Authors: Wendy C. Hodgson, Andrew Salywon, Raul Puente

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Families: 106
Genera: 516
Species: 1110
Total Taxa (details): 1150

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Artemisia nova
Black Sagebrush
Asclepias asperula
Spider Antelope-Horns
Asclepias glaucescens
Nodding Milkweed
Asclepias nyctaginifolia
Mojave Milkweed
Aspicarpa hirtella
Chaparral Asphead
Astragalus sp.
milkvetch
Astragalus allochrous
Halfmoon Milk-Vetch
Astragalus arizonicus
Arizona Milk-Vetch
Astragalus castaneiformis
Chestnut Milk-Vetch
Astragalus didymocarpus
Dwarf White Milk-Vetch
Astragalus humistratus
Ground-Cover Milk-Vetch
Astragalus lentiginosus
Freckled Milk-Vetch
Astragalus miser
Timber Milk-Vetch
Astragalus nothoxys
Sheep Milk-Vetch
Astragalus subcinereus
Silver's Milk-Vetch
Astragalus tephrodes
Ashen Milk-Vetch
Astrolepis cochisensis
Cochise Scaly Cloak Fern
Astrolepis sinuata
Wavy Scaly Cloak Fern
Atriplex canescens
Four-Wing Saltbush
Atriplex canescens var. linearis
thinleaf fourwing saltbush
Avena fatua
Wild Oat
Ayenia filiformis
Trans-Pecos Ayenia
Ayenia insulicola
Dwarf Ayenia
Baccharis neglecta
Roosevelt-Weed
Baccharis pteronioides
Yerba-de-Pasmo
Baccharis salicifolia
Douglas' False Willow
Baccharis sergiloides
Squaw's False Willow
Baccharis thesioides
Arizona False Willow
Bahia absinthifolia
Hairy-Seed False Goldfields
Bahia biternata
slimlobe bahia
Bahia dissecta
Sunray Daisy
Baileya multiradiata
Showy Desert-Marigold
Bebbia juncea
Sweetbush
Berberis haematocarpa
Red Oregon-Grape
Berberis repens
Creeping Oregon-Grape
Bidens aurea
tickseed
Bidens bigelovii
Bigelow's Beggarticks
Bidens leptocephala
Few-Flower Beggarticks
Boechera perennans
Perennial Rockcress
Boechera stricta
Canadian Rockcress
Boerhavia coccinea
Scarlet Spiderling
Boerhavia coulteri
Coulter's Spiderling
Boerhavia erecta
Erect Spiderling
Boerhavia wrightii
Large-Bract Spiderling
Bommeria hispida
Copper Fern
Bothriochloa barbinodis
Cane Beard Grass
Bouteloua barbata
Six-Weeks Grama
Bouteloua chondrosioides
Spruce-Top Grama
Bouteloua curtipendula
Side-Oats Grama
Bouteloua eriopoda
Black Grama
Bouteloua hirsuta
Hairy Grama
Bouteloua radicosa
Purple Grama
Bouteloua repens
Slender Grama
Bouteloua rothrockii
Rothrock's grama
Bouvardia ternifolia
Firecracker-Bush
Bowlesia incana
Hoary Bowlesia
Image
not yet
available
Brassica tournefortii
Asian Mustard
Brickellia amplexicaulis
Ear-Leaf Brickellbush
Brickellia betonicifolia
Betony-Leaf Brickellbush
Brickellia californica
California Brickellbush
Brickellia coulteri
Coulter's Brickellbush
Brickellia eupatorioides
False Boneset
Brickellia grandiflora
Tassel-Flower Brickellbush
Brickellia microphylla
Little-Leaf Brickellbush
Brickellia simplex
Sonoran Brickellbush
Brickellia venosa
Veiny Brickellbush
Bromus anomalus
Nodding Brome
Bromus arizonicus
Arizona Brome
Bromus carinatus
California Brome
Bromus ciliatus
Fringed Brome
Bromus frondosus
Weeping Brome
Bromus inermis
Smooth Brome
Bromus japonicus
Japanese Brome
Bromus rubens
Red Brome
Image
not yet
available
Bulbostylis capillaris
Dense-Tuft Hair Sedge
Calamagrostis scopulorum
ditch reedgrass
Calandrinia ciliata
fringed redmaids
Calibrachoa parviflora
Seaside-Petunia
Calliandra humilis
Dwarf Stick-Pea
Calochortus ambiguus
Doubting Mariposa-Lily
Calochortus kennedyi
Red Mariposa-Lily
Calylophus toumeyi
Toumey's Sundrops
Camissonia californica
California suncup
Camissonia chamaenerioides
Long-Capsule Mooncup
Camissonia confusa
San Bernardino suncup
Camissonia micrantha
miniature suncup
Camissonia pusilla
Little Wiry Suncup
Campanula parryi
Parry's Bellflower
Capsella bursa-pastoris
Shepherd's-Purse