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Families: 81
Genera: 365
Species: 672 (species rank)
Total Taxa: 691 (including subsp. and var.)

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Gutierrezia arizonica
Arizona Snakeweed
[ASTERACEAE]
Gutierrezia microcephala
Small-Head Snakeweed
Hedosyne ambrosiifolia
Ragged Marsh-Elder
Helianthus annuus
Common Sunflower
Helianthus petiolaris
Prairie Sunflower
Heliomeris longifolia var. annua
longleaf false goldeneye
Hemizonia kelloggii
Kellogg's Moonshine-Daisy
Hymenothrix wislizeni
Trans-Pecos Thimblehead
Isocoma tenuisecta
Shrine Jimmyweed
Iva ambrosiaefolia
Ragged Marsh-Elder
Koanophyllon palmeri
Palmer's Umbrella-Thoroughwort
Koanophyllon solidaginifolium
Shrubby Umbrella-Thoroughwort
Lactuca serriola
Prickly Lettuce
Laennecia coulteri
Coulter's Woolwort
Lasthenia californica
California Goldfields
Layia glandulosa
White Tidytips
Logfia californica
California cottonrose
Machaeranthera asteroides
Autumn False Tansy-Aster
Machaeranthera pinnatifida
Lacy Sleepy Daisy
Machaeranthera tagetina
Mesa Tansy-Aster
Malacothrix clevelandii
Cleveland's Desert-Dandelion
Malacothrix coulteri
Snake's-Head
Malacothrix fendleri
Fendler's Desert-Dandelion
Malacothrix glabrata
Smooth Desert-Dandelion
Malacothrix stebbinsii
Stebbins' Desert-Dandelion
Matricaria discoidea
Pineapple-Weed
Monoptilon bellioides
Mojave Desertstar
Pectis cylindrica
Sonoran Chinchweed
Pectis filipes
Five-Bract Chinchweed
Pectis linifolia
Romero-Macho
Pectis papposa
Many-Bristle Chinchweed
Perityle emoryi
Emory's Rockdaisy
Perityle lemmonii
Lemmon's Rockdaisy
Porophyllum gracile
Slender Poreleaf
Pseudognaphalium canescens
Wright's Rabbit-Tobacco
Pseudognaphalium leucocephalum
White Rabbit-Tobacco
Psilostrophe cooperi
White-Stem Paper-Flower
Rafinesquia californica
California Plumeseed
Rafinesquia neomexicana
New Mexico Plumeseed
Sanvitalia abertii
Albert's Creeping-Zinnia
Senecio lemmonii
Lemmon's Ragwort
Sonchus asper
Spiny-Leaf Sow-Thistle
Sonchus oleraceus
common sowthistle
Stephanomeria pauciflora
Brown-Plume Wire-Lettuce
Stylocline gnaphaloides
Mountain Neststraw
Stylocline micropoides
Woolly-Head Neststraw
Stylocline sonorensis
Sonoran Neststraw
Symphyotrichum divaricatum
Lawn American-Aster
Thymophylla acerosa
American Pricklyleaf
Thymophylla concinna
Sonoran Pricklyleaf
Thymophylla pentachaeta
Five-Needle Pricklyleaf
Trixis californica
American Threefold
Uropappus lindleyi
Lindley's False Silverpuffs
Xanthisma gracile
Grass-Leaf Sleepy Daisy
Xanthisma spinulosum
Lacy Sleepy Daisy
Xanthium strumarium
Rough Cockleburr
Zinnia acerosa
White Zinnia
Chilopsis linearis
Desert-Willow
[BIGNONIACEAE]
Tecoma stans
Yellow Trumpetbush
Amsinckia intermedia
Common Fiddleneck
[BORAGINACEAE]
Amsinckia tessellata
Devil's-Lettuce
Cryptantha angustifolia
Panamint Narrow-Wing Cat's-Eye
Cryptantha barbigera
Bearded Cat's-Eye
Cryptantha decipiens
Gravel-Bar Cat's-Eye
Cryptantha maritima
Guadalupe Cat's-Eye
Cryptantha micrantha
Greater Alley Cat's-Eye
Cryptantha nevadensis
Nevada Cat's-Eye
Cryptantha pterocarya
Wing-Nut Cat's-Eye
Eucrypta chrysanthemifolia
Spotted Hideseed
Eucrypta micrantha
Dainty Desert Hideseed
Harpagonella arizonica
Arizona grapplinghook
Harpagonella palmeri
Palmer's Grappling-Hook
Lappula occidentalis
Flat-Spine Sheepburr
Nama demissa
Purplemat
Nama demissum
Purplemat
Nama hispidum
Sandbells
Pectocarya heterocarpa
Chuckwalla Combseed
Pectocarya platycarpa
Broad-Fruit Combseed
Pectocarya recurvata
Curve-Nut Combseed
Phacelia affinis
Limestone Scorpion-Weed
Phacelia arizonica
Arizona Scorpion-Weed
Phacelia bombycina
Mangas Spring Scorpion-Weed
Phacelia caerulea
Sky-Blue Scorpion-Weed
Phacelia crenulata
Notch-Leaf Scorpion-Weed
Phacelia distans
Distant Scorpion-Weed
Pholistoma auritum
Blue Fiesta-Flower
Plagiobothrys arizonicus
Arizona Popcorn-Flower
Plagiobothrys pringlei
Pringle's Popcorn-Flower
Tiquilia canescens
Woody Crinklemat
Arabis perennans
Perennial Rockcress
[BRASSICACEAE]
Boechera perennans
Perennial Rockcress
Brassica nigra
Black Mustard