Denver-Boulder Metropolitan Area
Authors: Denver Botanic Gardens

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Families: 156
Genera: 897
Species: 2937
Total Taxa: 3259

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Acorus calamus - Single-Vein Sweetflag
Alisma gramineum - Narrow-Leaf Water-Plantain
Alisma plantago-aquatica - European Water-Plantain
Alisma triviale - Northern Water-Plantain
Sagittaria brevirostra - Short-Beak Arrowhead
Sagittaria cuneata - Arum-Leaf Arrowhead
Sagittaria montevidensis - Giant Arrowhead
Amaranthus albus - Tumbleweed
Amaranthus arenicola - Sandhill Amaranth
Amaranthus blitoides - Mat Amaranth
Amaranthus hybridus - Smooth Amaranth
Amaranthus palmeri - Careless Weed
Amaranthus powellii - Green Amaranth
Amaranthus torreyi - Torrey's Amaranth
Amaranthus tuberculatus - Rough-Fruit Amaranth
Atriplex argentea - Silverscale
Atriplex canescens - Four-Wing Saltbush
Atriplex dioica - Saline Saltbush
Atriplex heterosperma - Two-Scale Saltbush
Atriplex hortensis - Garden Orache
Atriplex patula - Halberd-Leaf Orache
Atriplex powellii - Powell's Orache
Atriplex rosea - Tumbling Orache
Atriplex saccaria - Stalked Orache
Atriplex subspicata - saline saltbush
Atriplex truncata - Wedge-Leaf Orache
Axyris amaranthoides - Russian-Pigweed
Bassia hyssopifolia - Five-Horn Smotherweed
Bassia scoparia - Mexican-Fireweed
Beta vulgaris - Sea Beet
Blitum capitatum - Strawberry-Blite
Blitum nuttallianum - Nuttall's Poverty-Weed
Blitum virgatum - Leafy Strawberry-Blite
Chenopodiastrum simplex - Giant-Seed Mock Goosefoot
Chenopodium album - Lamb's-Quarters
Chenopodium album var. missouriense - Missouri lambsquarters
Chenopodium atrovirens - Pinyon Goosefoot
Chenopodium berlandieri - Pit-Seed Goosefoot
Chenopodium capitatum - Strawberry-Blite
Chenopodium desiccatum - Arid-Land Goosefoot
Chenopodium fremontii - Fremont's Goosefoot
Chenopodium hians - Hians Goosefoot
Chenopodium incanum - Mealy Goosefoot
Chenopodium leptophyllum - Narrow-Leaf Goosefoot
Chenopodium pratericola - Desert Goosefoot
Chenopodium strictum - Lake-Flowering Goosefoot
Chenopodium subglabrum - Smooth Goosefoot
Chenopodium watsonii - Watson's Goosefoot
Corispermum americanum - American Bugseed
Corispermum villosum - Hairy Bugseed
Dysphania botrys - Jerusalem-Oak
Dysphania pumilio - Clammy Wormseed
Froelichia floridana - Plains Snake-Cotton
Froelichia gracilis - Slender Snake-Cotton
Kali tragus - Russian-Thistle
Oxybasis glauca - Oak-Leaf Eurasian-Goosefoot
Oxybasis glauca var. glauca - Oak-Leaf Eurasian-Goosefoot
Oxybasis glauca var. salina - Rocky Mountain goosefoot
Oxybasis rubra - Red Eurasian-Goosefoot
Salicornia rubra - Boreal Saltwort
Salsola collina - Slender Russian-Thistle
Salsola tragus - Prickly Russian-Thistle
Suaeda nigra - Shrubby Seepweed
Suckleya suckleyana - Poison Suckleya
Allium brevistylum - Short-Stem Onion
Allium cernuum - Nodding Onion
Allium geyeri - Geyer's Onion
Allium sativum - Cultivated Garlic
Allium textile - White Wild Onion
Cotinus coggygria - European Smoketree
Rhus aromatica - Fragrant Sumac
Rhus glabra - Smooth Sumac
Rhus typhina - Stag-Horn Sumac
Toxicodendron pubescens - Eastern Poison-Oak
Toxicodendron rydbergii - Western Poison Ivy
Aegopodium podagraria - Bishop's Goutweed
Aletes acaulis - Stemless Indian-Parsley
Aletes humilis - Colorado Spring-Parsley
Angelica ampla - Giant Angelica
Angelica grayi - Gray's Angelica
Angelica lucida - Seacoast Angelica
Angelica pinnata - Small-Leaf Angelica
Berula erecta - Cut-Leaf-Water-Parsnip
Carum carvi - Caraway
Cicuta douglasii - Western Water-Hemlock
Cicuta maculata - Spotted Water-Hemlock
Cicuta maculata var. angustifolia - spotted water hemlock
Conioselinum scopulorum - Rocky Mountain Hemlock-Parsley
Conium maculatum - Poison-Hemlock
Cymopterus bulbosus - Bulbous Venus-Parsley
Cymopterus glomeratus - Plains Spring-Parsley
Cymopterus montanus - Mountain Venus-Parsley
Daucus carota - Queen Anne's-Lace
Eryngium planum - Plains Eryngo
Harbouria trachypleura - Whiskbroom-Parsley
Heracleum maximum - American Cow-Parsnip
Levisticum officinale - Garden Lovage
Ligusticum apiifolium - Celery-Leaf Wild Lovage
Ligusticum filicinum - Fern-Leaf Wild Lovage
Ligusticum porteri - Porter's Wild Lovage
Ligusticum porteri var. porteri - Porter's licorice-root
Ligusticum tenuifolium - Slender-Leaf Wild Lovage
Lomatium dissectum - Chocolate-Tips
Lomatium macrocarpum - Large-Fruit Desert-Parsley
Lomatium orientale - Oriental Desert-Parsley
Musineon divaricatum - Leafy Wild Parsley
Musineon tenuifolium - Slender Wild Parsley
Neoparrya lithophila - False Indian-Parsley
Oreoxis alpina - Tundra Alpine-Parsley
Oreoxis bakeri - Baker's Alpine-Parsley
Osmorhiza berteroi - Mountain Sweet-Cicely
Osmorhiza depauperata - Blunt-Fruit Sweet-Cicely
Oxypolis fendleri - Fendler's Cowbane
Pastinaca sativa - Wild Parsnip
Pseudocymopterus montanus - Alpine Spring-Parsley
Pteryxia hendersonii - Long-Lobe Spring-Parsley
Sanicula marilandica - Maryland Black-Snakeroot
Sium suave - Hemlock Water-Parsnip
Thaspium trifoliatum - Meadow-Parsnip
Zizia aptera - Heart-Leaf Alexanders
Apocynum androsaemifolium - Spreading Dogbane
Apocynum × floribundum - Hybrid Dogbane
Asclepias asperula - Spider Antelope-Horns
Asclepias cryptoceras - Humboldt Mountain Milkweed
Asclepias engelmanniana - Engelmann's Milkweed
Asclepias hallii - Hall's Milkweed
Asclepias incarnata - Swamp Milkweed
Asclepias latifolia - Broad-Leaf Milkweed
Asclepias pumila - Low Milkweed
Asclepias speciosa - Showy Milkweed
Asclepias stenophylla - Slim-Leaf Milkweed
Asclepias subverticillata - Horsetail Milkweed
Asclepias tuberosa - Butterfly Milkweed
Asclepias viridiflora - Green Comet Milkweed
Vinca major - Greater Periwinkle
Vinca minor - Lesser Periwinkle
Ilex aquifolium - English Holly
Lemna gibba - Inflated Duckweed
Lemna minor - Common Duckweed
Lemna minuta - Least Duckweed
Lemna turionifera - Turion Duckweed
Wolffia columbiana - Columbian Watermeal
Aralia nudicaulis - Wild Sarsaparilla
Hedera helix - English Ivy
Convallaria majalis - European Lily-of-the-Valley
Maianthemum racemosum - Feathery False Solomon's-Seal
Maianthemum racemosum subsp. amplexicaule - feathery false lily of the vally
Maianthemum stellatum - Starry False Solomon's-Seal
Muscari botryoides - Common Grape-Hyacinth
Scilla siberica - Siberian Squill
Yucca glauca - Soapweed Yucca
Yucca gloriosa - Moundlily Yucca
Asplenium adiantum-nigrum - Black Spleenwort
Asplenium septentrionale - Forked Spleenwort
Asplenium trichomanes - Maidenhair Spleenwort
Achillea filipendulina - Fern-Leaf Yarrow
Achillea millefolium - common yarrow
Acroptilon repens - Russian knapweed
Agoseris aurantiaca - Orange-Flower Goat-Chicory
Agoseris glauca - Pale Goat-Chicory
Agoseris grandiflora - Large-Flower Goat-Chicory
Agoseris parviflora - Small-Flower Goat-Chicory
Amauriopsis dissecta - Sunray Daisy
Ambrosia acanthicarpa - Flat-Spine Burr-Ragweed
Ambrosia artemisiifolia - Annual Ragweed
Ambrosia confertiflora - Weak-Leaf Burr-Ragweed
Ambrosia grayi - Woolly-Leaf Burr-Ragweed
Ambrosia linearis - Streaked Burr-Ragweed
Ambrosia psilostachya - Perennial Ragweed
Ambrosia tomentosa - Skeleton-Leaf Burr-Ragweed
Ambrosia trifida - Great Ragweed
Anaphalis margaritacea - Pearly-Everlasting
Antennaria alpina - Pale Pussytoes
Antennaria anaphaloides - Tall Pussytoes
Antennaria corymbosa - Flat-Top Pussytoes
Antennaria dioica - Stoloniferous Pussytoes
Antennaria howellii - Small Pussytoes
Antennaria marginata - White-Margin Pussytoes
Antennaria media - Rocky Mountain Pussytoes
Antennaria microphylla - Small-Leaf Pussytoes
Antennaria neglecta - Field Pussytoes
Antennaria parvifolia - Little-Leaf Pussytoes
Antennaria pulcherrima - Showy Pussytoes
Antennaria rosea - Rosy Pussytoes
Antennaria rosulata - Kaibab Pussytoes
Antennaria umbrinella - Brown-Bract Pussytoes
Anthemis cotula - Stinking Chamomile
Arctium minus - Lesser Burrdock
Arctium tomentosum - Woolly Burrdock
Arnica angustifolia - Narrow-Leaf Leopardbane
Arnica chamissonis - Leafy Leopardbane
Arnica cordifolia - Heart-Leaf Leopardbane
Arnica fulgens - Shining Leopardbane
Arnica latifolia - Daffodil Leopardbane
Arnica mollis - Cordilleran Leopardbane
Arnica parryi - Nodding Leopardbane
Arnica rydbergii - Subalpine Leopardbane
Arnica sororia - Twin Leopardbane
Artemisia abrotanum - Southern Wormwood
Artemisia annua - Annual Wormwood
Artemisia biennis - Biennial Wormwood
Artemisia borealis - Boreal Wormwood
Artemisia campestris - Pacific Wormwood
Artemisia cana - Coaltown Sagebrush
Artemisia carruthii - Carruth's Sagebrush
Artemisia filifolia - Silver Sagebrush
Artemisia frigida - Prairie Sagebrush
Artemisia laciniata - Siberian Wormwood
Artemisia longifolia - Long-Leaf Wormwood
Artemisia ludoviciana - White Sagebrush
Artemisia norvegica - Boreal Sagebrush
Artemisia scopulorum - Alpine Sagebrush
Artemisia tridentata - Big Sagebrush
Artemisia tripartita - Three-Tip Sagebrush
Aster alpinus - Alpine Aster
Baccharis havardii - Havard's False Willow
Balsamorhiza sagittata - Arrow-Leaf Balsamroot
Bellis perennis - Lawndaisy
Bidens bigelovii - Bigelow's Beggarticks
Bidens cernua - Nodding Burr-Marigold
Bidens frondosa - Devil's-Pitchfork
Bidens laevis - Smooth Beggarticks
Bidens tenuisecta - Slim-Lobe Beggarticks
Bidens tripartita - Three-Lobe Beggarticks
Bidens vulgata - Tall Beggarticks
Brickellia californica - California Brickellbush
Brickellia grandiflora - Tassel-Flower Brickellbush
Brickellia oblongifolia - Narrow-Leaf Brickellbush
Carduus acanthoides - Spiny Plumeless-Thistle
Carduus nutans - Nodding Plumeless-Thistle
Carthamus lanatus - Woolly Distaff-Thistle
Castalis tragus - African daisy
Centaurea cyanus - Garden Cornflower
Centaurea diffusa - White Knapweed
Centaurea solstitialis - Yellow Star-Thistle
Centaurea stoebe - Spotted Knapweed
Chaenactis douglasii - Dusty-Maiden
Chrysothamnus greenei - Greene's Rabbitbrush
Chrysothamnus viscidiflorus - Green Rabbitbrush
Cirsium arvense - Canadian Thistle
Cirsium canescens - Prairie Thistle
Cirsium clavatum - Fish Lake Thistle
Cirsium drummondii - Dwarf Thistle
Cirsium eatonii - Eaton's Thistle
Cirsium flodmanii - Flodman's Thistle
Cirsium hookerianum - White Thistle
Cirsium ochrocentrum - Yellow-Spine Thistle
Cirsium parryi - Parry's Thistle
Cirsium scariosum - Meadow Thistle
Cirsium scopulorum - Alpine Thistle
Cirsium tioganum - stemless thistle
Cirsium tracyi - Tracy's Thistle
Cirsium undulatum - Wavy-Leaf Thistle
Cirsium vulgare - Bull Thistle
Conyza canadensis - Canadian Horseweed
Coreopsis lanceolata - Lance-Leaf Tickseed
Coreopsis tinctoria - Golden Tickseed
Cosmos bipinnatus - Garden Cosmos
Cota tinctoria - Golden-Chamomile
Crepis atribarba - Slender Hawk's-Beard
Crepis capillaris - Smooth Hawk's-Beard
Crepis occidentalis - Large-Flower Hawk's-Beard
Crepis occidentalis subsp. costata - largeflower hawksbeard
Crepis runcinata - Fiddle-Leaf Hawk's-Beard
Crepis runcinata subsp. glauca - fiddleleaf hawksbeard
Crepis tectorum - Narrow-Leaf Hawk's-Beard
Diaperia prolifera - Big-Head Pygmy-Cudweed
Dieteria asteroides - Autumn False Tansy-Aster
Dieteria bigelovii - Bigelow's False Tansy-Aster
Dieteria canescens - Hoar False Tansy-Aster
Dyssodia papposa - Fetid-Marigold
Echinacea purpurea - Eastern Purple-Coneflower
Echinops sphaerocephalus - Great Globe-Thistle
Ericameria discoidea - White-Stem Heath-Goldenrod
Ericameria nauseosa - Rubber-Rabbitbrush
Ericameria parryi - Parry's Rubber-Rabbitbrush
Erigeron acris - Bitter Fleabane
Erigeron annuus - Eastern Daisy Fleabane
Erigeron bellidiastrum - Western Daisy Fleabane
Erigeron caespitosus - Tufted Fleabane
Erigeron canus - Hoary Fleabane
Erigeron compositus - Dwarf Mountain Fleabane
Erigeron concinnus - Navajo Fleabane
Erigeron coulteri - Large Mountain Fleabane
Erigeron divergens - Spreading Fleabane
Erigeron eatonii - Eaton's Fleabane
Erigeron elatior - Tall Fleabane
Erigeron eximius - Spruce-Fir Fleabane
Erigeron flagellaris - Trailing Fleabane
Erigeron formosissimus - Beautiful Fleabane
Erigeron glabellus - Streamside Fleabane
Erigeron glacialis - Glacier Fleabane
Erigeron grandiflorus - Large-Flower Fleabane
Erigeron leiomerus - Rockslide Fleabane
Erigeron lonchophyllus - Short-Ray Fleabane
Erigeron mancus - Depauperate Fleabane
Erigeron melanocephalus - Black-Head Fleabane
Erigeron nanus - Dwarf Fleabane
Erigeron nivalis - Scotter's Fleabane
Erigeron peregrinus - Subalpine Fleabane
Erigeron pinnatisectus - Feather-Leaf Fleabane
Erigeron pumilus - Shaggy Fleabane
Erigeron simplex - onestem fleabane
Erigeron speciosus - aspen fleabane
Erigeron strigosus - Prairie Fleabane
Erigeron subtrinervis - Three-Nerve Fleabane
Erigeron tracyi - Running Fleabane
Erigeron uniflorus - One-Flower Fleabane
Erigeron ursinus - Bear River Fleabane
Erigeron vagus - Rambling Fleabane
Erigeron vetensis - Early Blue-Top Fleabane
Erigeron vreelandii - Broad-Leaf Fleabane
Eucephalus engelmannii - Engelmann's Wayside-Aster
Euthamia graminifolia - Flat-Top Goldentop
Euthamia occidentalis - Western Goldentop
Eutrochium maculatum - Spotted Trumpetweed
Eutrochium maculatum var. bruneri - Western Spotted Gravel Root
Flaveria campestris - Alkali Yellowtops
Gaillardia aristata - Great Blanket-Flower
Galinsoga parviflora - Gallant-Soldier
Galinsoga quadriradiata - Shaggy-Soldier
Gnaphalium exilifolium - Slender Cudweed
Gnaphalium palustre - Western Marsh Cudweed
Gnaphalium uliginosum - Marsh Cudweed
Grindelia fastigiata - Pointed Gumweed
Grindelia hirsutula - Hairy Gumweed
Grindelia nuda - curlytop gumweed
Grindelia squarrosa - Curly-Cup Gumweed
Grindelia subalpina - Subalpine Gumweed
Gutierrezia microcephala - Small-Head Snakeweed
Helenium autumnale - Autumn Sneezeweed
Helianthella parryi - Parry's Dwarf-Sunflower
Helianthella quinquenervis - Nodding Dwarf-Sunflower
Helianthella uniflora - Rocky Mountain Dwarf-Sunflower
Helianthus annuus - Common Sunflower
Helianthus ciliaris - Texas-Blueweed
Helianthus maximiliani - Maximilian Sunflower
Helianthus nuttallii - Nuttall's Sunflower
Helianthus pauciflorus - Stiff Sunflower
Helianthus petiolaris - Prairie Sunflower
Helianthus pumilus - Little Sunflower
Helianthus rigidus - Stiff Sunflower
Helianthus × laetiflorus - Hybrid Sunflower
Heliomeris multiflora - Nevada Showy False Goldeneye
Herrickia glauca - gray aster
Heterotheca canescens - Hoary False Golden-Aster
Heterotheca fulcrata - Rocky-Scree False Golden-Aster
Heterotheca fulcrata var. amplifolia - rockyscree false goldenaster
Heterotheca fulcrata var. fulcrata - rockyscree false goldenaster
Heterotheca pumila - Alpine False Golden-Aster
Heterotheca villosa - Hairy False Golden-Aster
Heterotheca villosa var. minor - hairy false goldenaster
Heterotheca villosa var. nana - hairy false goldenaster
Heterotheca villosa var. villosa - Hairy False Goldenaster
Hieracium albiflorum - White-Flower Hawkweed
Hieracium aurantiacum - Orange Hawkweed
Hieracium caespitosum - Gronovis Hawkweed
Hieracium fendleri - Yellow Hawkweed
Hieracium triste - Woolly Hawkweed
Hymenopappus filifolius - Fine-Leaf Woollywhite
Hymenopappus newberryi - Newberry's Woollywhite
Hymenopappus tenuifolius - Chalkhill Woollywhite
Hymenothrix dissecta - Sunray Daisy
Hymenoxys grandiflora - Old-Man-of-the-Mountain
Hymenoxys helenioides - Intermountain Rubberweed
Hymenoxys hoopesii - Owl's-Claws
Hymenoxys odorata - Poison Rubberweed
Hymenoxys richardsonii - Colorado Rubberweed