Authors: Chris Roll

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Families: 74
Genera: 288
Species: 472
Total Taxa (details): 475
Anisacanthus thurberi - Thurber's Desert-Honeysuckle
Carlowrightia arizonica - Arizona Wrightwort
Trianthema portulacastrum - Desert Horse-Purslane
Amaranthus palmeri - Careless Weed
Atriplex canescens - Four-Wing Saltbush
Atriplex elegans - wheelscale saltbush
Atriplex wrightii - Wright's Saltbush
Chenopodium berlandieri - Pit-Seed Goosefoot
Chenopodium desiccatum - Arid-Land Goosefoot
Chenopodium fremontii - Fremont's Goosefoot
Chenopodium incanum - Mealy Goosefoot
Chenopodium leptophyllum - Narrow-Leaf Goosefoot
Chenopodium neomexicanum - New Mexico Goosefoot
Chenopodium watsonii - Watson's Goosefoot
Froelichia arizonica - Arizona Snake-Cotton
Gomphrena caespitosa - Tufted Globe-Amaranth
Gomphrena nitida - Pearly Globe-Amaranth
Guilleminea densa - Small Matweed
Kochia scoparia - Mexican-Fireweed
Monolepis nuttalliana - Nuttall's Poverty-Weed
Salsola tragus - Prickly Russian-Thistle
Tidestromia lanuginosa - Woolly Honeysweet
Allium kunthii - Kunth's Onion
Zephyranthes longifolia - copper zephyrlily
Cymopterus multinervatus - purplenerve springparsley
Daucus pusillus - American Wild Carrot
Eryngium heterophyllum - Wright's Eryngo
Lomatium nevadense - Nevada Desert-Parsley
Lomatium orientale - Oriental Desert-Parsley
Spermolepis lateriflora - Rillito Valley Scaleseed
Asclepias asperula - Spider Antelope-Horns
Asclepias brachystephana - Short-Crown Milkweed
Asclepias nummularia - Tufted Milkweed
Asclepias subverticillata - Horsetail Milkweed
Asclepias uncialis - Wheel Milkweed
Funastrum crispum - Wavy-Leaf Twinevine
Funastrum hartwegii - climbing milkweed
Mandevilla brachysiphon - Huachuca Mountain rocktrumpet
Lemna minor - Common Duckweed
Aristolochia watsonii - Watson's Dutchman's-Pipe
Agave palmeri - Palmer's Century-Plant
Agave parryi - Parry's Century-Plant
Dasylirion wheeleri - Common Sotol
Echeandia flavescens - Torrey's Crag-Lily
Yucca elata - Soaptree Yucca
Acourtia nana - Dwarf Desert-Peony
Ambrosia confertiflora - Weak-Leaf Burr-Ragweed
Ambrosia monogyra - Needle-Leaf Burrobush
Artemisia dracunculus - Dragon Wormwood
Artemisia ludoviciana - White Sagebrush
Baccharis pteronioides - Yerba-de-Pasmo
Baccharis salicifolia - Douglas' False Willow
Baccharis wrightii - Wright's False Willow
Bahia absinthifolia - Hairy-Seed False Goldfields
Baileya multiradiata - Showy Desert-Marigold
Berlandiera lyrata - Lyre-Leaf Greeneyes
Bidens leptocephala - Few-Flower Beggarticks
Brickellia californica - California Brickellbush
Brickellia coulteri - Coulter's Brickellbush
Brickellia floribunda - Chihuahuan Brickellbush
Brickellia venosa - Veiny Brickellbush
Calycoseris wrightii - White Tackstem
Chaenactis stevioides - Broad-Flower Pincushion
Cirsium neomexicanum - New Mexico Thistle
Cirsium ochrocentrum - Yellow-Spine Thistle
Conyza canadensis - Canadian Horseweed
Diaperia verna - Spring Pygmy-Cudweed
Dyssodia papposa - Fetid-Marigold
Ericameria laricifolia - Turpentine-Bush
Ericameria nauseosa - Rubber-Rabbitbrush
Erigeron arisolius - Arid Throne Fleabane
Erigeron divergens - Rough Fleabane
Erigeron incomptus - Rough Fleabane
Erigeron tracyi - Running Fleabane
Flourensia cernua - American Tarwort
Gamochaeta stagnalis - Thread-Root Everlasting
Grindelia nuda - curlytop gumweed
Hedosyne ambrosiifolia - Ragged Marsh-Elder
Helianthus laciniatus - Alkali Sunflower
Helianthus petiolaris - Prairie Sunflower
Heliomeris longifolia - Long-Leaf False Goldeneye
Hymenothrix wislizeni - Trans-Pecos Thimblehead
Isocoma tenuisecta - Shrine Jimmyweed
Lactuca serriola - Prickly Lettuce
Laennecia coulteri - Coulter's Woolwort
Laennecia sophiifolia - Cut-Leaf Woolwort
Leuciva dealbata - False Cottonweed
Logfia filaginoides - California False Cotton-Rose
Machaeranthera tagetina - Mesa Tansy-Aster
Malacothrix fendleri - Fendler's Desert-Dandelion
Pectis filipes - Five-Bract Chinchweed
Pectis papposa - Many-Bristle Chinchweed
Pectis prostrata - Spreading Chinchweed
Pseudognaphalium canescens - Wright's Rabbit-Tobacco
Pseudognaphalium leucocephalum - White Rabbit-Tobacco
Pseudognaphalium stramineum - Cotton-Batting-Plant
Psilactis brevilingulata - Trans-Pecos Bare-Ray-Aster
Psilactis gentryi - Mexican Bare-Ray-Aster
Ratibida columnifera - Red-Spike Mexican-Hat
Sanvitalia abertii - Albert's Creeping-Zinnia
Schkuhria pinnata - Feathery False Threadleaf
Senecio flaccidus - Thread-Leaf Ragwort
Sonchus asper - Spiny-Leaf Sow-Thistle
Stephanomeria exigua - White-Plume Wire-Lettuce
Stephanomeria pauciflora - Brown-Plume Wire-Lettuce
Stephanomeria tenuifolia - Lesser Wire-Lettuce
Stylocline sonorensis - Sonoran Neststraw
Thymophylla acerosa - American Pricklyleaf
Thymophylla pentachaeta - Five-Needle Pricklyleaf
Trixis californica - American Threefold
Uropappus lindleyi - Lindley's False Silverpuffs
Verbesina encelioides - Golden Crownbeard
Viguiera cordifolia - Heart-Leaf Goldeneye
Xanthisma gracile - Grass-Leaf Sleepy Daisy
Xanthisma spinulosum - Lacy Sleepy Daisy
Xanthium strumarium - Rough Cockleburr
Zinnia acerosa - White Zinnia
Zinnia grandiflora - Little Golden Zinnia
Chilopsis linearis - Desert-Willow
Amoreuxia palmatifida - Mexican Yellowshow
Amsinckia tessellata - Devil's-Lettuce
Cryptantha crassisepala - Thick-Sepal Cat's-Eye
Cryptantha micrantha - Greater Alley Cat's-Eye
Cryptantha nevadensis - Nevada Cat's-Eye
Cryptantha pterocarya - Wing-Nut Cat's-Eye
Eucrypta micrantha - Dainty Desert Hideseed
Lappula occidentalis - Flat-Spine Sheepburr
Nama hispidum - Sandbells
Pectocarya platycarpa - Broad-Fruit Combseed
Pectocarya recurvata - Curve-Nut Combseed
Phacelia arizonica - Arizona Scorpion-Weed
Phacelia crenulata - Notch-Leaf Scorpion-Weed
Plagiobothrys arizonicus - Arizona Popcorn-Flower
Descurainia pinnata - Western Tansy-Mustard
Draba cuneifolia - wedgeleaf draba
Hesperidanthus linearifolius - slimleaf plainsmustard
Lepidium lasiocarpum - Hairy-Pod Pepperwort
Lepidium oblongum - Veiny Pepperwort
Lepidium thurberi - Thurber's Pepperwort
Lepidium virginicum - Poorman's-Pepperwort
Physaria gordonii - Gordon's Bladderpod
Planodes virginicum - Virginia winged rockcress
Sisymbrium irio - London Rocket
Thysanocarpus curvipes - Sand Fringepod
Coryphantha vivipara - Kaibab spinystar
Cylindropuntia spinosior - Walkingstick Cactus
Echinocereus fendleri - Pink-Flower Hedgehog Cactus
Echinocereus rigidissimus - Rainbow Hedgehog Cactus
Ferocactus wislizeni - Candy Barrel Cactus
Mammillaria heyderi - Pancake Nipple Cactus
Mammillaria wrightii - Wright's Nipple Cactus
Mammillaria wrightii var. wilcoxii - Wilcox's nipple cactus
Opuntia engelmannii - Cactus-Apple
Opuntia macrocentra - Long-Spine Purple Prickly-Pear
Opuntia phaeacantha - Tulip Prickly-Pear
Celtis reticulata - Net-Leaf Hackberry
Loeflingia squarrosa - Spreading Pygmyleaf
Silene antirrhina - Sleepy Catchfly
Polanisia dodecandra - Red-Whisker Clammyweed
Commelina erecta - White-Mouth Dayflower
Convolvulus equitans - Texas Bindweed
Evolvulus alsinoides - Slender Dwarf-Morning-Glory
Evolvulus arizonicus - Wild Dwarf-Morning-Glory
Evolvulus nuttallianus - Shaggy Dwarf-Morning-Glory
Evolvulus sericeus - Silver Dwarf-Morning-Glory
Ipomoea costellata - Crest-Rib Morning-Glory
Ipomoea cristulata - Trans-Pecos Morning-Glory
Ipomoea hederacea - Ivy-Leaf Morning-Glory
Cucurbita digitata - fingerleaf gourd
Cucurbita foetidissima - Missouri Gourd
Marah gilensis - Gila Manroot
Cyperus acuminatus - Taper-Tip Flat Sedge
Cyperus difformis - Variable Flat Sedge
Cyperus flavicomus - White-Edge Flat Sedge
Cyperus sphaerolepis - Rusby's Flat Sedge
Cyperus squarrosus - Awned Flat Sedge
Eleocharis atropurpurea - Purple Spike-Rush
Eleocharis macrostachya - Pale Spike-Rush
Eleocharis palustris - Soft-Stem Spike-Rush
Eleocharis parishii - Parish's Spike-Rush
Fimbristylis annua - Annual Fimbry
Bergia texana - Texas Bergia
Elatine rubella - Red-Stem Waterwort
Ephedra trifurca - Long-Leaf Joint-Fir
Acalypha neomexicana - New Mexico Copperleaf
Croton pottsii - Leatherweed
Ditaxis neomexicana - New Mexico silverbush
Euphorbia abramsiana - Abrams' Sandmat
Euphorbia albomarginata - White-Margin Sandmat
Euphorbia davidii - David's Spurge
Euphorbia dioica - Royal Sandmat
Euphorbia exstipulata - Square-Seed Spurge
Euphorbia fendleri - Fendler's Sandmat
Euphorbia hyssopifolia - Hyssop-Leaf Sandmat
Euphorbia micromera - Sonoran Sandmat
Euphorbia serpyllifolia - Thyme-Leaf Sandmat
Euphorbia serrula - Saw-Tooth Sandmat
Euphorbia stictospora - Slim-Seed Sandmat
Tragia nepetifolia - Catnip Noseburn
Tragia ramosa - Branched Noseburn
Acacia angustissima - prairie acacia
Acmispon brachycarpus - Foothill Deerweed
Acmispon greenei - Greene's Deerweed
Astragalus allochrous - Halfmoon Milk-Vetch
Astragalus arizonicus - Arizona Milk-Vetch
Astragalus mollissimus - Woolly Milk-Vetch
Astragalus nothoxys - Sheep Milk-Vetch
Astragalus thurberi - Thurber's Milk-Vetch
Caesalpinia gilliesii - Bird-of-Paradise-Shrub
Calliandra humilis - Dwarf Stick-Pea
Crotalaria pumila - Low Rattlebox
Dalea albiflora - White-Flower Prairie-Clover
Dalea brachystachya - Fort Bowie Prairie-Clover
Dalea formosa - Featherplume
Dalea jamesii - James' Prairie-Clover
Dalea lachnostachys - Gland-Leaf Prairie-Clover
Dalea nana - Dwarf Prairie-Clover
Dalea nana var. carnescens - dwarf prairie clover
Dalea nana var. nana - dwarf prairie clover
Dalea pogonathera - Bearded Prairie-Clover
Desmanthus cooleyi - Cooley's Bundle-Flower
Desmodium neomexicanum - New Mexico ticktrefoil
Galactia wrightii - Wright's Milk-Pea
Hoffmannseggia drepanocarpa - Sickle-Pod Holdback
Lupinus concinnus - Nipomo Mesa Annual Lupine
Macroptilium gibbosifolium - Variable-Leaf Bush-Bean
Marina calycosa - San Pedro False Prairie-Clover
Mimosa aculeaticarpa - Cat-Claw Mimosa
Pediomelum pentaphyllum - Small Indian-Breadroot
Pomaria jamesii - James' False Holdback
Prosopis glandulosa - Honey Mesquite
Prosopis velutina - Velvet Mesquite
Psoralidium tenuiflorum - Slim-Flower Scurf-Pea
Rhynchosia senna - Texas snoutbean
Senegalia greggii - Long-Flower Catclaw
Senna bauhinioides - Shrubby Wild Sensitive-Plant
Sophora nuttalliana - Silky Necklacepod
Tephrosia tenella - red hoary-pea
Vachellia constricta - Mescat False Acacia
Quercus emoryi - Emory's Oak
Quercus turbinella - Arizona shrub oak
Erodium cicutarium - Red-Stem Stork's-Bill
Erodium texanum - Texas Stork's-Bill
Krameria lanceolata - Trailing Ratany
Clerodendrum coulteri - Coulter's wrinklefruit
Salvia subincisa - Saw-Tooth Sage
Linum pratense - Meadow Flax
Cevallia sinuata - Stinging-Serpent
Mentzelia albicaulis - White-Stem Blazingstar
Mentzelia montana - Variegated-Bract Blazingstar
Mentzelia multiflora - Adonis Blazingstar
Ammannia auriculata - Eared Redstem
Ammannia robusta - Grand Redstem
Cottsia gracilis - Slender Janusia
Abutilon abutiloides - Shrubby Indian-Mallow
Abutilon mollicomum - Sonoran Indian-Mallow
Abutilon parvulum - Dwarf Indian-Mallow
Anoda cristata - Crested Anoda
Ayenia filiformis - Trans-Pecos Ayenia
Malvella lepidota - Scurfy-Mallow
Sida abutifolia - Spreading Fanpetals
Sida spinosa - Prickly Fanpetals
Sphaeralcea angustifolia - Copper Globe-Mallow
Sphaeralcea hastulata - Spear Globe-Mallow
Sphaeralcea laxa - Caliche Globe-Mallow
Marsilea mollis - Chihuahuan Water-Clover
Proboscidea althaeifolia - desert unicorn-plant
Glinus radiatus - Spreading Sweetjuice
Mollugo cerviana - Thread-Stem Carpetweed
Mollugo verticillata - Green Carpetweed
Calandrinia ciliata - fringed redmaids
Cistanthe monandra - Common Mock Pussypaws
Morus microphylla - Texas Mulberry
Allionia choisyi - Annual Windmills
Allionia incarnata - trailing windmills
Boerhavia coccinea - Scarlet Spiderling
Boerhavia coulteri - Coulter's Spiderling
Boerhavia erecta - Erect Spiderling
Boerhavia pterocarpa - Apache Pass Spiderling
Boerhavia triquetra - Slender Spiderling
Boerhavia wrightii - Large-Bract Spiderling
Mirabilis linearis - Narrow-Leaf Four-O'clock
Mirabilis linearis var. decipiens - broadleaf four o'clock
Mirabilis linearis var. linearis - Narrow-Leaf Four-O'clock
Mirabilis longiflora - Sweet Four-O'clock
Eremothera chamaenerioides - Long-Capsule Mooncup
Gaura coccinea - Scarlet Evening-Primrose
Gaura hexandra - harlequinbush
Oenothera albicaulis - White-Stem Evening-Primrose
Oenothera flava - Long-Tube Evening-Primrose
Oenothera primiveris - Yellow-Flower Desert Evening-Primrose
Castilleja integra - Squawfeather
Argemone pleiacantha - Southwestern Prickly-Poppy
Corydalis aurea - Scrambled-Eggs
Eschscholzia californica - California-Poppy
Bacopa rotundifolia - Disk Water-Hyssop
Nuttallanthus texanus - Texas-Toadflax
Penstemon fendleri - Fendler's Beardtongue
Plantago elongata - Prairie Plantain
Plantago patagonica - Woolly Plantain
Plantago virginica - Pale-Seed Plantain
Platanus wrightii - Arizona Sycamore
Aristida adscensionis - Six-Weeks Three-Awn
Aristida havardii - Havard's Three-Awn
Aristida purpurea - Purple Three-Awn
Aristida ternipes - Spider Grass
Bothriochloa barbinodis - Cane Beard Grass
Bothriochloa ischaemum - Turkestan Beard Grass
Bothriochloa springfieldii - Springfield's Beard Grass
Bouteloua barbata - Six-Weeks Grama
Bouteloua chondrosioides - Spruce-Top Grama
Bouteloua curtipendula - Side-Oats Grama
Bouteloua hirsuta - Hairy Grama
Bouteloua radicosa - Purple Grama
Bouteloua rothrockii - Rothrock's grama
Cenchrus spinifex - Coastal Sandburr
Chloris virgata - Feather Windmill Grass
Cynodon dactylon - Bermuda Grass
Dasyochloa pulchella - False Fluff Grass
Digitaria californica - California Crab Grass
Echinochloa crus-galli - Large Barnyard Grass
Elymus elymoides - Western Bottle-Brush Grass
Enneapogon cenchroides - South African Nine-Awn Grass
Enneapogon desvauxii - Nine-Awn Grass
Eragrostis curvula - Weeping Love Grass
Eragrostis intermedia - Plains Love Grass
Eragrostis lehmanniana - Lehmann's Love Grass
Eragrostis pectinacea - Purple Love Grass
Eriochloa acuminata - Taper-Tip Cup Grass
Heteropogon contortus - Twisted Tanglehead
Hilaria belangeri - Curly-Mesquite
Hilaria mutica - tobosagrass
Hopia obtusa - Vine-Mesquite
Hordeum pusillum - Little Barley
Leptochloa dubia - Green-Sprangletop
Leptochloa fusca - Bearded Beetle Grass
Leptochloa viscida - Sonoran Viper Grass
Lycurus setosus - Bristly Wolf's-Tail
Muhlenbergia fragilis - Delicate Muhly
Muhlenbergia pauciflora - New Mexico Muhly
Muhlenbergia repens - Creeping Muhly
Panicum antidotale - Giant Panic Grass
Panicum capillare - Common Panic Grass
Panicum hirticaule - Mexican Panic Grass
Paspalum distichum - Jointed Crown Grass
Pennisetum ciliare - Buffel Fountain Grass
Schismus barbatus - Common Mediterranean Grass
Schizachyrium cirratum - Texas False Bluestem
Setaria leucopila - Streambed Bristle Grass
Setaria macrostachya - Large-Spike Bristle Grass
Sorghum halepense - Johnson Grass
Sporobolus airoides - Alkali-Sacaton
Sporobolus contractus - Narrow-Spike Dropseed
Sporobolus pyramidatus - Target Dropseed
Sporobolus wrightii - Wright's Dropseed
Tragus berteronianus - Spiked Burr Grass
Tridens muticus - slim tridens
Trisetum interruptum - prairie false oat
Urochloa arizonica - Arizona Liverseed Grass
Vulpia octoflora - Eight-Flower Six-Weeks Grass
Eriastrum diffusum - Miniature Woolstar
Gilia flavocincta - Lesser Yellow-Throat Gily-Flower
Gilia flavocincta subsp. australis - lesser yellowthroat gilia
Gilia mexicana - El Paso Gily-Flower
Ipomopsis longiflora - White-Flower Skyrocket
Leptosiphon chrysanthus - Golden Perennial Gily-Flower
Linanthus bigelovii - Bigelow's Desert-Trumpets
Polygala barbeyana - blue milkwort
Polygala obscura - velvetseed milkwort
Eriogonum abertianum - Abert's Wild Buckwheat
Eriogonum polycladon - Sorrel Wild Buckwheat
Eriogonum trichopes - Little Desert Trumpet
Eriogonum wrightii - Bastard-Sage
Persicaria bicornis - Pink Knotweed
Polygonum argyrocoleon - Silver-Sheath Knotweed
Polygonum aviculare - Yard Knotweed
Heteranthera limosa - Blue Mud-Plantain
Portulaca oleracea - Little-Hogweed
Portulaca suffrutescens - Shrubby Purslane
Portulaca umbraticola - Wing-Pod Purslane
Potamogeton foliosus - Leafy Pondweed
Potamogeton nodosus - Long-Leaf Pondweed
Androsace occidentalis - Western Rock-Jasmine
Astrolepis sinuata - Wavy Scaly Cloak Fern
Bommeria hispida - Copper Fern
Myriopteris rufa - Eaton's Lip Fern
Notholaena grayi - Gray's Cloak Fern
Pellaea truncata - Spiny Cliffbrake
Anemone tuberosa - Desert Thimbleweed
Clematis drummondii - Texas Virgin's-Bower
Delphinium wootonii - Organ Mountain Larkspur
Myosurus cupulatus - Arizona Mousetail
Myosurus minimus - Tiny Mousetail
Fallugia paradoxa - Apache-Plume
Populus fremontii - Fremont cottonwood
Salix exigua - Narrow-Leaf Willow
Salix gooddingii - Goodding's Black Willow
Sapindus drummondii - western soapberry
Verbascum virgatum - Wand Mullein
Chamaesaracha coronopus - greenleaf five eyes
Chamaesaracha sordida - Hairy Five-Eyes
Datura wrightii - Sacred Thorn-Apple
Lycium andersonii - Red-Berry Desert-Thorn
Lycium pallidum - Pale Desert-Thorn
Nicotiana obtusifolia - Desert Tobacco
Physalis acutifolia - Sharp-Leaf Ground-Cherry
Physalis angulata - Cut-Leaf Ground-Cherry
Physalis hederifolia - Ivy-Leaf Ground-Cherry
Solanum douglasii - Green-Spot Nightshade
Solanum elaeagnifolium - Silver-Leaf Nightshade
Solanum jamesii - Wild Potato
Solanum rostratum - Horned Nightshade
Talinum paniculatum - Spoon-Leaf Fameflower
Ulmus pumila - Siberian Elm
Aloysia wrightii - Wright's Beebrush
Glandularia latilobata - Broad-Lobe Mock Vervain
Verbena bracteata - Carpet Vervain
Verbena gracilis - Fort Huachuca Vervain
Verbena plicata - Fan-Leaf Vervain
Kallstroemia californica - California Caltrop
Larrea tridentata - Creosote-Bush
Tribulus terrestris - Puncturevine