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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
threadleaf 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 tarweed
Hymenothrix wislizeni
Trans-Pecos thimblehead
Iva ambrosiaefolia
ragged marsh-elder
Koanophyllon solidaginifolium
shrubby thoroughwort
Lactuca serriola
prickly lettuce
Laennecia coulteri
Coulter's horseweed
Lasthenia californica
California goldfields
Layia glandulosa
whitedaisy tidytips
Logfia californica
California cottonrose
Machaeranthera asteroides
fall tansyaster
Machaeranthera pinnatifida
spiny haplopappus
Machaeranthera tagetina
mesa tansyaster
Malacothrix clevelandii
Cleveland's desertdandelion
Malacothrix coulteri
snake's head
Malacothrix fendleri
Fendler's desertdandelion
Malacothrix glabrata
smooth desertdandelion
Malacothrix stebbinsii
Stebbins' desertdandelion
Matricaria discoidea
disc mayweed
Monoptilon bellioides
Mojave desertstar
Pectis cylindrica
Sonoran cinchweed
Pectis filipes
five-bract cinchweed
Pectis linifolia
romero macho
Pectis papposa
chinchweed
Perityle emoryi
Emory's rockdaisy
Perityle lemmonii
Lemmon's rockdaisy
Porophyllum gracile
slender poreleaf
Prenanthella exigua
brightwhite
Pseudognaphalium canescens
Wright's cudweed
Psilostrophe cooperi
whitestem paperflower
Rafinesquia californica
California chicory
Rafinesquia neomexicana
New Mexico plumeseed
Sanvitalia abertii
Albert's creeping zinnia
Senecio lemmonii
Lemmon's ragwort
Sonchus asper
spiny sowthistle
Sonchus oleraceus
common sowthistle
Stephanomeria pauciflora
brownplume wirelettuce
Stylocline gnaphaloides
everlasting nest straw
Stylocline micropoides
woollyhead neststraw
Stylocline sonorensis
Sonoran neststraw
Symphyotrichum divaricatum
southern annual saltmarsh aster
Thymophylla acerosa
pricklyleaf dogweed
Thymophylla concinna
Sonoran pricklyleaf
Thymophylla pentachaeta
fiveneedle pricklyleaf
Trixis californica
American threefold
Uropappus lindleyi
silver puffs
Xanthisma gracile
slender goldenweed
Xanthisma spinulosum
spiny haplopappus
Xanthium strumarium
rough cocklebur
Zinnia acerosa
desert zinnia
Chilopsis linearis
desert willow
[BIGNONIACEAE]
Tecoma stans
yellow trumpetbush
Amsinckia intermedia
common fiddleneck
[BORAGINACEAE]
Amsinckia tessellata
bristly fiddleneck
Cryptantha angustifolia
Panamint cryptantha
Cryptantha barbigera
bearded cryptantha
Cryptantha decipiens
gravelbar cryptantha
Cryptantha maritima
Guadalupe cryptantha
Cryptantha micrantha
redroot cryptantha
Cryptantha nevadensis
Nevada cryptantha
Cryptantha pterocarya
wingnut cryptantha
Eucrypta chrysanthemifolia
spotted hideseed
Eucrypta micrantha
dainty desert hideseed
Harpagonella arizonica
Arizona grapplinghook
Harpagonella palmeri
Palmer's grapplinghook
Lappula occidentalis
flatspine stickseed
Nama demissa
purplemat
Nama demissum
purplemat
Nama hispidum
bristly nama
Pectocarya heterocarpa
chuckwalla combseed
Pectocarya platycarpa
broadfruit combseed
Pectocarya recurvata
curvenut combseed
Phacelia affinis
limestone phacelia
Phacelia arizonica
Arizona phacelia
Phacelia bombycina
Mangas Spring phacelia
Phacelia caerulea
caterpillar weed
Phacelia campanularia
desert Canterbury bells
Phacelia crenulata
cleftleaf wildheliotrope
Phacelia crenulata var. ambigua
purplestem phacelia
Phacelia distans
distant phacelia
Pholistoma auritum
blue fiestaflower
Plagiobothrys arizonicus
Arizona popcornflower
Plagiobothrys pringlei
Pringle's popcornflower
Tiquilia canescens
woody crinklemat
Arabis perennans
perennial rockcress
[BRASSICACEAE]
Boechera perennans
perennial rockcress
Brassica nigra
black mustard