygmaeus Pygmy Serpentweed Asteraceae Sunflower Yellow Alpine
Tundra
Summer
Townsendia annua Annual Townsendia Asteraceae Sunflower White Semi-desert
Shrublands, openings
Spring
Townsendia glabella Oyster Bed Townsendia Asteraceae Sunflower White Foothills
Woodlands, openings
Spring
Townsendia incana Easter Daisy Asteraceae Sunflower White Semi-desert, foothills
Woodlands, openings
Spring
Townsendia leptotes Delicate Townsendia Asteraceae Sunflower White Montane to alpine
Rocky ridges, openings
Summer
Townsendia rothrockii Rothrock's Townsendia Asteraceae Sunflower Pink Montane to alpine
Rocky ridges, openings
Summer
Toxicodendron rydbergii Poison Ivy Anacardiaceae Sumac White Semi-desert, foothills, montane
Seeps, streamsides
Spring
Toxicoscordion venenosum
var.
gramineum
Foothills Death Camas Melanthiaceae False
Hellebore
White Foothills, montane
Woodlands, openings
Spring
Tradescantia occidentalis Spiderwort Commelinaceae Spiderwort Blue Semi-desert, foothills
Forest and grassland openings
Summer, fall
Tragopogon dubius Common Salsify Asteraceae Sunflower Yellow Foothills, montane
Meadows
Spring, summer,
fall
Measow Salsify Asteraceae Sunflower Yellow Foothills, montane
Meadows
Spring, summer,
fall
Tragopogon pratensis Salsify Asteraceae Sunflower Yellow Foothills, montane
Meadows
Spring, summer,
fall
Trautvetteria caroliniensis
var.
occidentalis
Tasselrue Ranunculaceae Buttercup White Montane
Streamsides
Summer
Tribulus terrestris Puncture Vine Zygophyllaceae Caltrop Yellow Semi-desert Openings Summer, fall
Trifolium attenuatum Rocky Mountain Trifolium Fabaceae Pea Red Subalpine, alpine
Openings
Summer
Trifolium brandegeei Brandegee's Trifolium Fabaceae Pea Red Subalpine, alpine
Openings
Summer
Trifolium dasyphyllum Shaggy Leaf Trifolium Fabaceae Pea Red Subalpine, alpine
Openings
Summer
Trifolium gymnocarpon
ssp. gymnocarpon
Holly Leaf Clover Fabaceae Pea White Foothills, montane
Woodlands, openings
Spring
Trifolium longipes Long-stalked Trifolium Fabaceae Pea Red Foothills, montane
Meadows
Summer
Trifolium nanum Dwarf Trifolium Fabaceae Pea Red Alpine
Tundra
Summer
Trifolium parryi
ssp.
parryi
Parry's Trifolium Fabaceae Pea Red Subalpine, alpine
Openings
Summer
Trifolium pratense Red Clover Fabaceae Pea Red Foothills, montane, subalpine
Meadows
Spring
Trifolium repens White Clover Fabaceae Pea White Foothills, montane, subalpine
Meadows
Spring, summer
Triglochin maritima Arrowgrass  Juncaginaceae Arrowgrass Green Foothills, montane
Wetlands
Summer
Trimorpha lonchophylla   Asteraceae Sunflower White Montane, subalpine
Moist, rocky, meadows
Summer
Triteleia grandiflora Wild Hyacinth Themidaceae
formerly
Liliaceae
Brodiaea
formerly
Lily
Blue Foothills
Woodlands, openings
Spring, summer
Trollius albiflorus Globe Flower Ranunculaceae Buttercup White Subalpine
Wetlands, openings, meadows
Spring, summer
Trollius laxus
ssp.
albiflorus
Globe Flower Ranunculaceae Buttercup White Subalpine
Wetlands, openings, meadows
Spring, summer
Tryphane rubella Red Sandwort Caryophyllaceae Pink White Subalpine, alpine
Scree, tundra
Summer
Typha latifolia Cattail Typhaceae Cattail Brown Foothills, montane, subalpine
Wetlands
Spring
Ulmus pumila Siberian Elm Ulmaceae Elm Tree Foothills
Roadsides, fields, lawns 
Spring
Urtica dioica ssp. gracilis Stinging Nettle Urticaceae Nettle White Foothills, montane
Streamsides, wetlands, woodlands
Spring
Urtica gracilis Stinging Nettle Urticaceae Nettle White Foothills, montane
Streamsides, wetlands, woodlands
Spring
Utricularia macrorhiza Greater Bladderwort Lentibulariaceae Bladderwort Yellow Montane, subalpine
Ponds
Summer
Utricularia minor Lesser Bladderwort Lentibulariaceae Bladderwort Yellow Montane, subalpine
Ponds
Summer
Vaccinium myrtillus Blueberry Ericaceae Heath White Subalpine
Woodlands
Spring
Valeriana acutiloba
var.
acutiloba
Valerian Valerianaceae Valerian White Montane, subalpine
Meadows, openings
Summer
Valeriana capitata Valerian Valerianaceae Valerian White Montane, subalpine
Meadows, openings
Summer
Valeriana edulis var. edulis Edible Valerian Valerianaceae Valerian White Montane, subalpine
Meadows, openings
Summer
Veratrum californicum
var.
californicum
Corn Lily Melanthiaceae False Hellebore White Montane, subalpine
Meadows, wetlands
Summer
Veratrum tenuipetalum Corn Lily Melanthiaceae False Hellebore White Montane, subalpine
Meadows, wetlands
Summer
Verbascum thapsus Mullein Scrophulariaceae Snapdragon Yellow Foothills, montane
Disturbed areas, openings
Spring, summer
Verbesina encelioides
var. exauriculata
Crownbeard Asteraceae Sunflower Yellow Foothills
Fields, disturbed areas
Summer, fall
Veronica americana American Brookline Plantaginaceae
formerly
Scrophulariaceae
Plantain
formerly
Snapdragon
Blue Foothills, montane
Streamsides, bogs
Summer
Veronica anagallis-aquatica Veronica Plantaginaceae
formerly
Scrophulariaceae
Plantain
formerly
Snapdragon
Blue Foothills, montane
Streamsides, bogs
Summer
Veronica catenata Veronica Plantaginaceae
formerly
Scrophulariaceae
Plantain
formerly
Snapdragon
Blue Foothills, montane
Streamsides, bogs
Summer
Veronica nutans Veronica Plantaginaceae
formerly
Scrophulariaceae
Plantain
formerly
Snapdragon
Blue Montane, subalpine
Streamsides, meadows
Summer
Veronica serpyllifolia
ssp.
humifusa
Thyme-leaf Speedwell Plantaginaceae
formerly
Scrophulariaceae
Plantain
formerly
Snapdragon
Blue Montane, subalpine
Streamsides, wet meadows
Summer
Veronica wormskjoldii
var.
wormskjoldii
Veronica Plantaginaceae
formerly
Scrophulariaceae
Plantain
formerly
Snapdragon
Blue Montane, subalpine
Streamsides, meadows
Summer
Veronicastrum serpyllifolium Thyme-leaf Speedwell Plantaginaceae
formerly
Scrophulariaceae
Plantain
formerly
Snapdragon
Blue Montane, subalpine
Streamsides, wet meadows
Summer
Spring Biscuitroot
Apiaceae Parsley Red Semi-desert Shrublands, woodlands, openings. Spring
Wide-winged Biscuitroot a
Apiaceae Parsley Red Semi-desert Shrublands, woodlands, openings. Spring
Vicia americana American Vetch Fabaceae Pea Red Foothills, montane, subalpine
Woodlands, meadows
Summer
Viola adunca var. adunca Blue Violet Violaceae Violet Blue Montane, subalpine
Woodlands, meadows
Spring
Viola adunca var.
bellidifolia
Blue Violet Violaceae Violet Blue Alpine
Meadows, tundra
Summer
Viola canadensis
var.
scopulorum
White Violet Violaceae Violet White Foothills, montane
Woodlands
Spring
Viola nephrophylla Bog Violet Violaceae Violet Blue Montane
Wetlands
Spring. summer
Viola nuttallii Yellow Violet Violaceae Violet Yellow Semi-desert, foothills
Openings, shrublands, woodlands
Spring, summer
Viola scopulorum White Violet Violaceae Violet White Foothills, montane
Woodlands
Spring
Viola sororia Bog Violet Violaceae Violet Blue Montane
Wetlands
Spring. summer
Viola vallicola Yellow Violet Violaceae Violet Yellow Semi-desert, foothills
Openings, shrublands, woodlands
Spring, summer
Virgulus falcatus Sickle Aster Asteraceae Sunflower White Foothills, montane
Woodland openings, fields, roadsides
Summer, fall
Wyethia arizonica Arizona Mule's Ears Asteraceae Sunflower Yellow Montane
Meadows
Spring, summer
Wyethia x magna Mule's Ears Asteraceae Sunflower Yellow Montane
Meadows
Spring, summer
Colorado Tansy Aster Asteraceae Sunflower Pink Montane, subalpine, alpine Meadows, openings, rocks, tundra Summer
Saw-toothed Goldenweed Asteraceae Sunflower Yellow Semi-desert Openings, rimrock Spring
Woolly Goldenweed Asteraceae Sunflower Yellow Semi-desert Openings, hillsides Spring
Ximenesia encelioides Crownbeard Asteraceae Sunflower Yellow Foothills
Fields, disturbed areas
Summer, fall
Yucca angustissima
var. angustissima
Narrow Leaf Yucca Agavaceae Agave White Semi-desert, foothills
Woodlands, canyons, openings
Spring
Yucca baccata var. baccata Broad Leaf Yucca Agavaceae Agave White Semi-desert, foothills
Woodlands, canyons, openings
Spring, summer
Yucca baileyi var. baileyi Bailey's Narrow Leaf Yucca Agavaceae Agave White Foothills

Woodlands,
openings

Summer
Yucca harrimaniae
var. harrimaniae
Harriman's Narrow Leaf Yucca Agavaceae Agave White Semi-desert, foothills
Woodlands, canyons, openings
Spring
Zuckia brandegeei Siltbush Amaranthaceae
formerly
Chenopodiaceae 
Amaranth
formerly
Goosefoot
Green Semi-desert
Woodlands, openings
Spring

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