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7947 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
Abelmoschus esculentus (L.) Moench	Okra
Abies balsamea (L.) Mill.	Balsam Fir	✓
Abies concolor (Gord. & Glend.) Lindl. ex Hildebr.	White Fir
Abies grandis (Douglas ex D. Don) Lindl.	Grand Fir
Abies lasiocarpa (Hook.) Nutt.	Subalpine Fir
Abronia ameliae Lundell	Amelia's sand verbena
Abronia angustifolia Greene	Purple Sand Verbena
Abronia bigelovii Heimerl	Galisteo Sand Verbena
Abronia carletonii J.M. Coult. & Fisher	Carleton's sand verbena
Abronia elliptica A. Nelson	Fragrant White Sand Verbena
Abronia fragrans Nutt. ex Hook.	Snowball Sand Verbena
Abronia macrocarpa L.A. Galloway	Largefruit Sand Verbena
Abutilon abutiloides (Jacq.) Garcke ex Hochr.	shrubby Indian mallow
Abutilon berlandieri A. Gray ex S. Watson	Berlandier's Indian mallow
Abutilon fruticosum Guill. & Perr.	Texas Indian Mallow
Abutilon hulseanum (Torr. & A. Gray) Torr. ex A. Gray	mauve
Abutilon hypoleucum A. Gray	whiteleaf Indian mallow
Abutilon incanum (Link) Sweet	Pelotazo
Abutilon malacum S. Watson	yellow Indian mallow
Abutilon mollicomum (Willd.) Sweet	Sonoran Indian mallow
Abutilon parvulum A. Gray	dwarf Indian mallow
Abutilon theophrasti Medik.	Velvetleaf
Abutilon trisulcatum (Jacq.) Urb.	anglestem Indian mallow
Abutilon wrightii A. Gray	Wright's Indian mallow
Acaciella angustissima (Mill.) Britton & Rose	Prairie Acacia
Acalypha deamii (Weath.) H.E. Ahles	Deam's Mercury
Acalypha gracilens A. Gray	Slender Threeseed Mercury
Acalypha monococca (Engelm. ex A. Gray) Lill. W. Mill. & Gandhi	slender threeseed mercury
Acalypha monostachya Cav.	round copperleaf
Acalypha neomexicana Müll. Arg.	New Mexico copperleaf
Acalypha ostryifolia Riddell	Pineland Threeseed Mercury
Acalypha phleoides Cav.	shrubby copperleaf
Acalypha poiretii Spreng.	Poiret's copperleaf
Acalypha radians Torr.	cardinal's feather
Acalypha rhomboidea Raf.	Rhomboid Mercury	✓
Acalypha setosa A. Rich.	Cuban copperleaf
Acalypha virginica L.	Virginia Threeseed Mercury
Acanthocereus tetragonus (L.) Humm.	triangle cactus
Acer ×freemanii	Freeman Maple
Acer floridanum (Chapm.) Pax	Southern Sugar Maple
Acer ginnala Maxim.	Amur Maple
Acer glabrum Torr.	Rocky Mountain Maple
Acer grandidentatum Nutt.	bigtooth maple
Acer leucoderme Small	Chalk Maple
Acer negundo L.	Box Elder	✓
Acer nigrum Michx. f.	Black Maple
Acer platanoides L.	Norway Maple	✓
Acer rubrum L.	Red Maple	✓
Acer saccharinum L.	Silver Maple	✓
Acer saccharum Marshall	Sugar Maple	✓
Acer spicatum Lam.	Mountain Maple
Achillea alpina L.	Chinese yarrow
Achillea filipendulina Lam.	fernleaf yarrow
Achillea millefolium L.	Common Yarrow
Achillea nobilis L.	noble yarrow
Achillea ptarmica L.	Sneezeweed
Achyranthes aspera L.	devil's horsewhip
Acleisanthes angustifolia Torr.	Narrowleaf Moonpod
Acleisanthes anisophylla A. Gray	obliqueleaf trumpets
Acleisanthes chenopodioides (A. Gray) Standl.	Goosefoot Moonpod
Acleisanthes crassifolia A. Gray	Texas trumpets
Acleisanthes diffusa (A.Gray) R.A.Levin	Spreading Moonpod
Acleisanthes lanceolata (Wooton) R.A.Levin	Lanceleaf Moonpod
Acleisanthes longiflora A. Gray	angel's trumpets
Acleisanthes obtusa (Choisy) Standl.	Berlandier's trumpets
Acleisanthes wrightii (A. Gray) Benth. & Hook. f. ex Hemsl.	Wright's trumpets
Acmella repens (Walter) Rich.	Oppositeleaf Spotflower
Acmispon americanus (Nutt.) Rydb.	American Bird's-Foot Trefoil
Acmispon plebeius (Brandegee) Allred	New Mexico Bird's-Foot Trefoil
Acmispon wrightii (A.Gray) Brouillet	Wright's Deervetch
Aconitum columbianum Nutt.	Columbian monkshood
Acorus americanus (Raf.) Raf.	American Sweetflag
Acorus calamus L.	Calamus
Acourtia nana (A. Gray) Reveal & R.M. King	dwarf desertpeony
Acourtia runcinata (Lag. ex D. Don) B.L. Turner	featherleaf desertpeony
Acourtia wrightii (A. Gray) Reveal & R.M. King	brownfoot
Actaea pachypoda Elliott	White Baneberry
Actaea podocarpa DC.	Mountain Bugbane
Actaea racemosa L.	Black Baneberry
Actaea rubra (Aiton) Willd.	Red Baneberry
Adelia vaseyi (J.M. Coult.) Pax & K. Hoffm.	Vasey's wild lime
Adenocaulon bicolor Hook.	American trailplant
Adiantum aleuticum (Rupr.) Paris	Aleutian Maidenhair
Adiantum capillus-veneris L.	common maidenhair
Adiantum pedatum L.	Northern Maidenhair Fern
Adiantum tricholepis Fée	Fuzzy Maidenhair
Adlumia fungosa "(Aiton) Greene ex Britton	Allegheny Vine
Adonis aestivalis L.	summer pheasant's eye
Adonis annua L.	blooddrops
Adoxa moschatellina L.	muskroot
Aegilops cylindrica Host	Jointed Goatgrass
Aegopodium podagraria L.	Bishop's Goutweed	✓
Aeschynomene americana L.	shyleaf
Aeschynomene indica L.	Indian jointvetch
Aeschynomene rudis Benth.	zigzag jointvetch
Aeschynomene viscidula Michx.	sticky jointvetch
Aesculus glabra Willd.	Ohio Buckeye
Aesculus hippocastanum L.	horse chestnut
Aesculus pavia L.	red buckeye
Aethusa cynapium L.	Fool's Parsley
Agalinis aspera (Douglas ex Benth.) Britton	tall false foxglove
Agalinis auriculata (Michx.) S.F. Blake	earleaf false foxglove
Agalinis calycina Pennell	leoncita false foxglove
Agalinis densiflora (Benth.) S.F. Blake	Osage False Foxglove
Agalinis edwardsiana Pennell	Plateau False Foxglove
Agalinis fasciculata (Elliott) Raf.	Beach False Foxglove
Agalinis filicaulis (Benth.) Pennell	Jackson False Foxglove
Agalinis gattingeri (Small) Small	Roundstem False Foxglove
Agalinis harperi Pennell	coastal plain false foxglove
Agalinis heterophylla (Nutt.) Small ex Britton	prairie false foxglove
Agalinis homalantha Pennell	San Antonio false foxglove
Agalinis maritima (Raf.) Raf.	saltmarsh false foxglove
Agalinis navasotensis M. Dubrule & J. Canne-Hilliker	Navasota False Foxglove
Agalinis oligophylla Pennell	ridgestem false foxglove
Agalinis paupercula (A. Gray) Britton	smallflower false foxglove
Agalinis purpurea (L.) Pennell	Purple False Foxglove
Agalinis skinneriana (Alph. Wood) Britton	Skinner's False Foxglove
Agalinis strictifolia (Benth.) Pennell	stiffleaf false foxglove
Agalinis tenuifolia (Vahl) Raf.	Slenderleaf False Foxglove
Agalinis viridis (Small) Pennell	green false foxglove
Agastache cana (Hook.) Wooton & Standl.	mosquito plant
Agastache foeniculum (Pursh) Kuntze	Anise Hyssop
Agastache micrantha (A. Gray) Wooton & Standl.	white giant hyssop
Agastache nepetoides (L.) Kuntze	Yellow Giant Hyssop
Agastache pallidiflora (A. Heller) Rydb.	Bill Williams Mountain giant hyssop
Agastache rupestris (Greene) Standl.	threadleaf giant hyssop
Agastache scrophulariifolia (Willd.) Kuntze	Purple Giant Hyssop
Agastache urticifolia (Benth.) Kuntze	nettleleaf giant hyssop
Agave americana L.	American century plant
Agave lechuguilla Torr.	Lechuguilla
Agave longiflora (Rose) G.D.Rowley	Longflower Tuberose
Agave parryi Engelm.	Parry's agave
Agave univittata Haw.	McKelvey's century plant
Agave weberi Cels ex Poisson	Weber's century plant
Agdestis clematidea Moc. & Sessé ex DC.	rockroot
Ageratina altissima (L.) R.M. King & H. Rob.	White Snakeroot	✓
Ageratina aromatica (L.) Spach	Lesser Snakeroot
Ageratina havanensis (Kunth) R.M. King & H. Rob.	Havana Snakeroot
Ageratina herbacea (A. Gray) R.M. King & H. Rob.	fragrant 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
Ageratum conyzoides L.	tropical whiteweed
Agoseris aurantiaca (Hook.) Greene	orange agoseris
Agoseris glauca (Pursh) Raf.	Pale Agoseris
Agoseris parviflora (Nutt.) D.Dietr.	Steppe Agoseris
Agrimonia eupatoria L.	Churchsteeples
Agrimonia gryposepala Wallr.	tall hairy agrimony
Agrimonia microcarpa Wallr.	Smallfruit Agrimony
Agrimonia parviflora Aiton	Harvestlice
Agrimonia pubescens Wallr.	soft agrimony
Agrimonia rostellata Wallr.	beaked agrimony
Agrimonia striata Michx.	Roadside Agrimony
Agropyron cristatum (L.) Gaertn.	crested wheatgrass
Agropyron fragile (Roth) P. Candargy	Siberian Wheatgrass
Agrostemma brachyloba (Fenzl) Hammer	Narrow Corncockle
Agrostemma githago L.	Common Corncockle
Agrostis capillaris L.	colonial bentgrass
Agrostis elliottiana Schult.	Elliott's Bentgrass
Agrostis exarata Trin.	spike bentgrass
Agrostis gigantea Roth	Redtop
Agrostis hyemalis (Walter) Britton, Sterns & Poggenb.	Winter Bentgrass
Agrostis idahoensis Nash	Idaho bentgrass
Agrostis mertensii Trin.	Northern Bentgrass
Agrostis pallens Trin.	Seashore Bentgrass
Agrostis perennans (Walter) Tuck.	Upland Bentgrass
Agrostis scabra Willd.	Rough Bentgrass
Agrostis stolonifera L.	Creeping Bentgrass
Agrostis variabilis Rydb.	mountain bentgrass
Ailanthus altissima (Mill.) Swingle	Tree of Heaven
Aira caryophyllea L.	silver hairgrass
Aira elegans Willd. ex Roem. & Schult.	Annual Silver Hairgrass
Ajuga reptans L.	Bugleweed
Akebia quinata (Houtt.) Decne.	chocolate vine
Albizia julibrissin Durazz.	Persian Silktree	✓
Albizia lebbeck (L.) Benth.	Indian Siris
Alcea rosea L.	hollyhock
Alchemilla subcrenata Buser	Broadtooth Lady's Mantle
Aletes acaulis (Torr.) J.M. Coult. & Rose	stemless Indian parsley
Aletes humilis J.M. Coult. & Rose	Colorado Aletes
Aletris aurea Walter	golden colicroot
Aletris farinosa L.	White Colicroot
Alhagi maurorum Medik.	camelthorn
Aliciella leptomeria (A. Gray) J.M. Porter	sand gilia
Aliciella penstemonoides (M.E. Jones) J.M. Porter	Black Canyon Gilia
Aliciella pinnatifida (Nutt. ex A. Gray) J.M. Porter	Sticky Gilia
Alisma gramineum Lej.	narrowleaf water plantain
Alisma subcordatum Raf.	American Water Plantain
Alisma triviale Pursh	Northern Water Plantain
Alkekengi officinarum Moench	Strawberry Groundcherry
Allenrolfea occidentalis (S. Watson) Kuntze	Iodine Bush
Alliaria petiolata (M. Bieb.) Cavara & Grande	Garlic Mustard	✓
Allionia choisyi Standl.	Annual Windmills
Allionia incarnata L.	trailing windmills
Allium ampeloprasum L.	broadleaf wild leek
Allium bisceptrum S. Watson	twincrest onion
Allium brandegeei S. Watson	Brandegee's Onion
Allium brevistylum S. Watson	Shortstyle Onion
Allium canadense L.	Meadow Garlic
Allium cepa L.	garden onion
Allium cernuum Roth	Nodding Onion
Allium drummondii Regel	Drummond's Onion
Allium elmendorfii M.E. Jones ex Ownbey	Elmendorf's onion
Allium fibrillum M.E. Jones	Cuddy Mountain onion
Allium fistulosum L.	Welsh Onion
Allium geyeri S. Watson	Geyer's onion
Allium gooddingii Ownbey	Goodding's Onion
Allium kunthii G. Don	Kunth's onion
Allium macropetalum Rydb.	largeflower onion
Allium neapolitanum Cirillo	white garlic
Allium nevadense S. Watson	Nevada Onion
Allium perdulce S.V. Fraser	plains onion
Allium porrum L.	Garden Leek
Allium runyonii Ownbey	Runyon's onion
Allium sativum L.	Cultivated Garlic
Allium schoenoprasum L.	Chives
Allium simillimum L.F. Hend.	Simil Onion
Allium stellatum Fraser ex Ker Gawl.	autumn onion
Allium textile A. Nelson & J.F. Macbr.	Textile Onion
Allium tricoccum Aiton	Ramp
Allium tuberosum Rottler ex Spreng.	Chinese Chives
Allium vineale L.	Wild Garlic
Allowissadula holosericea (Scheele) D.M. Bates	Chisos Mountain false Indianmallow
Allowissadula lozanii (Rose) D.M. Bates	Lozano's false Indianmallow
Almutaster pauciflorus (Nutt.) Á. Löve & D. Löve	alkali marsh aster
Alnus glutinosa (L.) Gaertn.	European alder
Alnus incana (L.) Moench	Gray Alder
Alnus maritima (Marshall) Muhl. ex Nutt.	Seaside Alder
Alnus oblongifolia Torr.	Arizona alder
Alnus serrulata (Aiton) Willd.	Hazel Alder
Alnus viridis (Chaix) DC.	green alder
Aloe vera (L.) Burm. f.	Barbados aloe
Alopecurus aequalis Sobol.	Shortawn Foxtail
Alopecurus arundinaceus Poir.	creeping meadow foxtail
Alopecurus carolinianus Walter	Carolina foxtail
Alopecurus geniculatus L.	water foxtail
Alopecurus magellanicus Lam.	Alpine Meadow-Foxtail
Alopecurus myosuroides Huds.	Slender Meadow Foxtail
Alopecurus pratensis L.	meadow foxtail
Alophia drummondii (Graham) R.C. Foster	propeller flower
Aloysia gratissima (Gillies & Hook.) Troncoso	whitebrush
Aloysia macrostachya (Torr.) Moldenke	Rio Grande beebrush
Aloysia wrightii (A. Gray) A. Heller	Wright's beebrush
Alstroemeria pelegrina L.	Parrot-Lily
Alternanthera caracasana Kunth	Mat Chaff Flower
Alternanthera paronychioides A. St.-Hil.	Smooth Joyweed
Alternanthera philoxeroides (Mart.) Griseb.	alligatorweed
Alternanthera sessilis (L.) R. Br. ex DC.	sessile joyweed
Althaea armeniaca	Armenian Mallow
Althaea officinalis L.	common marshmallow
Alysicarpus ovalifolius (Schumach.) J. Léonard	alyce clover
Alyssum alyssoides (L.) L.	pale madwort
Alyssum desertorum Stapf	desert madwort
Alyssum murale Waldst. & Kit.	yellowtuft
Alyssum simplex Rudolphi	alyssum
Amaranthus acanthochiton Sauer	greenstripe
Amaranthus albus L.	Prostrate Pigweed
Amaranthus arenicola I.M. Johnst.	Sandhill Amaranth
Amaranthus australis (A. Gray) Sauer	southern 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 fimbriatus (Torr.) Benth. ex S. Watson	fringed amaranth
Amaranthus greggii S. Watson	Gregg's amaranth
Amaranthus hybridus L.	Slim Amaranth
Amaranthus hypochondriacus L.	Prince-of-Wales feather
Amaranthus palmeri S. Watson	Carelessweed
Amaranthus polygonoides L.	tropical amaranth
Amaranthus powellii S. Watson	Powell's Amaranth
Amaranthus retroflexus L.	redroot amaranth
Amaranthus scleropoides Uline & Bray	bonebract amaranth
Amaranthus spinosus L.	Spiny Amaranth
Amaranthus tamaulipensis Henrickson	Tamaulipas amaranth
Amaranthus torreyi (A. Gray) Benth. ex S. Watson	Torrey's amaranthus
Amaranthus tuberculatus (Moq.) Sauer	Roughfruit Amaranth
Amaranthus viridis L.	slender amaranth
Amaranthus wrightii S. Watson	Wright's amaranth
Amaryllis belladonna L.	belladonna lily
Amblyolepis setigera DC.	huisache daisy
Ambrosia acanthicarpa Hook.	Flatspine Bur Ragweed
Ambrosia artemisiifolia L.	Common Ragweed
Ambrosia bidentata Michx.	Lanceleaf Ragweed
Ambrosia cheiranthifolia A. Gray	Rio Grande ragweed
Ambrosia confertiflora DC.	weakleaf bur ragweed
Ambrosia grayi (A. Nelson) Shinners	Woollyleaf Bur Ragweed
Ambrosia linearis (Rydb.) Payne	Streaked Bur Ragweed
Ambrosia monogyra (Torr. & A.Gray) Strother & B.G.Baldwin	Singlewhorl Burrobrush
Ambrosia psilostachya DC.	Cuman Ragweed
Ambrosia tomentosa Nutt.	Skeletonleaf Bur Ragweed
Ambrosia trifida L.	Giant Ragweed
Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem.	Saskatoon serviceberry
Amelanchier arborea (Michx. f.) Fernald	Common Serviceberry
Amelanchier humilis Wiegand	low serviceberry
Amelanchier interior E.L. Nielsen	inland serviceberry
Amelanchier intermedia Spach	Serviceberry
Amelanchier laevis Wiegand	Allegheny Serviceberry
Amelanchier sanguinea (Pursh) DC.	roundleaf serviceberry
Amelanchier utahensis Koehne	Utah serviceberry
Amelichloa clandestina (Hack.) Arriaga & Barkworth	Mexican Ricegrass
Amianthium muscitoxicum (Walter) A. Gray	Flypoison
Ammannia auriculata Willd.	eared redstem
Ammannia coccinea Rottb.	valley redstem
Ammannia latifolia L.	Pink Redstem
Ammannia robusta Heer & Regel	grand redstem
Ammi majus L.	large bullwort
Ammoselinum butleri (Engelm. ex S. Watson) J.M. Coult. & Rose	Butler's Sandparsley
Ammoselinum popei Torr. & A. Gray	plains sandparsley
Amoreuxia wrightii A. Gray	Wright's yellowshow
Amorpha canescens Pursh	Lead Plant
Amorpha fruticosa L.	False Indigo Bush
Amorpha laevigata Nutt.	smooth false indigo
Amorpha nana Nutt.	dwarf false indigo
Amorpha nitens Boynt.	shining false indigo
Amorpha paniculata Torr. & A. Gray	Panicled False Indigo
Amorpha roemeriana Scheele	Roemer's false indigo
Ampelopsis cordata Michx.	Heartleaf Peppervine
Ampelopsis glandulosa (Wall.) Momiy.	Porcelain Berry
Amphiachyris amoena (Shinners) Solbrig	Texas Broomweed
Amphiachyris dracunculoides (DC.) Nutt.	Prairie Broomweed
Amphicarpaea bracteata (L.) Fernald	American Hogpeanut
Amsinckia lycopsoides Lehm.	Tarweed Fiddleneck
Amsinckia menziesii (Lehm.) A. Nelson & J.F. Macbr.	Menzies' fiddleneck
Amsonia ciliata Walter	fringed bluestar
Amsonia fugatei S.P. McLaughlin	San Antonio Bluestar
Amsonia hubrichtii Woodson	Hubricht's Bluestar
Amsonia longiflora Torr.	tubular bluestar
Amsonia ludoviciana Vail ex Small	Louisiana Bluestar
Amsonia palmeri A. Gray	Palmer's bluestar
Amsonia repens Shinners	creeping bluestar
Amsonia rigida Shuttlw. ex Small	stiff bluestar
Amsonia tabernaemontana Walter	Eastern Bluestar
Amsonia tharpii Woodson	feltleaf bluestar
Amyris madrensis S. Watson	mountain torchwood
Amyris texana (Buckley) P. Wilson	Texas torchwood
Anaphalis margaritacea (L.) Benth.	Western Pearly Everlasting
Anchusa arvensis (L.) M. Bieb.	small bugloss
Anchusa azurea Mill.	Italian Bugloss
Anchusa officinalis L.	common bugloss
Ancistrocactus scheeri (Salm-Dyck) Britton & Rose	Scheer's fishhook cactus
Andersonglossum virginianum (L.) J.I.Cohen	Wild Comfrey
Andromeda polifolia L.	bog rosemary
Andropogon capillipes Nash	chalky bluestem
Andropogon gerardii Vitman	Big Bluestem
Andropogon glomeratus (Walter) Britton, Sterns & Poggenb.	Bushy Bluestem
Andropogon gyrans Ashe	Elliott's bluestem
Andropogon hallii Hack.	sand bluestem
Andropogon liebmannii Hack.	Liebmann's Bluestem
Andropogon ternarius Michx.	Splitbeard Bluestem
Andropogon virginicus L.	Broomsedge Bluestem	✓
Androsace chamaejasme Wulfen	Sweetflower Rockjasmine
Androsace filiformis Retz.	Filiform Rockjasmine
Androsace occidentalis Pursh	western rockjasmine
Androsace septentrionalis L.	pygmyflower rockjasmine
Anemia mexicana Klotzsch	Mexican fern
Anemonastrum narcissiflorum (L.) Holub	Narcissus Anemone
Anemone berlandieri Pritz.	tenpetal thimbleweed
Anemone canadensis L.	Canadian anemone
Anemone caroliniana Walter	Carolina anemone
Anemone cylindrica A. Gray	Candle Anemone
Anemone edwardsiana Tharp	Edwards Plateau thimbleweed
Anemone lithophila Rydb.	Little Belt Mountain thimbleweed
Anemone multifida Poir.	Pacific Anemone
Anemone parviflora Michx.	smallflowered anemone
Anemone quinquefolia L.	wood anemone
Anemone tuberosa Rydb.	tuber anemone
Anemone virginiana L.	Tall Thimbleweed
Anemopsis californica (Nutt.) Hook. & Arn.	yerba mansa
Anethum graveolens L.	dill
Angelica ampla A. Nelson	Giant Angelica
Angelica arguta Nutt.	Lyall's angelica
Angelica atropurpurea L.	Purplestem Angelica
Angelica dawsonii S. Watson	Dawson's angelica
Angelica grayi (J.M. Coult. & Rose) J.M. Coult. & Rose	Gray's Angelica
Angelica pinnata S. Watson	Small-Leaf Angelica
Angelica roseana L.F. Hend.	rose angelica
Angelica venenosa (Greenway) Fernald	hairy angelica
Anisacanthus quadrifidus (Vahl) Nees	Wright's desert honeysuckle
Anoda cristata (L.) Schltdl.	Crested Anoda
Anoda pentaschista A. Gray	field anoda
Anredera cordifolia (Ten.) Steenis	heartleaf madeiravine
Anredera vesicaria (Lam.) C.F. Gaertn.	Texas madeiravine
Antennaria alpina (L.) Gaertn.	alpine pussytoes
Antennaria anaphaloides Rydb.	pearly pussytoes
Antennaria aromatica Evert	scented pussytoes
Antennaria corymbosa E.E. Nelson	flat-top pussytoes
Antennaria dimorpha (Nutt.) Torr. & A. Gray	low pussytoes
Antennaria flagellaris (A. Gray) A. Gray	Whip Pussytoes
Antennaria howellii Greene	Howell's pussytoes
Antennaria lanata (Hook.) Greene	woolly pussytoes
Antennaria luzuloides Torr. & A. Gray	Rush Pussytoes
Antennaria marginata Greene	whitemargin pussytoes
Antennaria media Greene	Rocky Mountain pussytoes
Antennaria microphylla Rydb.	littleleaf pussytoes
Antennaria monocephala DC.	Pygmy Pussytoes
Antennaria neglecta Greene	Field Pussytoes
Antennaria parlinii Fernald	Parlin's pussytoes
Antennaria parvifolia Nutt.	small-leaf pussytoes
Antennaria plantaginifolia (L.) Richardson	Woman's Tobacco
Antennaria pulcherrima (Hook.) Greene	showy pussytoes
Antennaria racemosa Hook.	raceme pussytoes
Antennaria rosea Greene	rosy pussytoes
Antennaria rosulata Rydb.	Kaibab Pussytoes
Antennaria umbrinella Rydb.	umber pussytoes
Anthaenantia rufa (Nutt.) Schult.	Purple Silkyscale
Anthaenantia villosa (Michx.) P. Beauv.	Green Silkyscale
Anthemis arvensis L.	corn chamomile
Anthemis cotula L.	stinking chamomile
Anthoxanthum odoratum L.	Sweet Vernalgrass
Anthriscus caucalis M. Bieb.	Bur Chervil
Anthriscus sylvestris (L.) Hoffm.	Wild Chervil
Anthyllis vulneraria L.	Common Kidneyvetch
Anticlea elegans (Pursh) Rydb.	Mountain Deathcamas
Anticlea occidentalis (A.Gray) Zomlefer & Judd	Western Featherbells
Anticlea virescens (Kunth) Rydb.	Green Deathcamas
Antigonon leptopus Hook. & Arn.	coral vine
Antiphytum heliotropioides A. DC.	Mexican saucerflower
Antirrhinum majus L.	garden snapdragon
Anulocaulis leiosolenus (Torr.) Standl.	southwestern ringstem
Apacheria chiricahuensis C.T. Mason	apachebush
Apera interrupta (L.) P. Beauv.	Dense Silky Bentgrass
Apera spica-venti (L.) P. Beauv.	loose silkybent
Aphanostephus pilosus Buckley	Hairy Dozedaisy
Aphanostephus ramosissimus DC.	plains dozedaisy
Aphanostephus riddellii Torr. & A. Gray	Riddell's dozedaisy
Aphanostephus skirrhobasis (DC.) Trel.	Arkansas dozedaisy
Apios americana Medik.	groundnut
Apium graveolens L.	wild celery
Aplectrum hyemale (Muhl. ex Willd.) Torr.	Adam and Eve
Apocynum ×floribundum	Intermediate Dogbane
Apocynum androsaemifolium L.	Spreading Dogbane
Apocynum cannabinum L.	Hemp Dogbane
Apodanthera undulata A. Gray	melon loco
Apteria aphylla (Nutt.) Barnhart ex Small	nodding nixie
Aquilegia brevistyla Hook.	Smallflower Columbine
Aquilegia canadensis L.	Red Columbine	✓
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 flavescens S. Watson	yellow columbine
Aquilegia formosa Fisch. ex DC.	Western Columbine
Aquilegia jonesii Parry	Jones' columbine
Aquilegia laramiensis A. Nelson	Laramie Columbine
Aquilegia pubescens Coville	Sierra Columbine
Aquilegia saximontana Rydb.	Rocky Mountain Blue Columbine
Aquilegia vulgaris L.	European Columbine
Arabidopsis lyrata (L.) O'Kane & Al-Shehbaz	Lyrate Rockcress
Arabidopsis thaliana (L.) Heynh.	mouseear cress
Arabis eschscholtziana Andrz.	Eschscholtz's hairy rockcress
Arabis nuttallii B.L. Rob.	Nuttall's rockcress
Arabis pycnocarpa M.Hopkins	Slender Rock Cress
Arachis hypogaea L.	peanut
Aralia elata (Miq.) Seem.	Japanese Angelica Tree
Aralia hispida Vent.	bristly sarsaparilla
Aralia humilis Cav.	Arizona Spikenard
Aralia nudicaulis L.	wild sarsaparilla
Aralia racemosa L.	American Spikenard
Aralia spinosa L.	Devil's Walkingstick
Arbutus xalapensis Kunth	Texas madrone
Arceuthobium americanum Nutt. ex Engelm.	American dwarf mistletoe
Arceuthobium apachecum Hawksw. & Wiens	Apache 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 laricis (Piper) H. St. John	larch dwarf mistletoe
Arceuthobium pusillum Peck	eastern dwarf mistletoe
Arceuthobium vaginatum (Willd.) J. Presl	pineland dwarf mistletoe
Arctium lappa L.	greater burdock
Arctium minus Bernh.	Lesser Burdock
Arctium tomentosum Mill.	woolly burdock
Arctostaphylos pungens Kunth	pointleaf manzanita
Arctostaphylos uva-ursi (L.) Spreng.	Kinnikinnick
Ardisia crenata Sims	hen's eyes
Ardisia japonica (Thunb.) Blume	Japanese Marlberry
Arenaria benthamii Fenzl ex Torr. & A. Gray	hilly sandwort
Arenaria lanuginosa (Michx.) Rohrb.	spreading sandwort
Arenaria serpyllifolia L.	thymeleaf sandwort
Arethusa bulbosa L.	dragon's mouth
Argemone aenea G.B. Ownbey	golden pricklypoppy
Argemone albiflora Hornem.	Bluestem Pricklypoppy
Argemone aurantiaca G.B. Ownbey	Texas pricklypoppy
Argemone chisosensis G.B. Ownbey	Chisos Mountain pricklypoppy
Argemone hispida A. Gray	Rough Pricklypoppy
Argemone mexicana L.	Mexican Pricklypoppy
Argemone pleiacantha Greene	southwestern pricklypoppy
Argemone polyanthemos (Fedde) G.B. Ownbey	crested pricklypoppy
Argemone sanguinea Greene	red pricklypoppy
Argemone squarrosa Greene	hedgehog pricklypoppy
Argentina anserina (L.) Rydb.	Silverweed Cinquefoil
Argyrochosma fendleri (Kunze) Windham	Fendler's false cloak fern
Argyrochosma incana (C. Presl) Windham	hairy false cloak fern
Argyrochosma limitanea (Maxon) Windham	southwestern false cloak fern
Argyrochosma microphylla (Mett. ex Kuhn) Windham	small-leaf false cloak fern
Argythamnia argyraea Cory	silky silverbush
Argythamnia humilis (Engelm. & A. Gray) Müll. Arg.	low silverbush
Argythamnia mercurialina (Nutt.) Müll. Arg.	tall silverbush
Argythamnia neomexicana Müll. Arg.	New Mexico silverbush

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