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4979 Plants Found

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Ordered by scientific name.

Scientific Name	Common Name	†	Map‡
Abdra brachycarpa (Nutt. ex Torr. & A.Gray) Greene	Short-Fruited Whitlow-Grass
Abies concolor (Gord. & Glend.) Lindl. ex Hildebr.	White Fir
Abronia angustifolia Greene	Purple Sand Verbena
Abronia elliptica A. Nelson	Fragrant White Sand Verbena
Abronia maritima Nutt. ex S. Watson	red sand verbena
Abronia nana S. Watson	Dwarf Sand Verbena
Abronia pogonantha Heimerl	Mojave sand verbena
Abronia turbinata Torr. ex S. Watson	Transmontane Sand Verbena
Abronia umbellata Lam.	Pink Sand Verbena
Abronia villosa S. Watson	desert sand verbena
Abutilon abutiloides (Jacq.) Garcke ex Hochr.	shrubby Indian mallow
Abutilon coahuilae Kearney	Coahuila Indian-Mallow
Abutilon incanum (Link) Sweet	Pelotazo
Abutilon malacum S. Watson	yellow Indian mallow
Abutilon mollicomum (Willd.) Sweet	Sonoran Indian mallow
Abutilon palmeri A. Gray	Palmer's Indian mallow
Abutilon parishii S. Watson	Parish's Indian mallow
Abutilon parvulum A. Gray	dwarf Indian mallow
Abutilon reventum S. Watson	Yellowflower Indian Mallow
Abutilon theophrasti Medik.	Velvetleaf
Acacia baileyana F. Muell.	cootamundra wattle
Acacia cultriformis A.Cunn. ex G.Don	Knife Acacia
Acacia cyclops A. Cunn. ex G. Don	coastal wattle
Acacia dealbata Link	silver wattle
Acacia decurrens (Wendl. f.) Willd.	green wattle
Acacia elata A. Cunn. ex Benth.	Cedar Wattle
Acacia longifolia (Andrews) Willd.	Sydney golden wattle
Acacia mearnsii De Wild.	black wattle
Acacia melanoxylon R. Br.	blackwood
Acacia paradoxa DC.	paradox acacia
Acacia podalyriifolia A. Cunn. ex G. Don	pearl wattle
Acacia pycnantha Benth.	golden wattle
Acacia redolens Maslin	bank catclaw
Acacia retinodes Schltdl.	water wattle
Acacia saligna (Labill.) Wendl. f.	orange wattle
Acacia verticillata (L'Hér.) Willd.	prickly Moses
Acaciella angustissima (Mill.) Britton & Rose	Prairie Acacia
Acalypha californica Benth.	California copperleaf
Acalypha neomexicana Müll. Arg.	New Mexico copperleaf
Acalypha ostryifolia Riddell	Pineland Threeseed Mercury
Acalypha phleoides Cav.	shrubby copperleaf
Acalypha subviscida	Subviscid Copperleaf
Acamptopappus shockleyi A. Gray	Shockley's Goldenhead
Acamptopappus sphaerocephalus (Harv. & A. Gray ex A. Gray) A. Gray	rayless goldenhead
Acanthomintha ilicifolia (A. Gray) A. Gray	San Diego Thorn-Mint
Acer glabrum Torr.	Rocky Mountain Maple
Acer grandidentatum Nutt.	bigtooth maple
Acer macrophyllum Pursh	Bigleaf Maple
Acer negundo L.	Box Elder	✓
Acer saccharum Marshall	Sugar Maple	✓
Achillea filipendulina Lam.	fernleaf yarrow
Achillea millefolium L.	Common Yarrow
Achnatherum aridum (M.E. Jones) Barkworth	Mormon needlegrass
Achnatherum coronatum (Thurb.) Barkworth	giant ricegrass
Achnatherum eminens (Cav.) Barkworth	southwestern needlegrass
Achnatherum hymenoides (Roem. & Schult.) Barkworth	Indian Ricegrass
Achnatherum latiglume (Swallen) Barkworth	Sierra needlegrass
Achnatherum lemmonii (Vasey) Barkworth	Lemmon's Needlegrass
Achnatherum lettermanii (Vasey) Barkworth	Letterman's needlegrass
Achnatherum lobatum (Swallen) Barkworth	littleawn needlegrass
Achnatherum nelsonii (Scribn.) Barkworth	Columbia needlegrass
Achnatherum occidentale (Thurb.) Barkworth	Western Needlegrass
Achnatherum parishii (Vasey) Barkworth	Parish's needlegrass
Achnatherum robustum (Vasey) Barkworth	sleepygrass
Achnatherum thurberianum (Piper) Barkworth	Thurber's Needlegrass
Achyrachaena mollis Schauer	blow wives
Achyronychia cooperi Torr. & A. Gray	onyxflower
Acleisanthes chenopodioides (A. Gray) Standl.	Goosefoot Moonpod
Acleisanthes longiflora A. Gray	angel's trumpets
Acleisanthes nevadensis (Standl.) B.L.Turner	Desert Moonpod
Acmispon americanus (Nutt.) Rydb.	American Bird's-Foot Trefoil
Acmispon argophyllus (A.Gray) Brouillet	Silver Bird's-Foot Trefoil
Acmispon argyraeus (Greene) Brouillet	Canyon Bird's-Foot Trefoil
Acmispon brachycarpus (Benth.) D.D.Sokoloff	Foothill Deervetch
Acmispon denticulatus (Drew) D.D.Sokoloff	Riverbar Bird's-Foot Trefoil
Acmispon grandiflorus (Benth.) Brouillet	Chaparral Bird's-Foot Trefoil
Acmispon haydonii (Orcutt) Brouillet	Rock Bird's-Foot Trefoil
Acmispon neomexicanus (Greene) Brouillet	Greene's Bird's-Foot Trefoil
Acmispon parviflorus (Benth.) D.D.Sokoloff	Desert Deervetch
Acmispon plebeius (Brandegee) Allred	New Mexico Bird's-Foot Trefoil
Acmispon procumbens (Greene) Brouillet	Silky Deerweed
Acmispon rigidus (Benth.) Brouillet	Shrubby Deervetch
Acmispon strigosus (Nutt.) D.D.Sokoloff	Strigose Bird's-Foot Trefoil
Acmispon utahensis (Ottley) Brouillet	Utah Bird's-Foot Trefoil
Acmispon wrangelianus (Fisch. & C.A.Mey.) Sokoloff	Chilean Bird's-Foot Trefoil
Acmispon wrightii (A.Gray) Brouillet	Wright's Deervetch
Aconitum columbianum Nutt.	Columbian monkshood
Acourtia microcephala DC.	sacapellote
Acourtia nana (A. Gray) Reveal & R.M. King	dwarf desertpeony
Acourtia thurberi (A. Gray) Reveal & R.M. King	Thurber's desertpeony
Acourtia wrightii (A. Gray) Reveal & R.M. King	brownfoot
Acrachne racemosa (Roem. & Schult.) Ohwi	Goosegrass
Actaea arizonica (S. Watson) J. Compton	Arizona Bugbane
Actaea rubra (Aiton) Willd.	Red Baneberry
Adenophyllum cooperi (A. Gray) Strother	Cooper's Dogweed
Adenophyllum porophylloides (A. Gray) Strother	San Felipe dogweed
Adenostoma fasciculatum Hook. & Arn.	Chamise
Adenostoma sparsifolium Torr.	redshank
Adiantum aleuticum (Rupr.) Paris	Aleutian Maidenhair
Adiantum capillus-veneris L.	common maidenhair
Adiantum jordanii C.H. Mull.	California maidenhair
Adolphia californica S. Watson	California Prickbush
Aegilops cylindrica Host	Jointed Goatgrass
Aegilops tauschii Coss.	Tausch's goatgrass
Aeonium arboreum (L.) Webb & Berthel.	tree aenium
Aeonium haworthii Webb & Bethel.	Haworth's aeonium
Aeschynomene villosa Poir.	hairy jointvetch
Aesculus californica (Spach) Nutt.	California buckeye
Agastache breviflora (A. Gray) Epling	Trans-Pecos giant hyssop
Agastache pallida (Lindl.) Cory	Pale Giant Hyssop
Agastache pallidiflora (A. Heller) Rydb.	Bill Williams Mountain giant hyssop
Agastache rupestris (Greene) Standl.	threadleaf giant hyssop
Agastache urticifolia (Benth.) Kuntze	nettleleaf giant hyssop
Agastache wrightii (Greenm.) Wooton & Standl.	Sonoran giant hyssop
Agave ×arizonica	Arizona Century Plant
Agave americana L.	American century plant
Agave chrysantha Peebles	goldenflower century plant
Agave delamateri W.C. Hodgson & L. Slauson	Tonto Basin Century Plant
Agave deserti Engelm.	desert agave
Agave murpheyi F. Gibson	Murphey's Century Plant
Agave palmeri Engelm.	Palmer's century plant
Agave parryi Engelm.	Parry's agave
Agave parviflora Torr.	Smallflower Century Plant
Agave schottii Engelm.	Schott's century plant
Agave shawii Engelm.	Coastal Agave
Agave toumeyana Trel. ex Standl.	Toumey's Century Plant
Agave utahensis Engelm.	Utah Agave
Ageratina adenophora (Spreng.) R.M. King & H. Rob.	sticky snakeroot
Ageratina herbacea (A. Gray) R.M. King & H. Rob.	fragrant snakeroot
Ageratina paupercula (A. Gray) R.M. King & H. Rob.	Santa Rita snakeroot
Ageratina rothrockii (A. Gray) R.M. King & H. Rob.	Rothrock's Snakeroot
Ageratina wrightii (A. Gray) R.M. King & H. Rob.	Wright's snakeroot
Agnorhiza ovata (Torr. & A. Gray ex Torr.) W.A. Weber	southern mule-ears
Agoseris aurantiaca (Hook.) Greene	orange agoseris
Agoseris glauca (Pursh) Raf.	pale agoseris
Agoseris grandiflora (Nutt.) Greene	bigflower agoseris
Agoseris heterophylla (Nutt.) Greene	annual agoseris
Agoseris retrorsa (Benth.) Greene	Spearleaf Agoseris
Agrimonia gryposepala Wallr.	tall hairy agrimony
Agrimonia striata Michx.	Roadside Agrimony
Agropyron cristatum (L.) Gaertn.	crested wheatgrass
Agropyron fragile (Roth) P. Candargy	Siberian Wheatgrass
Agrostis capillaris L.	colonial bentgrass
Agrostis elliottiana Schult.	Elliott's Bentgrass
Agrostis exarata Trin.	spike bentgrass
Agrostis gigantea Roth	Redtop
Agrostis idahoensis Nash	Idaho bentgrass
Agrostis microphylla Steud.	Small-Leaf Bentgrass
Agrostis oregonensis Vasey	Oregon bentgrass
Agrostis pallens Trin.	Seashore Bentgrass
Agrostis perennans (Walter) Tuck.	Upland Bentgrass
Agrostis scabra Willd.	Rough Bentgrass
Agrostis stolonifera L.	Creeping Bentgrass
Ailanthus altissima (Mill.) Swingle	Tree of Heaven
Aira caryophyllea L.	silver hairgrass
Aira elegans Willd. ex Roem. & Schult.	Annual Silver Hairgrass
Aizoon pubescens Eckl. & Zeyh.	Coastal Galenia
Albizia julibrissin Durazz.	Persian Silktree
Alcea rosea L.	hollyhock
Aldama purisimae (Brandegee) E.E.Schill. & Panero	(Unnamed) Goldeneye
Alhagi maurorum Medik.	camelthorn
Aliciella hutchinsifolia (Rydb.) J.M. Porter	Desert Pale Gilia
Aliciella latifolia (S. Watson) J.M. Porter	broad-leaf gilia
Aliciella leptomeria (A. Gray) J.M. Porter	sand gilia
Aliciella lottiae (Day) J.M. Porter	Lott's gilia
Aliciella micromeria (A. Gray) J.M. Porter	Dainty Gilia
Aliciella monoensis J.M.Porter & A.G.Day	Mono Lake Aliciella
Aliciella ripleyi (Barneby) J.M. Porter	Ripley's Gilia
Aliciella triodon (Eastw.) Brand	Coyote Gilia
Alisma triviale Pursh	Northern Water Plantain
Allenrolfea occidentalis (S. Watson) Kuntze	Iodine Bush
Allionia incarnata L.	trailing windmills
Allium acuminatum Hook.	tapertip onion
Allium amplectens Hook.	narrowleaf onion
Allium atrorubens S. Watson	Dark Red Onion
Allium bigelovii S. Watson	Bigelow's onion
Allium bisceptrum S. Watson	twincrest onion
Allium burlewii Davidson	Burlew's onion
Allium campanulatum S. Watson	dusky onion
Allium cepa L.	garden onion
Allium cernuum Roth	Nodding Onion
Allium cratericola Eastw.	Cascade onion
Allium fimbriatum S. Watson	fringed onion
Allium fimbriatum var. denticulatum Ownbey & Aase ex Traub	Toothed Onion
Allium geyeri S. Watson	Geyer's onion
Allium gooddingii Ownbey	Goodding's Onion
Allium haematochiton S. Watson	Redskin Onion
Allium hyalinum Curran	glassy onion
Allium kunthii G. Don	Kunth's onion
Allium lacunosum S. Watson	pitted onion
Allium macropetalum Rydb.	largeflower onion
Allium monticola Davidson	San Bernardino Mountain onion
Allium munzii (Ownbey ex Traub) McNeal	Munz's Onion
Allium neapolitanum Cirillo	white garlic
Allium nevadense S. Watson	Nevada Onion
Allium parishii S. Watson	Parish's onion
Allium parryi S. Watson	Parry's Fringed Onion
Allium peninsulare Lemmon ex Greene	Mexicali onion
Allium plummerae S. Watson	Tanners Canyon onion
Allium praecox Brandegee	early onion
Allium triquetrum L.	threecorner leek
Allophyllum divaricatum (Nutt.) A.D. Grant & V.E. Grant	purple false gilyflower
Allophyllum gilioides (Benth.) A.D. Grant & V.E. Grant	dense false gilyflower
Allophyllum glutinosum (Benth.) A.D. Grant & V.E. Grant	sticky false gilyflower
Allophyllum integrifolium (Brand) A.D. Grant & V.E. Grant	white false gilyflower
Almutaster pauciflorus (Nutt.) Á. Löve & D. Löve	alkali marsh aster
Alnus incana (L.) Moench	Gray Alder
Alnus oblongifolia Torr.	Arizona alder
Alnus rhombifolia Nutt.	white alder
Aloe vera (L.) Burm. f.	Barbados aloe
Alopecurus aequalis Sobol.	Shortawn Foxtail
Alopecurus carolinianus Walter	Carolina foxtail
Alopecurus geniculatus L.	water foxtail
Alopecurus pratensis L.	meadow foxtail
Alopecurus saccatus Vasey	Pacific foxtail
Aloysia citrodora Paláu	Lemon Beebrush
Aloysia gratissima (Gillies & Hook.) Troncoso	whitebrush
Aloysia wrightii (A. Gray) A. Heller	Wright's beebrush
Alternanthera caracasana Kunth	Mat Chaff Flower
Alternanthera philoxeroides (Mart.) Griseb.	alligatorweed
Alyssum alyssoides (L.) L.	pale madwort
Alyssum simplex Rudolphi	alyssum
Amaranthus albus L.	Prostrate Pigweed
Amaranthus arenicola I.M. Johnst.	Sandhill Amaranth
Amaranthus blitoides S. Watson	Mat Amaranth
Amaranthus blitum L.	Purple Amaranth
Amaranthus californicus (Moq.) S. Watson	California amaranth
Amaranthus caudatus L.	foxtail amaranth
Amaranthus crassipes Schltdl.	Spreading Amaranth
Amaranthus cruentus L.	red amaranth
Amaranthus deflexus L.	largefruit amaranth
Amaranthus fimbriatus (Torr.) Benth. ex S. Watson	fringed amaranth
Amaranthus hybridus L.	Slim Amaranth
Amaranthus hypochondriacus L.	Prince-of-Wales feather
Amaranthus obcordatus (A. Gray) Standl.	Trans-Pecos amaranth
Amaranthus palmeri S. Watson	Carelessweed
Amaranthus powellii S. Watson	Powell's Amaranth
Amaranthus retroflexus L.	redroot amaranth
Amaranthus spinosus L.	Spiny Amaranth
Amaranthus torreyi (A. Gray) Benth. ex S. Watson	Torrey's amaranthus
Amaranthus tuberculatus (Moq.) Sauer	Roughfruit Amaranth
Amaranthus venulosus S. Watson	Fringed Amaranth
Amaranthus viridis L.	slender amaranth
Amaranthus watsonii Standl.	Watson's amaranth
Amaranthus wrightii S. Watson	Wright's amaranth
Amaryllis belladonna L.	belladonna lily
Amblyopappus pusillus Hook. & Arn.	dwarf coastweed
Ambrosia acanthicarpa Hook.	Flatspine Bur Ragweed
Ambrosia ambrosioides (Cav.) Payne	ambrosia leaf bur ragweed
Ambrosia artemisiifolia L.	Common Ragweed
Ambrosia chamissonis (Less.) Greene	silver bur ragweed
Ambrosia chenopodiifolia (Benth.) Payne	San Diego Bur Ragweed
Ambrosia confertiflora DC.	weakleaf bur ragweed
Ambrosia cordifolia (A. Gray) Payne	Tucson bur ragweed
Ambrosia deltoidea (Torr.) Payne	triangle bur ragweed
Ambrosia dumosa (A. Gray) Payne	White Bursage
Ambrosia eriocentra (A. Gray) Payne	woolly fruit bur ragweed
Ambrosia ilicifolia (A. Gray) Payne	hollyleaf bur ragweed
Ambrosia monogyra (Torr. & A.Gray) Strother & B.G.Baldwin	Singlewhorl Burrobrush
Ambrosia psilostachya DC.	Cuman Ragweed
Ambrosia pumila (Nutt.) A. Gray	Dwarf Bur Ragweed
Ambrosia tomentosa Nutt.	Skeletonleaf Bur Ragweed
Ambrosia trifida L.	Giant Ragweed
Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem.	Saskatoon serviceberry
Amelanchier utahensis Koehne	Utah serviceberry
Ammannia auriculata Willd.	eared redstem
Ammannia coccinea Rottb.	valley redstem
Ammannia robusta Heer & Regel	grand redstem
Ammi majus L.	large bullwort
Ammi visnaga (L.) Lam.	toothpickweed
Amoreuxia palmatifida Moc. & Sessé ex DC.	Mexican yellowshow
Amorpha californica Nutt.	California false indigo
Amorpha fruticosa L.	False Indigo Bush
Amphipappus fremontii Torr. & A. Gray ex A. Gray	Fremont's Chaffbush
Amsinckia douglasiana A. DC.	Douglas' fiddleneck
Amsinckia eastwoodiae J.F. Macbr.	Eastwood's fiddleneck
Amsinckia lycopsoides Lehm.	Tarweed Fiddleneck
Amsinckia menziesii (Lehm.) A. Nelson & J.F. Macbr.	Menzies' fiddleneck
Amsinckia spectabilis Fisch. & C.A. Mey.	woolly breeches
Amsinckia tessellata A. Gray	bristly fiddleneck
Amsinckia vernicosa Hook. & Arn.	green fiddleneck
Amsonia grandiflora Alexander	Arizona Bluestar
Amsonia jonesii Woodson	Jones' Bluestar
Amsonia kearneyana Woodson	Kearney's Bluestar
Amsonia longiflora Torr.	tubular bluestar
Amsonia palmeri A. Gray	Palmer's bluestar
Amsonia tomentosa Torr. & Frém.	Woolly Bluestar
Anaphalis margaritacea (L.) Benth.	Western Pearly Everlasting
Anchusa arvensis (L.) M. Bieb.	small bugloss
Ancistrocarphus filagineus A. Gray	false neststraw
Andropogon gerardii Vitman	Big Bluestem
Andropogon glomeratus (Walter) Britton, Sterns & Poggenb.	Bushy Bluestem
Andropogon virginicus L.	Broomsedge Bluestem	✓
Androsace elongata L.	California Rockjasmine
Androsace occidentalis Pursh	western rockjasmine
Androsace septentrionalis L.	pygmyflower rockjasmine
Androstephium breviflorum S. Watson	pink funnel lily
Anemone tuberosa Rydb.	tuber anemone
Anemopsis californica (Nutt.) Hook. & Arn.	yerba mansa
Anethum graveolens L.	dill
Angelica tomentosa S. Watson	woolly angelica
Anisacanthus thurberi (Torr.) A. Gray	Thurber's desert honeysuckle
Anisocarpus madioides Nutt.	tarweed
Anisocoma acaulis Torr. & A. Gray	scalebud
Anoda abutiloides A. Gray	Indian Anoda
Anoda crenatiflora Ortega	thicket anoda
Anoda cristata (L.) Schltdl.	Crested Anoda
Anoda pentaschista A. Gray	field anoda
Anoda reticulata S. Watson	Netted Anoda
Anredera cordifolia (Ten.) Steenis	heartleaf madeiravine
Antennaria dimorpha (Nutt.) Torr. & A. Gray	low pussytoes
Antennaria marginata Greene	whitemargin pussytoes
Antennaria media Greene	Rocky Mountain pussytoes
Antennaria parvifolia Nutt.	small-leaf pussytoes
Antennaria rosea Greene	rosy pussytoes
Anthemis arvensis L.	corn chamomile
Anthemis cotula L.	stinking chamomile
Anthriscus caucalis M. Bieb.	Bur Chervil
Anticlea elegans (Pursh) Rydb.	Mountain Deathcamas
Antigonon leptopus Hook. & Arn.	coral vine
Antirrhinum majus L.	garden snapdragon
Anulocaulis annulatus (Coville) Standl.	Valley Ringstem
Anulocaulis leiosolenus (Torr.) Standl.	southwestern ringstem
Apera interrupta (L.) P. Beauv.	Dense Silky Bentgrass
Aphanes arvensis L.	field parsley piert
Aphanisma blitoides Nutt. ex Moq.	San Diego coastalcreeper
Aphanostephus ramosissimus DC.	plains dozedaisy
Apiastrum angustifolium Nutt.	mock parsley
Apium graveolens L.	wild celery
Apocynum ×floribundum	Intermediate Dogbane
Apocynum androsaemifolium L.	Spreading Dogbane
Apocynum cannabinum L.	Common Dogbane
Apodanthera undulata A. Gray	melon loco
Aponogeton distachyos L. f.	Cape Pondweed
Aptenia cordifolia (L. f.) Schwant.	heartleaf iceplant
Aquilegia chrysantha A. Gray	Golden Columbine
Aquilegia coerulea James	Colorado Blue Columbine
Aquilegia desertorum (M.E. Jones) Cockerell ex A. Heller	Desert Columbine
Aquilegia elegantula Greene	Western Red Columbine
Aquilegia formosa Fisch. ex DC.	Western Columbine
Aquilegia longissima A. Gray	longspur columbine
Aquilegia shockleyi Eastw.	Desert Columbine
Arabidopsis thaliana (L.) Heynh.	mouseear cress
Arabis eschscholtziana Andrz.	Eschscholtz's hairy rockcress
Arabis pycnocarpa M.Hopkins	Slender Rock Cress
Aralia californica S. Watson	California spikenard
Aralia humilis Cav.	Arizona Spikenard
Aralia racemosa L.	American Spikenard
Araujia sericifera Brot.	white bladderflower
Arbutus arizonica (A. Gray) Sarg.	Arizona madrone
Arbutus menziesii Pursh	Pacific Madrone
Arbutus unedo L.	strawberry tree
Arceuthobium abietinum (Engelm.) Hawksw. & Wiens	fir dwarf mistletoe
Arceuthobium apachecum Hawksw. & Wiens	Apache dwarf mistletoe
Arceuthobium blumeri A. Nelson	southwestern white pine dwarf mistletoe
Arceuthobium californicum Hawksw. & Wiens	sugar pine dwarf mistletoe
Arceuthobium campylopodum Engelm.	western dwarf mistletoe
Arceuthobium cyanocarpum (A. Nelson ex Rydb.) A. Nelson	Limber Pine Dwarf Mistletoe
Arceuthobium divaricatum Engelm.	pinyon dwarf mistletoe
Arceuthobium douglasii Engelm.	Douglas-fir dwarf mistletoe
Arceuthobium gillii Hawksw. & Wiens	Huachuca Mountain dwarf mistletoe
Arceuthobium microcarpum (Engelm.) Hawksw. & Wiens	Western Spruce Dwarf Mistletoe
Arceuthobium occidentale Engelm.	gray pine dwarf mistletoe
Arceuthobium vaginatum (Willd.) J. Presl	pineland dwarf mistletoe
Arctium lappa L.	greater burdock
Arctium minus Bernh.	Lesser Burdock
Arctomecon californica Torr. & Frém.	California Bearpoppy
Arctomecon humilis Coville	Common Bearpoppy
Arctomecon merriamii Coville	Desert Bearpoppy
Arctostaphylos glandulosa Eastw.	Eastwood's manzanita
Arctostaphylos glauca Lindl.	bigberry manzanita
Arctostaphylos otayensis Wies. & Schreib.	Otay Manzanita
Arctostaphylos parryana Lemmon	Parry Manzanita
Arctostaphylos patula Greene	greenleaf manzanita
Arctostaphylos pringlei Parry	Pringle manzanita
Arctostaphylos pungens Kunth	pointleaf manzanita
Arctostaphylos rainbowensis J.E. Keeley & A. Massihi	Rainbow Manzanita
Arctostaphylos refugioensis Gankin	Refugio Manzanita
Arenaria lanuginosa (Michx.) Rohrb.	spreading sandwort
Arenaria paludicola B.L. Rob.	marsh sandwort
Arenaria serpyllifolia L.	thymeleaf sandwort
Argemone arizonica G.B. Ownbey	Arizona Pricklypoppy
Argemone corymbosa Greene	Mojave Pricklypoppy
Argemone gracilenta Greene	Sonoran pricklypoppy
Argemone munita Durand & Hilg.	flatbud pricklypoppy
Argemone ochroleuca Sweet	Pale Mexican Pricklypoppy
Argemone pleiacantha Greene	southwestern pricklypoppy
Argemone polyanthemos (Fedde) G.B. Ownbey	crested pricklypoppy
Argentina anserina (L.) Rydb.	Silverweed Cinquefoil
Argyranthemum frutescens (L.) Sch. Bip.	marguerite
Argyrochosma incana (C. Presl) Windham	hairy false cloak fern
Argyrochosma limitanea (Maxon) Windham	southwestern false cloak fern
Argythamnia adenophora A. Gray	glandular silverbush
Argythamnia brandegeei Millsp.	Sonoran silverbush
Argythamnia californica Brandegee	California silverbush
Argythamnia claryana Jeps.	desert silverbush
Argythamnia lanceolata (Benth.) Müll. Arg.	narrowleaf silverbush
Argythamnia neomexicana Müll. Arg.	New Mexico silverbush
Argythamnia serrata (Torr.) Müll. Arg.	Yuma silverbush
Aristida adscensionis L.	sixweeks threeawn
Aristida arizonica Vasey	Arizona threeawn
Aristida californica Thurb. ex S. Watson	California threeawn
Aristida divaricata Humb. & Bonpl. ex Willd.	poverty threeawn
Aristida havardii Vasey	Havard's Threeawn
Aristida oligantha Michx.	Prairie Threeawn
Aristida pansa Wooton & Standl.	Wooton's threeawn
Aristida purpurea Nutt.	Purple Threeawn
Aristida schiedeana Trin. & Rupr.	single threeawn
Aristida ternipes Cav.	spidergrass
Aristolochia watsonii Wooton & Standl.	Watson's dutchman's pipe
Armeria maritima (Mill.) Willd.	thrift seapink
Armoracia rusticana G. Gaertn., B. Mey. & Scherb.	Horseradish
Arnica chamissonis Less.	Chamisso arnica
Arnica discoidea Benth.	rayless arnica
Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl	tall oatgrass
Artemisia annua L.	sweet sagewort
Artemisia arbuscula Nutt.	Little Sagebrush
Artemisia biennis Willd.	biennial wormwood
Artemisia bigelovii A. Gray	Bigelow sage
Artemisia californica Less.	coastal sagebrush
Artemisia campestris L.	field sagewort
Artemisia carruthii Alph. Wood ex Carruth.	Carruth's sagewort
Artemisia douglasiana Besser	Douglas' sagewort
Artemisia dracunculus L.	tarragon
Artemisia filifolia Torr.	sand sagebrush
Artemisia franserioides Greene	ragweed sagebrush
Artemisia ludoviciana Nutt.	White Sagebrush
Artemisia nova A. Nelson	Black Sagebrush
Artemisia palmeri A. Gray	San Diego Sagewort
Artemisia pycnocephala (Less.) DC.	beach wormwood
Artemisia pygmaea A. Gray	Pygmy Sagebrush
Artemisia rothrockii A. Gray	Timberline Sagebrush
Artemisia spinescens D.C.Eaton	Bud Sagebrush
Artemisia tridentata Nutt.	Big Sagebrush
Artemisia vulgaris L.	Common Mugwort
Arthrocnemum subterminale (Parish) Standl.	Parish's glasswort
Arundo donax L.	Giant Reed
Asanthus squamulosus (A. Gray) R.M. King & H. Rob.	Mule Mountain brickellbush
Asclepias albicans S. Watson	whitestem milkweed
Asclepias angustifolia Schweigg.	Arizona milkweed
Asclepias asperula (Decne.) Woodson	spider milkweed
Asclepias brachystephana Engelm. ex Torr.	Bract Milkweed
Asclepias californica Greene	California milkweed
Asclepias cryptoceras S. Watson	Pallid Milkweed
Asclepias curassavica L.	Tropical Milkweed
Asclepias engelmanniana Woodson	Engelmann's Milkweed
Asclepias eriocarpa Benth.	woollypod milkweed
Asclepias erosa Torr.	desert milkweed
Asclepias fascicularis Decne.	Mexican whorled milkweed
Asclepias fruticosa L.	African milkweed
Asclepias glaucescens Kunth	nodding milkweed
Asclepias hallii A. Gray	Hall's Milkweed
Asclepias hypoleuca (A. Gray) Woodson	mahogany milkweed
Asclepias incarnata L.	Swamp Milkweed
Asclepias involucrata Engelm. ex Torr.	Dwarf Milkweed
Asclepias latifolia (Torr.) Raf.	broadleaf milkweed
Asclepias lemmonii A. Gray	Lemmon's milkweed
Asclepias linaria Cav.	pineneedle milkweed
Asclepias macrotis Torr.	longhood milkweed
Asclepias nummularia Torr.	tufted milkweed
Asclepias nyctaginifolia A. Gray	Mojave milkweed
Asclepias oenotheroides Cham. & Schltdl.	hierba de zizotes
Asclepias quinquedentata A. Gray	slimpod milkweed
Asclepias rusbyi (Vail) Woodson	Rusby's Milkweed
Asclepias speciosa Torr.	showy milkweed
Asclepias subulata Decne.	rush milkweed
Asclepias subverticillata (A. Gray) Vail	Horsetail Milkweed
Asclepias tuberosa L.	Butterfly Milkweed
Asclepias uncialis Greene	Wheel Milkweed
Asclepias verticillata L.	Whorled Milkweed
Asclepias vestita Hook. & Arn.	woolly milkweed
Asclepias viridiflora Raf.	Green Comet Milkweed
Asparagus aethiopicus L.	Sprenger's asparagus fern
Asparagus asparagoides (L.) Druce	African asparagus fern
Asparagus officinalis L.	garden asparagus
Asparagus setaceus (Kunth) Jessop	common asparagus fern
Asphodelus fistulosus L.	onionweed
Aspicarpa longipes A. Gray	spreading asphead
Aspidotis californica (Hook.) Nutt. ex Copeland	California lacefern
Aspidotis densa (Brack.) Lellinger	Indian's dream
Asplenium dalhousiae Hook.	Countess Dalhousie's spleenwort
Asplenium exiguum Bedd.	little spleenwort
Asplenium palmeri Maxon	Palmer's spleenwort
Asplenium resiliens Kunze	blackstem spleenwort
Asplenium septentrionale (L.) Hoffm.	forked spleenwort
Asplenium trichomanes L.	maidenhair spleenwort
Asplenium vespertinum Maxon	western spleenwort
Astragalus acutirostris S. Watson	sharpkeel milkvetch
Astragalus albens Greene	Cushenbury Milkvetch
Astragalus allochrous A. Gray	halfmoon milkvetch
Astragalus amphioxys A. Gray	Crescent milkvetch
Astragalus ampullarius S. Watson	Gumbo Milkvetch
Astragalus argophyllus Nutt.	Silverleaf Milkvetch
Astragalus aridus A. Gray	annual desert milkvetch
Astragalus arizonicus A. Gray	Arizona milkvetch
Astragalus bernardinus M.E. Jones	San Bernardino Milkvetch
Astragalus bicristatus A. Gray	Twocrested Milkvetch
Astragalus brandegeei Porter	Brandegee's Milkvetch
Astragalus brauntonii Parish	Braunton's milkvetch
Astragalus calycosus Torr. ex S. Watson	Torrey's milkvetch

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