Authors: Melissa Islam
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Families: 67
Genera: 267
Species: 412 (species rank)
Total Taxa: 414 (including subsp. and var.)

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Alisma gramineum
narrowleaf water plantain
[ALISMATACEAE]
Alisma triviale
Northern Water-Plantain
Sagittaria cuneata
Arum-Leaf Arrowhead
Amaranthus blitoides
Mat Amaranth
[AMARANTHACEAE]
Amaranthus palmeri
Careless Weed
Amaranthus powellii
Green Amaranth
Atriplex canescens
Four-Wing Saltbush
Chenopodiastrum simplex
Giant-Seed Mock Goosefoot
Chenopodium album
Lamb's-Quarters
Chenopodium leptophyllum
Narrow-Leaf Goosefoot
Dysphania botrys
Jerusalem-Oak
Kochia scoparia
Mexican-Fireweed
Salsola tragus
Prickly Russian-Thistle
Allium textile
White Wild Onion
[AMARYLLIDACEAE]
Rhus trilobata var. trilobata
skunkbush sumac
[ANACARDIACEAE]
Toxicodendron rydbergii
Western Poison Ivy
Berula erecta
Cut-Leaf-Water-Parsnip
[APIACEAE]
Cicuta douglasii
Western Water-Hemlock
Conium maculatum
Poison-Hemlock
Daucus carota
Queen Anne's-Lace
Lomatium dissectum
Chocolate-Tips
Lomatium orientale
Oriental Desert-Parsley
Musineon divaricatum
Leafy Wild Parsley
Apocynum cannabinum
Indian-Hemp
[APOCYNACEAE]
Asclepias incarnata
Swamp Milkweed
Asclepias pumila
Low Milkweed
Asclepias speciosa
Showy Milkweed
Lemna minor
Common Duckweed
[ARACEAE]
Asparagus officinalis
Asparagus
[ASPARAGACEAE]
Maianthemum stellatum
Starry False Solomon's-Seal
Yucca glauca
Soapweed Yucca
Achillea millefolium
Woolly Yarrow
[ASTERACEAE]
Ambrosia artemisiifolia
Annual Ragweed
Ambrosia psilostachya
Perennial Ragweed
Ambrosia tomentosa
Skeleton-Leaf Burr-Ragweed
Ambrosia trifida
Great Ragweed
Antennaria rosea
Rosy Pussytoes
Arctium minus
Lesser Burrdock
Arnica fulgens
Shining Leopardbane
Artemisia biennis
Biennial Wormwood
Artemisia campestris
Pacific Wormwood
Artemisia dracunculus
Dragon Wormwood
Artemisia frigida
Prairie Sagebrush
Artemisia ludoviciana
White Sagebrush
Bidens frondosa
Devil's-Pitchfork
Carduus nutans
Nodding Plumeless-Thistle
Centaurea diffusa
White Knapweed
Cirsium arvense
Canadian Thistle
Conyza canadensis
Canadian Horseweed
Crepis occidentalis
Large-Flower Hawk's-Beard
Dieteria bigelovii
Bigelow's False Tansy-Aster
Dieteria canescens
Hoar False Tansy-Aster
Dyssodia papposa
Fetid-Marigold
Ericameria nauseosa
Rubber-Rabbitbrush
Erigeron divergens
Rough Fleabane
Erigeron speciosus
aspen fleabane
Gnaphalium uliginosum
Marsh Cudweed
Grindelia hirsutula
Hairy Gumweed
Grindelia squarrosa
Curly-Cup Gumweed
Helianthus annuus
Common Sunflower
Helianthus nuttallii
Nuttall's Sunflower
Helianthus petiolaris
Prairie Sunflower
Helianthus pumilus
Little Sunflower
Heliomeris multiflora
Nevada Showy False Goldeneye
Heterotheca villosa
Hairy False Golden-Aster
Iva axillaris
Deer-Root
Lactuca serriola
Prickly Lettuce
Leucanthemum vulgare
Ox-Eye Daisy
Liatris punctata
Dotted Gayfeather
Lygodesmia juncea
Rush Skeleton-Plant
Matricaria discoidea
Pineapple-Weed
Nothocalais cuspidata
Wavy-Leaf Prairie-Dandelion
Onopordum acanthium
Scotch-Thistle
Picradeniopsis oppositifolia
Opposite-Leaf False Bahia
Ratibida columnifera
Red-Spike Mexican-Hat
Rudbeckia hirta
Black-Eyed-Susan
Scorzonera laciniata
Cut-Leaf Viper-Grass
Senecio integerrimus
Lamb-Tongue Ragwort
Senecio spartioides
Broom-Like Ragwort
Solidago gigantea
Late Goldenrod
Solidago missouriensis
Missouri Goldenrod
Solidago mollis
Velvet Goldenrod
Solidago rigida
Hard-Leaf Flat-Top-Goldenrod
Sonchus asper
Spiny-Leaf Sow-Thistle
Symphyotrichum ericoides
White Heath American-Aster
Symphyotrichum falcatum
Rough White Prairie American-Aster
Symphyotrichum laeve
Smooth Blue American-Aster
Symphyotrichum lanceolatum
White Panicled American-Aster
Symphyotrichum porteri
Smooth White American-Aster
Taraxacum officinale
Common Dandelion