|
|
|
|
Plant List
Indexed Alphabetically by Common Name
B
For a list of plants indexed by Scientific Name, click here
--Please wait while data loads--
| National Common Name | Scientific Name with Author | Symbol | Family | |
| babybonnets | Coursetia DC. | COURS | Fabaceae | |
| baccaurea | Baccaurea Lour. | BACCA | Euphorbiaceae | |
| baccaurea | Baccaurea ramiflora Lour. | BARA4 | Euphorbiaceae | |
| baccharis | Baccharis L. | BACCH | Asteraceae | |
| bachmanniomyces lichen | Bachmanniomyces D. Hawksw. | BACHM | Uncertain Lichen Family | |
| bachmanniomyces lichen | Bachmanniomyces uncialicola (Zopf) D. Hawksw. | BAUN5 | Uncertain Lichen Family | |
| Bachman's jelly lichen | Collema bachmanianum (Fink) Degel. | COBA8 | Collemataceae | |
| Backhous fuchsia | Correa backhousiana Hook. | COBA13 | Rutaceae | |
| Back's sedge | Carex backii Boott | CABA3 | Cyperaceae | |
| bactris palm | Bactris Jacq. ex Scop. | BACTR2 | Arecaceae | |
| bactrospora lichen | Bactrospora A. Massal. | BACTR | Opegraphaceae | |
| bactrospora lichen | Bactrospora dryina (Ach.) A. Massal. | BADR | Opegraphaceae | |
| bactrospora lichen | Bactrospora patellarioides (Nyl.) Vainio | BAPA6 | Opegraphaceae | |
| baeckea | Baeckea frutescens L. | BAFR4 | Myrtaceae | |
| baeckea | Baeckea L. | BAECK | Myrtaceae | |
| bagflower | Clerodendrum thompsoniae Balf. f. | CLTH | Verbenaceae | |
| Baglietto'a dotted lichen | Bacidia bagliettoana (A. Massal. & De Not.) Jatta | BABA3 | Bacidiaceae | |
| Bahama baybean | Canavalia nitida (Cav.) Piper | CANI7 | Fabaceae | |
| Bahama manjack | Cordia bahamensis Urban | COBA4 | Boraginaceae | |
| Bahama pigeonplum | Coccoloba tenuifolia L. | COTE9 | Polygonaceae | |
| bahia | Bahia Lag. | BAHIA | Asteraceae | |
| Bahia piassaba palm | Attalea funifera C. Martius ex Sprengel | ATFU | Arecaceae | |
| Baikal sedge | Carex sabulosa Turcz. ex Kunth | CASA5 | Cyperaceae | |
| Bailey's rabbitbrush | Chrysothamnus baileyi Woot. & Standl. | CHBA11 | Asteraceae | |
| Bailey's sedge | Carex baileyi Britt. | CABA7 | Cyperaceae | |
| baillonella | Baillonella Pierre | BAILL | Sapotaceae | |
| Baker's cryptantha | Cryptantha bakeri (Greene) Payson | CRBA4 | Boraginaceae | |
| Baker's hawksbeard | Crepis bakeri Greene | CRBA2 | Asteraceae | |
| Baker's hawksbeard | Crepis bakeri Greene ssp. bakeri | CRBAB | Asteraceae | |
| Baker's manzanita | Arctostaphylos bakeri Eastw. | ARBA4 | Ericaceae | |
| Baker's manzanita | Arctostaphylos bakeri Eastw. ssp. bakeri | ARBAB | Ericaceae | |
| Baker's stickyseed | Blennosperma bakeri Heiser | BLBA | Asteraceae | |
| balanites | Balanites Del. | BALAN | Zygophyllaceae | |
| bald brome | Bromus racemosus L. | BRRA2 | Poaceae | |
| Bald Mountain milkvetch | Astragalus umbraticus Sheldon | ASUM3 | Fabaceae | |
| Baldwin's flatsedge | Cyperus croceus Vahl | CYCR6 | Cyperaceae | |
| ball saltbush | Atriplex fruticulosa Jepson | ATFR | Chenopodiaceae | |
| ballhead sandwort | Arenaria congesta Nutt. | ARCO5 | Caryophyllaceae | |
| ballhead sandwort | Arenaria congesta Nutt. var. congesta | ARCOC4 | Caryophyllaceae | |
| ballhead sandwort | Arenaria congesta Nutt. var. crassula Maguire | ARCOC3 | Caryophyllaceae | |
| ballhead sandwort | Arenaria congesta Nutt. var. prolifera Maguire | ARCOP | Caryophyllaceae | |
| ballhead sandwort | Arenaria congesta Nutt. var. simulans Maguire | ARCOS | Caryophyllaceae | |
| ballmustard | Calepina Adans. | CALEP | Brassicaceae | |
| balloonplant | Asclepias physocarpa (E. Mey.) Schlechter | ASPH2 | Asclepiadaceae | |
| balloonpod milkvetch | Astragalus whitneyi Gray | ASWH | Fabaceae | |
| balloonpod milkvetch | Astragalus whitneyi Gray var. lenophyllus (Rydb.) Barneby | ASWHL | Fabaceae | |
| balloonpod milkvetch | Astragalus whitneyi Gray var. sonneanus (Greene) Jepson | ASWHS2 | Fabaceae | |
| balloonpod milkvetch | Astragalus whitneyi Gray var. whitneyi | ASWHW | Fabaceae | |
| balloonvine | Cardiospermum L. | CARDI2 | Sapindaceae | |
| balsam fir | Abies balsamea (L.) P. Mill. | ABBA | Pinaceae | |
| balsam fir | Abies balsamea (L.) P. Mill. var. balsamea | ABBAB | Pinaceae | |
| balsam torchwood | Amyris balsamifera L. | AMBA2 | Rutaceae | |
| balsam tree | Colophospermum mopane (Kirk ex Benth.) Kirk ex J. Léonard | COMO14 | Fabaceae | |
| balsam-leaf calycera | Calycera balsamitifolia A. Rich. | CABA22 | Calyceraceae | |
| balsamo | Bulnesia sarmienti Lorentz ex Griseb. | BUSA6 | Zygophyllaceae | |
| balsamroot | Balsamorhiza Nutt. | BALSA | Asteraceae | |
| baltimora | Baltimora L. | BALTI | Asteraceae | |
| Baltzell's sedge | Carex baltzellii Chapman ex Dewey | CABA8 | Cyperaceae | |
| bamboo | Bambusa arundinacea (Retz.) Willd. | BAAR8 | Poaceae | |
| bamboo | Bambusa longispiculata Gamble ex Brandis | BALO4 | Poaceae | |
| bamboo | Bambusa Schreb. | BAMBU | Poaceae | |
| bamboo | Bambusa tulda Roxb. | BATU | Poaceae | |
| bamboo orchid | Arundina Blume | ARUND | Orchidaceae | |
| bamboo orchid | Arundina graminifolia (D. Don) Hochr. | ARGR6 | Orchidaceae | |
| bandanna of the Everglades | Canna flaccida Salisb. | CAFL11 | Cannaceae | |
| baneberry | Actaea L. | ACTAE | Ranunculaceae | |
| baneberry | Actaea spicata L. | ACSP10 | Ranunculaceae | |
| banisteriopsis | Banisteriopsis C.B. Robins. ex Small | BANIS | Malpighiaceae | |
| bank catclaw | Acacia redolens Maslin | ACRE9 | Fabaceae | |
| banksia | Banksia L. f., nom. cons. | BANKS | Proteaceae | |
| baobab | Adansonia digitata L. | ADDI3 | Bombacaceae | |
| baphia | Baphia Lodd. | BAPHI | Fabaceae | |
| Barbados aloe | Aloe vera (L.) Burm. f. | ALVE2 | Aloaceae | |
| barbas de indio | Andropogon bicornis L. | ANBI | Poaceae | |
| barbed goatgrass | Aegilops triuncialis L. | AETR | Poaceae | |
| barbella moss | Barbella Fleisch. in Broth. | BARBE | Meteoriaceae | |
| barberry | Berberis L. | BERBE | Berberidaceae | |
| barberry hawthorn | Crataegus berberifolia Torr. & Gray | CRBE2 | Rosaceae | |
| Barber's hawksbeard | Crepis runcinata (James) Torr. & Gray ssp. barberi (Greenm.) Babcock & Stebbins | CRRUB | Asteraceae | |
| barbieria | Barbieria DC. | BARBI | Fabaceae | |
| barbula moss | Barbula agraria Hedw. | BAAG | Pottiaceae | |
| barbula moss | Barbula amplexifolia (Mitt.) Jaeg. | BAAM3 | Pottiaceae | |
| barbula moss | Barbula coreensis (Card.) Saito | BACO3 | Pottiaceae | |
| barbula moss | Barbula eustegia Card. & Thér. | BAEU | Pottiaceae | |
| barbula moss | Barbula Hedw. | BARBU2 | Pottiaceae | |
| barbula moss | Barbula indica (Hook.) Spreng. in Steud. | BAIN9 | Pottiaceae | |
| barbula moss | Barbula indica (Hook.) Spreng. in Steud. var. gregaria (Mitt.) Zand. | BAING | Pottiaceae | |
| barbula moss | Barbula indica (Hook.) Spreng. in Steud. var. indica | BAINI | Pottiaceae | |
| barbula moss | Barbula unguiculata Hedw. | BAUN6 | Pottiaceae | |
| barbwire grass | Cymbopogon refractus (R. Br.) A. Camus | CYRE | Poaceae | |
| barleriola | Barleriola Oerst. | BARLE2 | Acanthaceae | |
| barley Mitchell grass | Astrebla pectinata (Lindl.) F. Muell. [excluded] | ASPE20 | Poaceae | |
| Barneby's Indian paintbrush | Castilleja scabrida Eastw. var. barnebyana (Eastw.) N. Holmgren | CASCB3 | Scrophulariaceae | |
| Barneby's thistle | Cirsium barnebyi Welsh & Neese | CIBA | Asteraceae | |
| barranca brush | Ceanothus verrucosus Nutt. | CEVE2 | Rhamnaceae | |
| Barratt's sedge | Carex barrattii Schwein. & Torr. | CABA9 | Cyperaceae | |
| Barrelier's bugloss | Anchusa barrelieri (All.) Vitman | ANBA3 | Boraginaceae | |
| barren milkvetch | Astragalus cusickii Gray var. sterilis (Barneby) Barneby | ASCUS2 | Fabaceae | |
| Barren Valley collomia | Collomia renacta E. Joyal | CORE10 | Polemoniaceae | |
| Barrier Range wattle | Acacia beckleri Tindale | ACBE6 | Fabaceae | |
| barringtonia | Barringtonia J.R. & G. Forst | BARRI | Lecythidaceae | |
| Barr's milkvetch | Astragalus barrii Barneby | ASBA | Fabaceae | |
| Bartlett daisy | Bartlettia scaposa Gray | BASC | Asteraceae | |
| bartlettia | Bartlettia Gray | BARTL | Asteraceae | |
| bartlettina | Bartlettina R.M. King & H. Robinson | BARTL2 | Asteraceae | |
| bartramia moss | Bartramia glauca Lor. | BAGL5 | Bartramiaceae | |
| bartramia moss | Bartramia Hedw. | BARTR2 | Bartramiaceae | |
| bartramia moss | Bartramia ithyphylla Brid. | BAIT70 | Bartramiaceae | |
| bartramia moss | Bartramia microstoma Mitt. | BAMI8 | Bartramiaceae | |
| bartramia moss | Bartramia pomiformis Hedw. | BAPO70 | Bartramiaceae | |
| bartramia moss | Bartramia stricta Brid. | BAST6 | Bartramiaceae | |
| bartramia moss | Bartramia subulata Bruch & Schimp. in B.S.G. | BASU6 | Bartramiaceae | |
| bartramidula moss | Bartramidula Bruch & Schimp. in B.S.G. | BARTR4 | Bartramiaceae | |
| bartramiopsis moss | Bartramiopsis Kindb. | BARTR3 | Polytrichaceae | |
| Bartram's ixia | Calydorea coelestina (Bartr.) Goldblatt & Henrich | CACO72 | Iridaceae | |
| basalt milkvetch | Astragalus filipes Torr. ex Gray | ASFI | Fabaceae | |
| basalt springparsley | Cymopterus basalticus M.E. Jones | CYBA3 | Apiaceae | |
| basella | Basella L. | BASEL | Basellaceae | |
| basil thyme | Acinos arvensis (Lam.) Dandy | ACAR2 | Lamiaceae | |
| basin bellflower | Campanula reverchonii Gray | CARE3 | Campanulaceae | |
| basin big sagebrush | Artemisia tridentata Nutt. ssp. tridentata | ARTRT | Asteraceae | |
| basin cryptantha | Cryptantha ambigua (Gray) Greene | CRAM3 | Boraginaceae | |
| basin saltbush | Atriplex tridentata Kuntze | ATTR3 | Chenopodiaceae | |
| basin yellow cryptantha | Cryptantha confertiflora (Greene) Payson | CRCO12 | Boraginaceae | |
| basiphyllaea | Basiphyllaea Schlechter | BASIP | Orchidaceae | |
| basket of gold | Aurinia saxatilis (L.) Desv. | AUSA | Brassicaceae | |
| basketplant | Callisia fragrans (Lindl.) Woods. | CAFR6 | Commelinaceae | |
| basora | Cordia angustifolia (West ex Willd.) Roemer & J.A. Schultes | COAN11 | Boraginaceae | |
| bastard copperleaf | Acalypha chamaedryfolia (Lam.) Muell.-Arg. | ACCH2 | Euphorbiaceae | |
| bastard draba milkvetch | Astragalus drabelliformis Barneby | ASDR2 | Fabaceae | |
| bastard milkvetch | Astragalus tegetarioides M.E. Jones | ASTE4 | Fabaceae | |
| bastard mulga | Acacia stowardii Maiden | ACST8 | Fabaceae | |
| bastard redwood | Chrysophyllum argenteum Jacq. | CHAR6 | Sapotaceae | |
| bastard toadflax | Comandra Nutt. | COMAN | Santalaceae | |
| bastard toadflax | Comandra umbellata (L.) Nutt. | COUM | Santalaceae | |
| bastard toadflax | Comandra umbellata (L.) Nutt. ssp. umbellata | COUMU | Santalaceae | |
| bastardia | Bastardia Kunth | BASTA | Malvaceae | |
| Batesburg hawthorn | Crataegus munda Beadle | CRMU4 | Rosaceae | |
| bats in the belfry | Campanula trachelium L. | CATR4 | Campanulaceae | |
| Bauer's anacolia moss | Anacolia menziesii (Turn.) Par. var. baueri (Hampe) Flow. | ANMEB | Bartramiaceae | |
| bauhinia | Bauhinia fassoglensis Kotschy ex Schweinf. | BAFA | Fabaceae | |
| bauhinia | Bauhinia L. | BAUHI | Fabaceae | |
| Bay County Indian plaintain | Arnoglossum album L.C. Anders. | ARAL30 | Asteraceae | |
| baybean | Canavalia rosea (Sw.) DC. | CARO26 | Fabaceae | |
| beach false foxglove | Agalinis fasciculata (Ell.) Raf. | AGFA2 | Scrophulariaceae | |
| beach saltbush | Atriplex leucophylla (Moq.) D. Dietr. | ATLE2 | Chenopodiaceae | |
| beach sand verbena | Abronia neurophylla Standl. | ABNE | Nyctaginaceae | |
| beach sandmat | Chamaesyce degeneri (Sherff) Croizat & Deg. | CHDE6 | Euphorbiaceae | |
| beach sedge | Carex silicea Olney | CASI6 | Cyperaceae | |
| beach sensitive pea | Chamaecrista chamaecristoides (Colladon) Greene | CHCH3 | Fabaceae | |
| beach sensitive pea | Chamaecrista chamaecristoides (Colladon) Greene var. cruziana (Britt. & Rose) Irwin & Barneby | CHCHC | Fabaceae | |
| beach sheoak | Casuarina equisetifolia L. | CAEQ | Casuarinaceae | |
| beach suncup | Camissonia cheiranthifolia (Hornem. ex Spreng.) Raimann | CACH13 | Onagraceae | |
| beach suncup | Camissonia cheiranthifolia (Hornem. ex Spreng.) Raimann ssp. cheiranthifolia | CACHC | Onagraceae | |
| beach suncup | Camissonia cheiranthifolia (Hornem. ex Spreng.) Raimann ssp. suffruticosa (S. Wats.) Raven | CACHS | Onagraceae | |
| beach wormwood | Artemisia pycnocephala (Less.) DC. | ARPY3 | Asteraceae | |
| beachgrass | Ammophila Host | AMMOP | Poaceae | |
| beaded lipfern | Cheilanthes wootonii Maxon | CHWO | Pteridaceae | |
| Beadle's hawthorn | Crataegus beadlei Ashe | CRBE5 | Rosaceae | |
| beadtree | Adenanthera L. | ADENA | Fabaceae | |
| beaked agrimony | Agrimonia rostellata Wallr. | AGRO3 | Rosaceae | |
| beaked clarkia | Clarkia rostrata W.S. Davis | CLRO2 | Onagraceae | |
| beaked dodder | Cuscuta rostrata Shuttlw. ex Engelm. & Gray | CURO | Cuscutaceae | |
| beaked hawksbeard | Crepis vesicaria L. | CRVE3 | Asteraceae | |
| beaked hawksbeard | Crepis vesicaria L. ssp. taraxacifolia (Thuill.) Thellung | CRVET | Asteraceae | |
| beaked hazelnut | Corylus cornuta Marsh. | COCO6 | Betulaceae | |
| beaked hazelnut | Corylus cornuta Marsh. var. cornuta | COCOC2 | Betulaceae | |
| beaked sedge | Carex rostrata Stokes | CARO6 | Cyperaceae | |
| beaked snailfern | Cochlidium rostratum (Hook.) Maxon ex C. Christens. | CORO4 | Grammitidaceae | |
| bear garlic | Allium ursinum L. | ALUR | Liliaceae | |
| Bear Mountain milkweed | Asclepias scaposa Vail | ASSC9 | Asclepiadaceae | |
| bear sedge | Carex ursina Dewey | CAUR | Cyperaceae | |
| Bear Valley milkvetch | Astragalus leucolobus S. Wats. ex M.E. Jones | ASLE11 | Fabaceae | |
| Bear Valley sandwort | Arenaria ursina B.L. Robins. | ARUR | Caryophyllaceae | |
| bearded beggarticks | Bidens aristosa (Michx.) Britt. | BIAR | Asteraceae | |
| bearded cryptantha | Cryptantha barbigera (Gray) Greene | CRBA5 | Boraginaceae | |
| bearded flatsedge | Cyperus squarrosus L. | CYSQ | Cyperaceae | |
| bearded grasspink | Calopogon barbatus (Walt.) Ames | CABA | Orchidaceae | |
| bearded milkvetch | Astragalus villosus Michx. | ASVI6 | Fabaceae | |
| bearded shorthusk | Brachyelytrum erectum (Schreb. ex Spreng.) Beauv. | BRER2 | Poaceae | |
| bearded swallow-wort | Cynanchum barbigerum (Scheele) Shinners | CYBA | Asclepiadaceae | |
| beardgrass | Bothriochloa Kuntze | BOTHR | Poaceae | |
| bearpoppy | Arctomecon Torr. & Frém. | ARCTO | Papaveraceae | |
| bear's breech | Acanthus mollis L. | ACMO8 | Acanthaceae | |
| Beath's milkvetch | Astragalus beathii C.L. Porter | ASBE2 | Fabaceae | |
| Beatley's milkvetch | Astragalus beatleyae Barneby | ASBE5 | Fabaceae | |
| Beaumont's cup lichen | Cladonia beaumontii (Tuck.) Vainio | CLBE3 | Cladoniaceae | |
| beautiful hawthorn | Crataegus pulcherrima Ashe | CRPU9 | Rosaceae | |
| beautiful Indian paintbrush | Castilleja pulchella Rydb. | CAPU10 | Scrophulariaceae | |
| beautiful rockcress | Arabis pulchra M.E. Jones ex S. Wats. | ARPU2 | Brassicaceae | |
| beautiful rockcress | Arabis pulchra M.E. Jones ex S. Wats. var. gracilis M.E. Jones | ARPUG | Brassicaceae | |
| beautiful rockcress | Arabis pulchra M.E. Jones ex S. Wats. var. pallens M.E. Jones | ARPUP | Brassicaceae | |
| beautiful rockcress | Arabis pulchra M.E. Jones ex S. Wats. var. pulchra | ARPUP2 | Brassicaceae | |
| beautyberry | Callicarpa L. | CALLI2 | Verbenaceae | |
| beautyhead | Baltimora recta L. | BARE2 | Asteraceae | |
| beavertail grass | Calochortus caeruleus (Kellogg) S. Wats. | CACA98 | Liliaceae | |
| Bebb's sedge | Carex bebbii Olney ex Fern. | CABE2 | Cyperaceae | |
| Beckett's water trumpet | Cryptocoryne beckettii Thwaites ex Trimen. | CRBE10 | Araceae | |
| Beckhaus' dotted lichen | Bacidia beckhausii Korber | BABE | Bacidiaceae | |
| Beck's watermarigold | Bidens beckii Torr. ex Spreng. | BIBE2 | Asteraceae | |
| Beckwith's milkvetch | Astragalus beckwithii Torr. & Gray | ASBE3 | Fabaceae | |
| Beckwith's milkvetch | Astragalus beckwithii Torr. & Gray var. beckwithii | ASBEB | Fabaceae | |
| Beckwith's milkvetch | Astragalus beckwithii Torr. & Gray var. purpureus M.E. Jones | ASBEP | Fabaceae | |
| Beckwith's milkvetch | Astragalus beckwithii Torr. & Gray var. sulcatus Barneby | ASBES | Fabaceae | |
| Beckwith's rockcress | Arabis beckwithii S. Wats. | ARBE2 | Brassicaceae | |
| Bedford Springs hawthorn | Crataegus ignave Beadle | CRIG2 | Rosaceae | |
| bedstraw | Cruciata P. Mill. | CRUCI2 | Rubiaceae | |
| bee wattle | Acacia sphaerocephala Schlecht. & Cham. | ACSP4 | Fabaceae | |
| beebrush | Aloysia Juss. | ALOYS | Verbenaceae | |
| Beechey's bamboo | Bambusa beecheyana Munro | BABE2 | Poaceae | |
| beechleaf croton | Croton betulinus Vahl | CRBE4 | Euphorbiaceae | |
| beegum onion | Allium hoffmanii Ownbey | ALHO | Liliaceae | |
| beehive cactus | Coryphantha (Engelm.) Lem. | CORYP | Cactaceae | |
| beet | Beta adanensis A. Pamukc. ex Aellen | BEAD | Chenopodiaceae | |
| beet | Beta atriplicifolia Rouy | BEAT | Chenopodiaceae | |
| beet | Beta L. | BETA | Chenopodiaceae | |
| beet | Beta lomatogona Fischer & C. Meyer | BELO | Chenopodiaceae | |
| beet | Beta nana Boiss. & Heldr. | BENA2 | Chenopodiaceae | |
| beet | Beta patellaris Moq. | BEPA2 | Chenopodiaceae | |
| beet | Beta patula Aiton | BEPA3 | Chenopodiaceae | |
| beet | Beta trigyna Waldst. & Kit. | BETR4 | Chenopodiaceae | |
| beet | Beta vulgaris L. ssp. macrocarpa (Guss.) Thell. | BEVUM2 | Chenopodiaceae | |
| befaria | Bejaria Mutis ex L. f. | BEJAR | Ericaceae | |
| beggarticks | Bidens L. | BIDEN | Asteraceae | |
| begonia | Begonia L. | BEGON | Begoniaceae | |
| beilschmiedia | Beilschmiedia Nees | BEILS | Lauraceae | |
| bejuco de santiago | Aristolochia trilobata L. | ARTR5 | Aristolochiaceae | |
| belah | Casuarina lepidophloia F. Muell. | CALE28 | Casuarinaceae | |
| belamcanda | Belamcanda Adans. | BELAM | Iridaceae | |
| belladonna | Atropa bella-donna L. | ATBE | Solanaceae | |
| belladonna | Atropa L. | ATROP | Solanaceae | |
| belladonna lily | Amaryllis belladonna L. | AMBE3 | Liliaceae | |
| bellemerea lichen | Bellemerea cinereorufescens (Ach.) Clauzade & Roux | BECI3 | Porpidiaceae | |
| bellemerea lichen | Bellemerea diamarta (Ach.) Hafellner & Roux | BEDI3 | Porpidiaceae | |
| bellemerea lichen | Bellemerea Hafellner & Roux | BELLE | Porpidiaceae | |
| bellemerea lichen | Bellemerea sanguinea (Krempelh.) Hafellner & Roux | BESA5 | Porpidiaceae | |
| bellemerea lichen | Bellemerea subsorediza (Lynge) R. Sant. | BESU2 | Porpidiaceae | |
| bellflower | Campanula L. | CAMPA | Campanulaceae | |
| bellflower | Campanulastrum Small | CAMPA2 | Campanulaceae | |
| bellflower | Codonopsis pilosula (Franch.) Nannf. | COPI8 | Campanulaceae | |
| bellis | Bellis L. | BELLI | Asteraceae | |
| bellisima grande | Antigonon guatemalense Meisn. | ANGU | Polygonaceae | |
| belonia lichen | Belonia Korber ex Nyl. | BELON | Gyalectaceae | |
| belonia lichen | Belonia russula Korber ex Nyl. | BERU2 | Gyalectaceae | |
| bengal coffee | Coffea benghalensis Heyne ex Schultes | COBE6 | Rubiaceae | |
| Bengal kino | Butea monosperma (Lam.) Taubert | BUMO5 | Fabaceae | |
| benincasa | Benincasa Savi | BENIN | Cucurbitaceae | |
| benitoa | Benitoa Keck | BENIT | Asteraceae | |
| benitoa | Benitoa occidentalis (Hall) Keck | BEOC | Asteraceae | |
| bensoniella | Bensoniella Morton | BENSO | Saxifragaceae | |
| bent milkvetch | Astragalus inflexus Dougl. ex Hook. | ASIN5 | Fabaceae | |
| bent sedge | Carex styloflexa Buckl. | CAST9 | Cyperaceae | |
| bentawn flatsedge | Cyperus reflexus Vahl | CYRE2 | Cyperaceae | |
| bentflower fiddleneck | Amsinckia lunaris J.F. Macbr. | AMLU | Boraginaceae | |
| bentflower milkvetch | Astragalus vexilliflexus Sheldon | ASVE5 | Fabaceae | |
| bentflower milkvetch | Astragalus vexilliflexus Sheldon var. vexilliflexus | ASVEV2 | Fabaceae | |
| bentgrass | Agrostis castellana Boiss. & Reuter | AGCA11 | Poaceae | |
| bentgrass | Agrostis L. | AGROS2 | Poaceae | |
| Bentham cypress | Cupressus lusitanica Mill. var. benthamii (Endl.) Carriere | CULUB2 | Cupressaceae | |
| Bentham's cornel | Cornus capitata Wall. ex Roxb. | COCA45 | Cornaceae | |
| Bentley's coralroot | Corallorhiza bentleyi Freudenstein | COBE7 | Orchidaceae | |
| bentspur orchid | Campylocentrum Benth. | CAMPY2 | Orchidaceae | |
| bergamot orange | Citrus ×aurantium L. ssp. bergamia (Risso & Poit.) Wight & Arn. ex Engler | CIAUB | Rutaceae | |
| bergia | Bergia L. | BERGI | Elatinaceae | |
| Bering chickweed | Cerastium beeringianum Cham. & Schlecht. | CEBE2 | Caryophyllaceae | |
| Bering chickweed | Cerastium beeringianum Cham. & Schlecht. ssp. beeringianum | CEBEB2 | Caryophyllaceae | |
| Bering chickweed | Cerastium beeringianum Cham. & Schlecht. ssp. beeringianum var. beeringianum | CEBEB4 | Caryophyllaceae | |
| Bering chickweed | Cerastium beeringianum Cham. & Schlecht. ssp. beeringianum var. grandiflorum (Fenzl) Hultén | CEBEG3 | Caryophyllaceae | |
| Bering chickweed | Cerastium beeringianum Cham. & Schlecht. ssp. earlei (Rydb.) Hultén | CEBEE | Caryophyllaceae | |
| Bering reindeer lichen | Cladina arbuscula (Wallr.) Hale & Culb. ssp. beringiana (Ahti) N. S. Golubk. | CLARB | Cladoniaceae | |
| Bering Sea sedge | Carex microchaeta Holm ssp. nesophila (Holm) E. Murr. | CAMIN | Cyperaceae | |
| berkheya | Berkheya Ehrh. | BERKH | Asteraceae | |
| Berks County hawthorn | Crataegus bona Sarg. | CRBO3 | Rosaceae | |
| Berlandier's fiddlewood | Citharexylum berlandieri B.L. Robins. | CIBE | Verbenaceae | |
| Berlandier's Indian mallow | Abutilon berlandieri Gray ex S. Wats. | ABBE | Malvaceae | |
| Berlandier's sundrops | Calylophus berlandieri Spach | CABE6 | Onagraceae | |
| Berlandier's sundrops | Calylophus berlandieri Spach ssp. berlandieri | CABEB2 | Onagraceae | |
| Berlandier's sundrops | Calylophus berlandieri Spach ssp. pinifolius (Engelm. ex Gray) Towner | CABEP2 | Onagraceae | |
| Berlandier's trumpets | Acleisanthes obtusa (Choisy) Standl. | ACOB2 | Nyctaginaceae | |
| Bermudagrass | Cynodon dactylon (L.) Pers. | CYDA | Poaceae | |
| Bermudagrass | Cynodon L.C. Rich. | CYNOD | Poaceae | |
| Berteron's rattlebox | Crotalaria berteriana DC. | CRBE8 | Fabaceae | |
| Berteron's sandmat | Chamaesyce berteriana (Balbis ex Spreng.) Millsp. | CHBE6 | Euphorbiaceae | |
| bertholletia | Bertholletia Humb. & Bonpl. | BERTH | Lecythidaceae | |
| bestia moss | Bestia Broth. | BESTI | Brachytheciaceae | |
| bestia moss | Bestia longipes (Sull. & Lesq.) Broth. | BELO2 | Brachytheciaceae | |
| betel palm | Areca catechu L. | ARCA41 | Arecaceae | |
| betonyleaf brickellbush | Brickellia betonicifolia Gray | BRBE | Asteraceae | |
| betonyleaf thoroughwort | Conoclinium betonicifolium (P. Mill.) King & H.E. Robins. | COBE4 | Asteraceae | |
| Beyrich threeawn | Aristida beyrichiana Trin. & Rupr. | ARBE7 | Poaceae | |
| biatora lichen | Biatora botryosa Fr. | BIBO | Bacidiaceae | |
| biatora lichen | Biatora Fr. | BIATO2 | Bacidiaceae | |
| biatora lichen | Biatora helvola (Korber) Hellbom | BIHE5 | Bacidiaceae | |
| biatorella lichen | Biatorella cyphalea (Tuck.) Zahlbr. | BICY2 | Biatorellaceae | |
| biatorella lichen | Biatorella De Not. | BIATO3 | Biatorellaceae | |
| biatorella lichen | Biatorella hemisphaerica Anzi | BIHE6 | Biatorellaceae | |
| biatorella lichen | Biatorella plicata H. Magn. | BIPL | Biatorellaceae | |
| Bicknell's milkvetch | Astragalus consobrinus (Barneby) Welsh | ASCO16 | Fabaceae | |
| Bicknell's sedge | Carex bicknellii Britt. | CABI3 | Cyperaceae | |
| Bicknell's sedge | Carex opaca (F.J. Herm.) P. Rothr. & Reznicek | CAOP5 | Cyperaceae | |
| bicolored spleenwort | Asplenium heterochroum Kunze | ASHE3 | Aspleniaceae | |
| biddy-biddy | Acaena novae-zelandiae Kirk | ACNO7 | Rosaceae | |
| biennial wormwood | Artemisia biennis Willd. | ARBI2 | Asteraceae | |
| biennial wormwood | Artemisia biennis Willd. var. biennis | ARBIB | Asteraceae | |
| biennial wormwood | Artemisia biennis Willd. var. diffusa Dorn | ARBID | Asteraceae | |
| Big Bend ringstem | Anulocaulis eriosolenus (Gray) Standl. | ANER | Nyctaginaceae | |
| big blue birch | Betula ×caerulea Blanch. (pro sp.) var. grandis Blanch. (pro nm.) | BECAG | Betulaceae | |
| big bluestem | Andropogon gerardii Vitman | ANGE | Poaceae | |
| big carpetgrass | Axonopus furcatus (Flueggé) A.S. Hitchc. | AXFU | Poaceae | |
| big chickweed | Cerastium fontanum Baumg. ssp. vulgare (Hartman) Greuter & Burdet | CEFOV2 | Caryophyllaceae | |
| big devils beggartick | Bidens vulgata Greene | BIVU | Asteraceae | |
| big quakinggrass | Briza maxima L. | BRMA | Poaceae | |
| big sagebrush | Artemisia tridentata Nutt. | ARTR2 | Asteraceae | |
| big sagebrush | Artemisia tridentata Nutt. ssp. parishii (Gray) Hall & Clements | ARTRP2 | Asteraceae | |
| big sagebrush | Artemisia tridentata Nutt. ssp. spiciformis (Osterhout) Kartesz & Gandhi | ARTRS2 | Asteraceae | |
| big sagebrush | Artemisia tridentata Nutt. ssp. xericensis Winward ex R. Rosentreter & R. Kelsey | ARTRX | Asteraceae | |
| big saltbush | Atriplex lentiformis (Torr.) S. Wats. | ATLE | Chenopodiaceae | |
| big saltbush | Atriplex lentiformis (Torr.) S. Wats. ssp. lentiformis | ATLEL | Chenopodiaceae | |
| big sandbur | Cenchrus myosuroides Kunth | CEMY | Poaceae | |
| big spore andreaeobryum moss | Andreaeobryum macrosporum Steere & B. Murr. | ANMA18 | Andreaeobryaceae | |
| big spore cracked lichen | Acarospora macrospora (Hepp) Bagl. | ACMA10 | Acarosporaceae | |
| big tarweed | Blepharizonia plumosa (Kellogg) Greene | BLPL | Asteraceae | |
| big tarweed | Blepharizonia plumosa (Kellogg) Greene ssp. plumosa | BLPLP | Asteraceae | |
| big tarweed | Blepharizonia plumosa (Kellogg) Greene ssp. viscida Keck | BLPLV | Asteraceae | |
| big western bittercress | Cardamine occidentalis (S. Wats. ex B.L. Robins.) T.J. Howell | CAOC | Brassicaceae | |
| bigberry manzanita | Arctostaphylos glauca Lindl. | ARGL4 | Ericaceae | |
| Bigelow sage | Artemisia bigelovii Gray | ARBI3 | Asteraceae | |
| Bigelow's amaranth | Amaranthus bigelovii Uline & Bray | AMBI | Amaranthaceae | |
| Bigelow's bahia | Bahia bigelovii Gray | BABI2 | Asteraceae | |
| Bigelow's beggarticks | Bidens bigelovii Gray | BIBI | Asteraceae | |
| Bigelow's beggarticks | Bidens bigelovii Gray var. bigelovii | BIBIB2 | Asteraceae | |
| Bigelow's bristlehead | Carphochaete bigelovii Gray | CABI6 | Asteraceae | |
| Bigelow's desertgrass | Blepharidachne bigelovii (S. Wats.) Hack. | BLBI | Poaceae | |
| Bigelow's false willow | Baccharis bigelovii Gray | BABI | Asteraceae | |
| Bigelow's leather flower | Clematis bigelovii Torr. | CLBI2 | Ranunculaceae | |
| Bigelow's onion | Allium bigelovii S. Wats. | ALBI | Liliaceae | |
| Bigelow's sedge | Carex bigelowii Torr. ex Schwein. | CABI5 | Cyperaceae | |
| Bigelow's thoroughwort | Chromolaena bigelovii (Gray) King & H.E. Robins. | CHBI3 | Asteraceae | |
| Bigelow's tickseed | Coreopsis bigelovii (Gray) Hall | COBI | Asteraceae | |
| bigflower agoseris | Agoseris grandiflora (Nutt.) Greene | AGGR | Asteraceae | |
| big-flower broom | Chamaecytisus supinus (L.) Link | CHSU22 | Fabaceae | |
| bigflower pawpaw | Asimina obovata (Willd.) Nash | ASOB6 | Annonaceae | |
| bigfruit dodder | Cuscuta megalocarpa Rydb. | CUME4 | Cuscutaceae | |
| bigfruit hawthorn | Crataegus macrosperma Ashe | CRMA3 | Rosaceae | |
| bighead dustymaiden | Chaenactis macrantha D.C. Eat. | CHMA | Asteraceae | |
| bighead knapweed | Centaurea macrocephala Puschk. ex Willd. | CEMA9 | Asteraceae | |
| bigleaf maple | Acer macrophyllum Pursh | ACMA3 | Aceraceae | |
| bigleaf sedge | Carex amplifolia Boott | CAAM10 | Cyperaceae | |
| bignay | Antidesma bunius (L.) Sprengel | ANBU3 | Euphorbiaceae | |
| bignonia | Bignonia L. | BIGNO | Bignoniaceae | |
| bigpod ceanothus | Ceanothus megacarpus Nutt. | CEME | Rhamnaceae | |
| bigpod ceanothus | Ceanothus megacarpus Nutt. var. megacarpus | CEMEM2 | Rhamnaceae | |
| bigpod lady's nightcap | Bonamia ovalifolia (Torr.) Hallier f. | BOOV2 | Convolvulaceae | |
| bigroot springparsley | Cymopterus macrorhizus Buckl. | CYMA | Apiaceae | |
| bigseed alfalfa dodder | Cuscuta indecora Choisy | CUIN | Cuscutaceae | |
| bigseed alfalfa dodder | Cuscuta indecora Choisy var. bifida Yuncker | CUINB | Cuscutaceae | |
| bigseed alfalfa dodder | Cuscuta indecora Choisy var. indecora | CUINI | Cuscutaceae | |
| bigseed dodder | Cuscuta indecora Choisy var. longisepala Yuncker | CUINL | Cuscutaceae | |
| bigseed dodder | Cuscuta indecora Choisy var. neuropetala (Engelm.) A.S. Hitchc. | CUINN | Cuscutaceae | |
| bigtooth maple | Acer grandidentatum Nutt. | ACGR3 | Aceraceae | |
| bigtooth maple | Acer grandidentatum Nutt. var. grandidentatum | ACGRG | Aceraceae | |
| bilimbi | Averrhoa bilimbi L. | AVBI | Oxalidaceae | |
| Bill Williams Mountain giant hyssop | Agastache pallidiflora (Heller) Rydb. | AGPA | Lamiaceae | |
| Bill Williams Mountain giant hyssop | Agastache pallidiflora (Heller) Rydb. ssp. neomexicana (Briq.) Lint & Epling | AGPAN | Lamiaceae | |
| Bill Williams Mountain giant hyssop | Agastache pallidiflora (Heller) Rydb. ssp. neomexicana (Briq.) Lint & Epling var. havardii (Gray) R.W. Sanders | AGPAH3 | Lamiaceae | |
| Bill Williams Mountain giant hyssop | Agastache pallidiflora (Heller) Rydb. ssp. neomexicana (Briq.) Lint & Epling var. neomexicana (Briq.) R.W. Sanders | AGPAN2 | Lamiaceae | |
| Bill Williams Mountain giant hyssop | Agastache pallidiflora (Heller) Rydb. ssp. pallidiflora | AGPAP2 | Lamiaceae | |
| Bill Williams Mountain giant hyssop | Agastache pallidiflora (Heller) Rydb. ssp. pallidiflora var. gilensis R.W. Sanders | AGPAG3 | Lamiaceae | |
| Bill Williams Mountain giant hyssop | Agastache pallidiflora (Heller) Rydb. ssp. pallidiflora var. greenei (Briq.) R.W. Sanders | AGPAG4 | Lamiaceae | |
| Bill Williams Mountain giant hyssop | Agastache pallidiflora (Heller) Rydb. ssp. pallidiflora var. pallidiflora | AGPAP4 | Lamiaceae | |
| Billarder's bryum moss | Bryum billarderi Schwaegr. | BRBI5 | Bryaceae | |
| billbergia | Billbergia Thunb. | BILLB | Bromeliaceae | |
| Billings' sedge | Carex trisperma Dewey var. billingsii Knight | CATRB | Cyperaceae | |
| bindweed | Convolvulus L. | CONVO | Convolvulaceae | |
| Bingham's false bindweed | Calystegia sepium (L.) R. Br. ssp. binghamiae (Greene) Brummitt | CASEB | Convolvulaceae | |
| birch | Betula L. | BETUL | Betulaceae | |
| birchleaf mountain mahogany | Cercocarpus montanus Raf. var. glaber (S. Wats.) F.L. Martin | CEMOG | Rosaceae | |
| bird spiderflower | Cleome ?ornithopodioides L. | CLOR2 | Capparaceae | |
| birdbill dayflower | Commelina dianthifolia Delile | CODI4 | Commelinaceae | |
| birdbill dayflower | Commelina dianthifolia Delile var. dianthifolia | CODID | Commelinaceae | |
| birdbill dayflower | Commelina dianthifolia Delile var. longispatha (Torr.) Brashier | CODIL | Commelinaceae | |
| birdbill woodoats | Chasmanthium ornithorhynchum (Steud.) Yates | CHOR3 | Poaceae | |
| birdflower | Crotalaria cunninghamii R. Br. | CRCU7 | Fabaceae | |
| birdfoot sagebrush | Artemisia pedatifida Nutt. | ARPE6 | Asteraceae | |
| birdnest fern | Asplenium polyodon G. Forst. var. nitidulum (Skottsberg) Morton | ASPON | Aspleniaceae | |
| birdnest fern | Asplenium polyodon G. Forst. var. sectum (Hbd.) Morton | ASPOS | Aspleniaceae | |
| birdnest fern | Asplenium polyodon G. Forst. var. subcaudatum (Skottsberg) Morton | ASPOS2 | Aspleniaceae | |
| birdnest milkvetch | Astragalus nidularius Barneby | ASNI2 | Fabaceae | |
| bird-of-paradise shrub | Caesalpinia gilliesii (Wallich ex Hook.) Wallich ex D. Dietr. | CAGI | Fabaceae | |
| bird's-beak | Cordylanthus Nutt. ex Benth. | CORDY | Scrophulariaceae | |
| birdwing fern | Campyloneurum latum T. Moore | CALA28 | Polypodiaceae | |
| birdwing treefern | Cyathea borinquena (Maxon) Domin | CYBO3 | Cyatheaceae | |
| birdwood grass | Cenchrus setiger Vahl | CESE10 | Poaceae | |
| birthwort | Aristolochia clematitis L. | ARCL | Aristolochiaceae | |
| bishop | Bifora Hoffmann | BIFOR | Apiaceae | |
| bishop's goutweed | Aegopodium podagraria L. | AEPO | Apiaceae | |
| bishop's hat | Astrophytum ornatum (DC.) Britton & Rose | ASOR9 | Cactaceae | |
| bishop's milkvetch | Astragalus episcopus S. Wats. | ASEP | Fabaceae | |
| bishop's milkvetch | Astragalus episcopus S. Wats. var. episcopus | ASEPE | Fabaceae | |
| bishop's milkvetch | Astragalus episcopus S. Wats. var. lancearius (Gray) Isely | ASEPL | Fabaceae | |
| bishopwood | Bischofia Blume | BISCH | Euphorbiaceae | |
| bitter orange | Citrus limetta Risso | CILI2 | Rutaceae | |
| bitter snakewood | Condalia globosa I.M. Johnston | COGL | Rhamnaceae | |
| bitter snakewood | Condalia globosa I.M. Johnston var. pubescens I.M. Johnston | COGLP | Rhamnaceae | |
| bittercress | Cardamine L. | CARDA | Brassicaceae | |
| bitternut hickory | Carya cordiformis (Wangenh.) K. Koch | CACO15 | Juglandaceae | |
| Bitterroot milkvetch | Astragalus scaphoides (M.E. Jones) Rydb. | ASSC4 | Fabaceae | |
| bittersweet | Celastrus L. | CELAS | Celastraceae | |
| bituminaria | Bituminaria Heister ex Fabr. | BITUM | Fabaceae | |
| bixa | Bixa L. | BIXA | Bixaceae | |
| black alpine sedge | Carex nigricans C.A. Mey. | CANI2 | Cyperaceae | |
| black baneberry | Actaea racemosa L. | ACRA7 | Ranunculaceae | |
| black bugbane | Actaea racemosa L. var. racemosa | ACRAR | Ranunculaceae | |
| black calabash | Amphitecna latifolia (P. Mill.) A.H. Gentry | AMLA4 | Bignoniaceae | |
| Black Canyon gilia | Aliciella penstemonoides (M.E. Jones) J.M. Porter | ALPE11 | Polemoniaceae | |
| black cutch | Acacia catechu (L. f.) Willd. [excluded] | ACCA21 | Fabaceae | |
| black damar | Canarium strictum Roxb. | CAST46 | Burseraceae | |
| black disc lichen | Buellia nigra (Fink) Sheard | BUNI2 | Physciaceae | |
| black edge sedge | Carex nigromarginata Schwein. | CANI3 | Cyperaceae | |
| black flatsedge | Cyperus niger Ruiz & Pavón | CYNI2 | Cyperaceae | |
| black garlic | Allium nigrum L. | ALNI | Liliaceae | |
| black golf club moss | Catoscopium nigritum (Hedw.) Brid. | CANI15 | Catoscopiaceae | |
| black grama | Bouteloua eriopoda (Torr.) Torr. | BOER4 | Poaceae | |
| black hawthorn | Crataegus douglasii Lindl. | CRDO2 | Rosaceae | |
| black hickory | Carya texana Buckl. | CATE9 | Juglandaceae | |
| black horehound | Ballota nigra L. | BANI | Lamiaceae | |
| black horehound | Ballota nigra L. var. alba (L.) Sm. | BANIA | Lamiaceae | |
| black horehound | Ballota nigra L. var. foetida (Hayek) Vis. | BANIF2 | Lamiaceae | |
| black horehound | Ballota nigra L. var. nigra | BANIN | Lamiaceae | |
| black mangrove | Avicennia africana P. Beauv. | AVAF | Verbenaceae | |
| black mangrove | Avicennia germinans (L.) L. | AVGE | Verbenaceae | |
| black maple | Acer nigrum Michx. f. | ACNI5 | Aceraceae | |
| black mustard | Brassica nigra (L.) W.D.J. Koch | BRNI | Brassicaceae | |
| black nicker | Caesalpinia monensis Britt. | CAMO14 | Fabaceae | |
| Black Rock wild cabbage | Caulanthus barnebyi Rollins & P. Holmgren | CABA11 | Brassicaceae | |
| black sagebrush | Artemisia nova A. Nels. | ARNO4 | Asteraceae | |
| black sedge | Carex nova Bailey | CANO3 | Cyperaceae | |
| black she-oak | Allocasuarina littoralis (Salisb.) L. A. S. Johnson | ALLI5 | Casuarinaceae | |
| black spleenwort | Asplenium adiantum-nigrum L. | ASAD | Aspleniaceae | |
| black wattle | Acacia mearnsii de Wildeman | ACME80 | Fabaceae | |
| blackandwhite sedge | Carex albonigra Mackenzie | CAAL6 | Cyperaceae | |
| blackberry lily | Belamcanda chinensis (L.) DC. | BECH | Iridaceae | |
| blackbrush | Coleogyne ramosissima Torr. | CORA | Rosaceae | |
| blackbrush acacia | Acacia rigidula Benth. | ACRI | Fabaceae | |
| blackbrush wattle | Acacia anegadensis Britt. [excluded] | ACAN4 | Fabaceae | |
| Blackfoot River evening-primrose | Camissonia andina (Nutt.) Raven | CAAN14 | Onagraceae | |
| blackfoot sandmat | Chamaesyce angusta (Engelm.) Small | CHAN5 | Euphorbiaceae | |
| blackfruit dogwood | Cornus sessilis Torr. ex Dur. | COSE3 | Cornaceae | |
| blackroot sedge | Carex elynoides Holm | CAEL3 | Cyperaceae | |
| black-sage | Cordia polycephala (Lam.) I.M. Johnston | COPO3 | Boraginaceae | |
| blackstem spleenwort | Asplenium resiliens Kunze | ASRE | Aspleniaceae | |
| blackwood | Acacia melanoxylon R. Br. ex Ait. f. | ACME | Fabaceae | |
| blackwood | Acacia penninervis Sieber ex DC. | ACPE10 | Fabaceae | |
| bladder senna | Colutea arborescens L. | COAR6 | Fabaceae | |
| bladderpod spiderflower | Cleome isomeris Greene | CLIS | Capparaceae | |
| bladder-senna | Colutea istria Mill. | COIS2 | Fabaceae | |
| Blakley's spineflower | Chorizanthe blakleyi Hardham | CHBL | Polygonaceae | |
| Blanchard's hawthorn | Crataegus irrasa Sarg. | CRIR2 | Rosaceae | |
| Blasdale bentgrass | Agrostis blasdalei A.S. Hitchc. | AGBL | Poaceae | |
| blechum | Blechum P. Br. | BLECH2 | Acanthaceae | |
| blepharipappus | Blepharipappus Hook. | BLEPH2 | Asteraceae | |
| blepharizonia | Blepharizonia Greene | BLEPH3 | Asteraceae | |
| blessed thistle | Cnicus benedictus L. | CNBE | Asteraceae | |
| bletia | Bletia Ruiz & Pavón | BLETI | Orchidaceae | |
| bletilla | Bletilla Reichenb. f. | BLETI2 | Orchidaceae | |
| blighia | Blighia Koenig | BLIGH | Sapindaceae | |
| blindia moss | Blindia Bruch & Schimp. in B.S.G. | BLIND2 | Seligeriaceae | |
| Blind's bryum moss | Bryum blindii Bruch & Schimp. in B.S.G. | BRBL | Bryaceae | |
| blister sedge | Carex vesicaria L. | CAVE6 | Cyperaceae | |
| blister sedge | Carex vesicaria L. var. distenta Fries | CAVED | Cyperaceae | |
| blister sedge | Carex vesicaria L. var. jejuna Fern. | CAVEJ | Cyperaceae | |
| blister sedge | Carex vesicaria L. var. monile (Tuckerman) Fern. | CAVEM2 | Cyperaceae | |
| blister sedge | Carex vesicaria L. var. raeana (Boott) Fern. | CAVER | Cyperaceae | |
| blister sedge | Carex vesicaria L. var. vesicaria | CAVEV2 | Cyperaceae | |
| blite goosefoot | Chenopodium capitatum (L.) Aschers. | CHCA4 | Chenopodiaceae | |
| Blodgett's silverbush | Argythamnia blodgettii (Torr.) Chapman | ARBL2 | Euphorbiaceae | |
| Blodgett's swallow-wort | Cynanchum blodgettii (Gray) Shinners | CYBL | Asclepiadaceae | |
| blooddrops | Adonis annua L. | ADAN | Ranunculaceae | |
| bloodflower | Asclepias curassavica L. | ASCU | Asclepiadaceae | |
| bloodtwig dogwood | Cornus sanguinea L. | COSA81 | Cornaceae | |
| blow wives | Achyrachaena mollis Schauer | ACMO2 | Asteraceae | |
| blow wives | Achyrachaena Schauer | ACHYR | Asteraceae | |
| blue birch | Betula ×caerulea Blanch. (pro sp.) [papyrifera × populifolia] | BECA4 | Betulaceae | |
| blue birch | Betula ×caerulea Blanch. (pro sp.) var. caerulea | BECAC | Betulaceae | |
| blue bugle | Ajuga genevensis L. | AJGE | Lamiaceae | |
| blue cohosh | Caulophyllum thalictroides (L.) Michx. | CATH2 | Berberidaceae | |
| Blue Diamond cholla | Cylindropuntia ×multigeniculata (Clokey) Backeberg (pro sp.) [echinocarpa × whipplei] | CYMU11 | Cactaceae | |
| blue eyed Mary | Collinsia Nutt. | COLLI | Scrophulariaceae | |
| blue funnel lily | Androstephium caeruleum (Scheele) Greene | ANCA45 | Liliaceae | |
| blue gem | Craterostigma plantagineum Hochst. | CRPL5 | Scrophulariaceae | |
| blue giant hyssop | Agastache foeniculum (Pursh) Kuntze | AGFO | Lamiaceae | |
| blue grama | Bouteloua gracilis (Willd. ex Kunth) Lag. ex Griffiths | BOGR2 | Poaceae | |
| blue leadwood | Ceratostigma plumbaginoides Bunge | CEPL2 | Plumbaginaceae | |
| blue limestone columbine | Aquilegia jonesii Parry var. elatior (Standl.) Boothman | AQJOE | Ranunculaceae | |
| blue maidencane | Amphicarpum purshii Kunth | AMPU6 | Poaceae | |
| blue mistflower | Conoclinium coelestinum (L.) DC. | COCO13 | Asteraceae | |
| Blue Mountain milkvetch | Astragalus reventus Gray | ASRE5 | Fabaceae | |
| Blue Mountain onion | Allium dictuon St. John | ALDI3 | Liliaceae | |
| blue rattlesnake | Crotalaria verrucosa L. | CRVE5 | Fabaceae | |
| Blue Ridge bittercress | Cardamine flagellifera O.E. Schulz | CAFL13 | Brassicaceae | |
| Blue Ridge bittercress | Cardamine flagellifera O.E. Schulz var. flagellifera | CAFLF6 | Brassicaceae | |
| Blue Ridge bittercress | Cardamine flagellifera O.E. Schulz var. hugeri (Small) Rollins | CAFLH | Brassicaceae | |
| Blue Ridge horsebalm | Collinsonia serotina Walt. | COSE11 | Lamiaceae | |
| Blue Ridge sedge | Carex lucorum Willd. ex Link | CALU17 | Cyperaceae | |
| Blue Ridge sedge | Carex lucorum Willd. ex Link var. austrolucorum J. Rettig | CALUA2 | Cyperaceae | |
| Blue Ridge sedge | Carex lucorum Willd. ex Link var. lucorum | CALUL | Cyperaceae | |
| blue sedge | Carex glaucodea Tuckerman ex Olney | CAGL6 | Cyperaceae | |
| blue threeawn | Aristida purpurea Nutt. var. nealleyi (Vasey) Allred | ARPUN | Poaceae | |
| blue waterhyssop | Bacopa caroliniana (Walt.) B.L. Robins. | BACA | Scrophulariaceae | |
| blue waxweed | Cuphea viscosissima Jacq. | CUVI | Lythraceae | |
| blue wild indigo | Baptisia australis (L.) R. Br. ex Ait. f. | BAAU | Fabaceae | |
| blue wild indigo | Baptisia australis (L.) R. Br. ex Ait. f. var. aberrans (Larisey) M. Mendenhall | BAAUA2 | Fabaceae | |
| blue wild indigo | Baptisia australis (L.) R. Br. ex Ait. f. var. australis | BAAUA | Fabaceae | |
| blue wild indigo | Baptisia australis (L.) R. Br. ex Ait. f. var. minor (Lehm.) Fern. | BAAUM | Fabaceae | |
| blue windflower | Anemone oregana Gray | ANOR | Ranunculaceae | |
| blue windflower | Anemone oregana Gray var. oregana | ANORO | Ranunculaceae | |
| blue woodruff | Asperula arvensis L. | ASAR2 | Rubiaceae | |
| bluebead | Clintonia borealis (Ait.) Raf. | CLBO3 | Liliaceae | |
| bluebead | Clintonia Raf. | CLINT | Liliaceae | |
| bluebell bellflower | Campanula rotundifolia L. | CARO2 | Campanulaceae | |
| blueberry hawthorn | Crataegus brachyacantha Sarg. & Engelm. | CRBR | Rosaceae | |
| bluebill | Clematis pitcheri Torr. & Gray | CLPI | Ranunculaceae | |
| bluebill | Clematis pitcheri Torr. & Gray var. dictyota (Greene) Dennis | CLPID | Ranunculaceae | |
| bluebill | Clematis pitcheri Torr. & Gray var. pitcheri | CLPIP | Ranunculaceae | |
| blueblossom | Ceanothus thyrsiflorus Eschsch. | CETH | Rhamnaceae | |
| bluegreen saltbush | Atriplex nummularia Lindl. | ATNU | Chenopodiaceae | |
| bluehearts | Buchnera L. | BUCHN | Scrophulariaceae | |
| bluejoint | Calamagrostis canadensis (Michx.) Beauv. | CACA4 | Poaceae | |
| bluejoint | Calamagrostis canadensis (Michx.) Beauv. var. canadensis | CACAC10 | Poaceae | |
| bluejoint | Calamagrostis canadensis (Michx.) Beauv. var. langsdorfii (Link) Inman | CACAL3 | Poaceae | |
| bluemink | Ageratum houstonianum P. Mill. | AGHO3 | Asteraceae | |
| bluepod rockcress | Arabis glaucovalvula M.E. Jones | ARGL2 | Brassicaceae | |
| bluestar | Amsonia Walt. | AMSON | Apocynaceae | |
| bluestem | Andropogon gayanus Kunth | ANGA3 | Poaceae | |
| bluestem | Andropogon L. | ANDRO2 | Poaceae | |
| bluestem pricklypoppy | Argemone albiflora Hornem. | ARAL3 | Papaveraceae | |
| bluestem pricklypoppy | Argemone albiflora Hornem. ssp. albiflora | ARALA2 | Papaveraceae | |
| bluestem pricklypoppy | Argemone albiflora Hornem. ssp. texana G.B. Ownbey | ARALT | Papaveraceae | |
| bluethread | Burmannia L. | BURMA | Burmanniaceae | |
| bluethread | Burmannia ledermannii Jonk. | BULE5 | Burmanniaceae | |
| blumea | Blumea lacera (Burman f.) DC. | BLLA3 | Asteraceae | |
| blunt broom sedge | Carex tribuloides Wahlenb. | CATR7 | Cyperaceae | |
| blunt broom sedge | Carex tribuloides Wahlenb. var. sangamonensis Clokey | CATRS2 | Cyperaceae | |
| blunt broom sedge | Carex tribuloides Wahlenb. var. tribuloides | CATRT2 | Cyperaceae | |
| blunt chaff flower | Achyranthes mutica Gray | ACMU2 | Amaranthaceae | |
| bluntleaf silverbush | Argythamnia stahlii Urban | ARST7 | Euphorbiaceae | |
| bluntleaf spleenwort | Asplenium obtusifolium L. | ASOB5 | Aspleniaceae | |
| bluntlobe cyanea | Cyanea obtusa (Gray) Hbd. | CYOB4 | Campanulaceae | |
| bluntlobe grapefern | Botrychium oneidense (Gilbert) House | BOON | Ophioglossaceae | |
| bluntscale bahia | Bahia pedata Gray | BAPE | Asteraceae | |
| blutaparon | Blutaparon Raf. | BLUTA | Amaranthaceae | |
| Blytt's andreaea moss | Andreaea blyttii Schimp. | ANBL70 | Andreaeaceae | |
| Blytt's bryum moss | Bryum axel-blyttii Kaur. ex Philib. | BRAX | Bryaceae | |
| blyxa | Blyxa Noronha ex Thouars | BLYXA | Hydrocharitaceae | |
| blyxa | Blyxa octandra Planch. ex Thw. | BLOC2 | Hydrocharitaceae | |
| bocconia | Bocconia L. | BOCCO | Papaveraceae | |
| Bodie Hills cusickiella | Cusickiella quadricostata (Rollins) Rollins | CUQU | Brassicaceae | |
| Bodie Hills rockcress | Arabis bodiensis Rollins | ARBO | Brassicaceae | |
| Bodin's milkvetch | Astragalus bodinii Sheldon | ASBO | Fabaceae | |
| bodywood | Bourreria succulenta Jacq. | BOSU2 | Boraginaceae | |
| boesenbergia | Boesenbergia Kuntze | BOESE | Zingiberaceae | |
| bog beggarticks | Bidens conjuncta Sherff | BICO4 | Asteraceae | |
| bog birch | Betula pumila L. | BEPU4 | Betulaceae | |
| bog birch | Betula pumila L. var. glabra Regel | BEPUG2 | Betulaceae | |
| bog birch | Betula pumila L. var. glandulifera Regel | BEPUG | Betulaceae | |
| bog birch | Betula pumila L. var. pumila | BEPUP2 | Betulaceae | |
| bog birch | Betula pumila L. var. renifolia Fern. | BEPUR | Betulaceae | |
| bog clermontia | Clermontia grandiflora Gaud. | CLGR3 | Campanulaceae | |
| bog clermontia | Clermontia grandiflora Gaud. ssp. grandiflora | CLGRG | Campanulaceae | |
| bog clermontia | Clermontia grandiflora Gaud. ssp. munroi (St. John) Lammers | CLGRM | Campanulaceae | |
| bog mirrorplant | Coprosma elliptica Oliver | COEL3 | Rubiaceae | |
| bog rosemary | Andromeda L. | ANDRO | Ericaceae | |
| bog rosemary | Andromeda polifolia L. | ANPO | Ericaceae | |
| bog rosemary | Andromeda polifolia L. var. glaucophylla (Link) DC. | ANPOG | Ericaceae | |
| bog rosemary | Andromeda polifolia L. var. polifolia | ANPOP | Ericaceae | |
| Boggs Lake dodder | Cuscuta howelliana Rubtzoff | CUHO | Cuscutaceae | |
| Boise milkvetch | Astragalus adanus A. Nels. | ASAD2 | Fabaceae | |
| Boivin's rockcress | Arabis boivinii G. Mulligan | ARBO7 | Brassicaceae | |
| Bolack's sand verbena | Abronia bolackii Atwood, Welsh & Heil | ABBO | Nyctaginaceae | |
| Bolander's brachythecium moss | Brachythecium bolanderi (Lesq.) Jaeg. | BRBO | Brachytheciaceae | |
| Bolander's bruchia moss | Bruchia bolanderi Lesq. | BRBO2 | Bruchiaceae | |
| Bolander's cladidium lichen | Cladidium bolanderi (Tuck.) B. D. Ryan | CLBO6 | Lecanoraceae | |
| Bolander's claopodium moss | Claopodium bolanderi Best | CLBO10 | Leskeaceae | |
| Bolander's milkvetch | Astragalus bolanderi Gray | ASBO2 | Fabaceae | |
| Bolander's mule-ears | Agnorhiza bolanderi (Gray) W.A. Weber | AGBO4 | Asteraceae | |
| Bolander's onion | Allium bolanderi S. Wats. | ALBO | Liliaceae | |
| Bolander's onion | Allium bolanderi S. Wats. var. bolanderi | ALBOB | Liliaceae | |
| Bolander's onion | Allium bolanderi S. Wats. var. mirabile (Henderson) McNeal | ALBOM | Liliaceae | |
| Bolander's onion | Allium bolanderi S. Wats. var. stenanthum (E. Drew) Jepson | ALBOS | Liliaceae | |
| Bolander's reedgrass | Calamagrostis bolanderi Thurb. | CABO | Poaceae | |
| Bolander's sedge | Carex bolanderi Olney | CABO2 | Cyperaceae | |
| Bolander's water-starwort | Callitriche heterophylla Pursh ssp. bolanderi (Hegelm.) Calder & Taylor | CAHEB3 | Callitrichaceae | |
| Bolander's woodreed | Cinna bolanderi Scribn. | CIBO2 | Poaceae | |
| Boldingh's dodder | Cuscuta boldinghii Urban | CUBO | Cuscutaceae | |
| Bolinas manzanita | Arctostaphylos virgata Eastw. | ARVI3 | Ericaceae | |
| Bolivar brosimum | Brosimum alicastrum Sw. ssp. bolivarense (Pitt.) C. C. Berg | BRALB | Moraceae | |
| bolo bolo | Clappertonia ficifolia (Willd.) Decne. | CLFI3 | Tiliaceae | |
| bomarea | Bomarea Mirb. | BOMAR | Liliaceae | |
| bommeria fern | Bommeria Fourn. | BOMME | Pteridaceae | |
| bonebract amaranth | Amaranthus scleropoides Uline & Bray | AMSC | Amaranthaceae | |
| Bonneville saltbush | Atriplex bonnevillensis C.A. Hanson | ATBO | Chenopodiaceae | |
| Bonny Doon manzanita | Arctostaphylos silvicola Jepson & Wies. ex Jepson | ARSI | Ericaceae | |
| Bonpland's croton | Croton bonplandianus Baill. | CRBO4 | Euphorbiaceae | |
| bontia | Bontia L. | BONTI | Myoporaceae | |
| Booth's evening-primrose | Camissonia boothii (Dougl. ex Lehm.) Raven | CABO7 | Onagraceae | |
| Booth's evening-primrose | Camissonia boothii (Dougl. ex Lehm.) Raven ssp. intermedia (Munz) Raven | CABOI | Onagraceae | |
| Booth's suncup | Camissonia boothii (Dougl. ex Lehm.) Raven ssp. boothii | CABOB | Onagraceae | |
| Boott's sedge | Carex picta Steud. | CAPI5 | Cyperaceae | |
| boquillas sandmat | Chamaesyce golondrina (L.C. Wheeler) Shinners | CHGO3 | Euphorbiaceae | |
| borage | Borago L. | BORAG | Boraginaceae | |
| borassus palm | Borassus L. | BORAS2 | Arecaceae | |
| boreal alopecurus | Alopecurus alpinus Sm. | ALAL2 | Poaceae | |
| boreal bog sedge | Carex magellanica Lam. | CAMA12 | Cyperaceae | |
| boreal bog sedge | Carex magellanica Lam. ssp. irrigua (Wahlenb.) Hultén | CAMAI2 | Cyperaceae | |
| boreal bog sedge | Carex magellanica Lam. ssp. magellanica Lam. [excluded] | CAMAM15 | Cyperaceae | |
| Boreal chickweed | Cerastium biebersteinii DC. | CEBI3 | Caryophyllaceae | |
| boreal cup lichen | Cladonia borealis S. Stenroos | CLBO7 | Cladoniaceae | |
| boreal orange lichen | Caloplaca borealis (Vainio) Poelt | CABO15 | Teloschistaceae | |
| boreal sagebrush | Artemisia arctica Less. | ARAR9 | Asteraceae | |
| boreal sagebrush | Artemisia arctica Less. ssp. arctica | ARARA2 | Asteraceae | |
| boreal sagebrush | Artemisia arctica Less. ssp. beringensis (Hultén) Hultén | ARARB | Asteraceae | |
| boreal sagebrush | Artemisia arctica Less. ssp. comata (Rydb.) Hultén | ARARC | Asteraceae | |
| boreal yarrow | Achillea millefolium L. var. borealis (Bong.) Farw. | ACMIB | Asteraceae | |
| borinda | Borinda Stapleton | BORIN | Poaceae | |
| Bornholm's bryum moss | Bryum bornholmense Winkelm. & Ruthe | BRBO3 | Bryaceae | |
| boronia | Boronia Smith | BORON | Rutaceae | |
| Borrego milkvetch | Astragalus lentiginosus Dougl. ex Hook. var. borreganus M.E. Jones | ASLEB | Fabaceae | |
| Bory's cup lichen | Cladonia boryi Tuck. | CLBO60 | Cladoniaceae | |
| borzicactus | Borzicactus Riccob. | BORZI | Cactaceae | |
| boscia | Boscia Lam. | BOSCI | Capparaceae | |
| boswellia | Boswellia Roxb. ex Colebr. | BOSWE | Burseraceae | |
| bothriospermum | Bothriospermum Bunge | BOTHR2 | Boraginaceae | |
| Botta's clarkia | Clarkia bottae (Spach) H.F. & M.E. Lewis | CLBO | Onagraceae | |
| bottlebrush | Callistemon R. Br. | CALLI12 | Myrtaceae | |
| bottlebrush | Callistemon rigidus R. Br. | CARI9 | Myrtaceae | |
| bottlebrush buckeye | Aesculus parviflora Walt. | AEPA2 | Hippocastanaceae | |
| bottlebrush sedge | Carex hystericina Muhl. ex Willd. | CAHY4 | Cyperaceae | |
| bottlebrush threeawn | Aristida spiciformis Ell. | ARSP3 | Poaceae | |
| bottle-palm | Beaucarnea Lem. | BEAUC | Liliaceae | |
| bottle-palm | Beaucarnea recurvata Lem. | BERE4 | Liliaceae | |
| bouchea | Bouchea Cham. | BOUCH | Verbenaceae | |
| bouchetia | Bouchetia Dunal | BOUCH2 | Solanaceae | |
| bougainvillea | Bougainvillea Comm. ex Juss. | BOUGA | Nyctaginaceae | |
| Boundary Peak rockcress | Arabis pinzliae Rollins | ARPI2 | Brassicaceae | |
| bountiful hawthorn | Crataegus alma Beadle | CRAL14 | Rosaceae | |
| Bourgov's milkvetch | Astragalus bourgovii Gray | ASBO3 | Fabaceae | |
| bouvardia | Bouvardia Salisb. | BOUVA | Rubiaceae | |
| bower wattle | Acacia cognata Domin | ACCO15 | Fabaceae | |
| bowlesia | Bowlesia Ruiz & Pavón | BOWLE | Apiaceae | |
| box pussytoes | Antennaria arcuata Cronq. | ANAR4 | Asteraceae | |
| boxelder | Acer negundo L. | ACNE2 | Aceraceae | |
| boxelder | Acer negundo L. var. interius (Britt.) Sarg. | ACNEI2 | Aceraceae | |
| boxelder | Acer negundo L. var. negundo | ACNEN | Aceraceae | |
| boxelder | Acer negundo L. var. texanum Pax | ACNET | Aceraceae | |
| boxelder | Acer negundo L. var. violaceum (Kirchn.) Jaeger | ACNEV | Aceraceae | |
| boxthorn fiddlewood | Citharexylum brachyanthum (Gray) Gray | CIBR3 | Verbenaceae | |
| boxwood | Buxus L. | BUXUS | Buxaceae | |
| brachelyma moss | Brachelyma Schimp. ex Card. | BRACH11 | Fontinalaceae | |
| brachelyma moss | Brachelyma subulatum (P. Beauv.) Schimp. ex Card. | BRSU8 | Fontinalaceae | |
| brachychiton | Brachychiton Schott & Endl. | BRACH13 | Sterculiaceae | |
| brachydontium moss | Brachydontium Fürnr. | BRACH9 | Seligeriaceae | |
| brachydontium moss | Brachydontium trichodes (Web.) Milde | BRTR4 | Seligeriaceae | |
| brachymenium moss | Brachymenium Schwaegr. | BRACH12 | Bryaceae | |
| brachymenium moss | Brachymenium speciosum (Hook. f. & Wils.) Steere | BRSP7 | Bryaceae | |
| brachymenium moss | Brachymenium systylium (C. Müll.) Jaeg. | BRSY2 | Bryaceae | |
| brachythecium moss | Brachythecium albicans (Hedw.) Schimp. in B.S.G. | BRAL70 | Brachytheciaceae | |
| brachythecium moss | Brachythecium biventrosum (C. Müll.) Jaeg. | BRBI4 | Brachytheciaceae | |
| brachythecium moss | Brachythecium campestre (C. Müll.) Schimp. in B.S.G. | BRCA18 | Brachytheciaceae | |
| brachythecium moss | Brachythecium collinum (Schleich. ex C. Müll.) Schimp. in B.S.G. | BRCO12 | Brachytheciaceae | |
| brachythecium moss | Brachythecium digastrum C. Müll. & Kindb. in Mac. & Kindb. | BRDI11 | Brachytheciaceae | |
| brachythecium moss | Brachythecium erythrorrhizon Schimp. in B.S.G. | BRER8 | Brachytheciaceae | |
| brachythecium moss | Brachythecium hyalotapetum B. Hig. & N. Hig. | BRHY3 | Brachytheciaceae | |
| brachythecium moss | Brachythecium mildeanum (Schimp.) Schimp. ex Milde | BRMI5 | Brachytheciaceae | |
| brachythecium moss | Brachythecium oedipodium (Mitt.) Jaeg. | BROE | Brachytheciaceae | |
| brachythecium moss | Brachythecium oxycladon (Brid.) Jaeg. | BROX2 | Brachytheciaceae | |
| brachythecium moss | Brachythecium plumosum (Hedw.) Schimp. in B.S.G. | BRPL5 | Brachytheciaceae | |
| brachythecium moss | Brachythecium populeum (Hedw.) Schimp. in B.S.G. | BRPO4 | Brachytheciaceae | |
| brachythecium moss | Brachythecium reflexum (Starke in Web. & Mohr) Schimp. in B.S.G. | BRRE7 | Brachytheciaceae | |
| brachythecium moss | Brachythecium reflexum (Starke in Web. & Mohr) Schimp. in B.S.G. var. reflexum | BRRER | Brachytheciaceae | |
| brachythecium moss | Brachythecium rivulare Schimp. in B.S.G. | BRRI5 | Brachytheciaceae | |
| brachythecium moss | Brachythecium rotaeanum De Not. | BRRO5 | Brachytheciaceae | |
| brachythecium moss | Brachythecium rutabulum (Hedw.) Schimp. in B.S.G. | BRRU5 | Brachytheciaceae | |
| brachythecium moss | Brachythecium salebrosum (Web. & Mohr) Schimp. in B.S.G. | BRSA7 | Brachytheciaceae | |
| brachythecium moss | Brachythecium salebrosum (Web. & Mohr) Schimp. in B.S.G. var. salebrosum | BRSAS | Brachytheciaceae | |
| brachythecium moss | Brachythecium Schimp. in B.S.G. | BRACH10 | Brachytheciaceae | |
| brachythecium moss | Brachythecium stereopoma (Spruce ex Mitt.) Jaeg. | BRST5 | Brachytheciaceae | |
| brachythecium moss | Brachythecium trachypodium (Brid.) Schimp. in B.S.G. | BRTR5 | Brachytheciaceae | |
| brachythecium moss | Brachythecium velutinum (Hedw.) Schimp. in B.S.G. | BRVE7 | Brachytheciaceae | |
| brachythecium moss | Brachythecium velutinum (Hedw.) Schimp. in B.S.G. var. velutinum | BRVEV2 | Brachytheciaceae | |
| brachythecium moss | Brachythecium velutinum (Hedw.) Schimp. in B.S.G. var. venustum (De Not.) Arc. | BRVEV3 | Brachytheciaceae | |
| bracketplant | Chlorophytum capense (L.) Voss | CHCA28 | Liliaceae | |
| bract milkweed | Asclepias brachystephana Engelm. ex Torr. | ASBR | Asclepiadaceae | |
| bracted colicroot | Aletris bracteata Northrop | ALBR6 | Liliaceae | |
| bracted strawflower | Bracteantha bracteata (Vent.) A. Anderb. & Heagi | BRBR15 | Asteraceae | |
| bractscale | Atriplex serenana A. Nels. | ATSE2 | Chenopodiaceae | |
| bractscale | Atriplex serenana A. Nels. var. serenana | ATSES | Chenopodiaceae | |
| Bradley's spleenwort | Asplenium bradleyi D.C. Eat. | ASBR2 | Aspleniaceae | |
| Brainerd's hawthorn | Crataegus brainerdii Sarg. | CRBR3 | Rosaceae | |
| Brainerd's sedge | Carex brainerdii Mackenzie | CABR7 | Cyperaceae | |
| bramble acacia | Acacia victoriae Benth. | ACVI7 | Fabaceae | |
| branched centaury | Centaurium pulchellum (Sw.) Druce | CEPU3 | Gentianaceae | |
| branched pencil cholla | Cylindropuntia ramosissima (Engelm.) F.M. Knuth | CYRA9 | Cactaceae | |
| Brandegee's cirriphyllum moss | Cirriphyllum brandegeei (Aust.) Grout | CIBR5 | Brachytheciaceae | |
| Brandegee's clarkia | Clarkia biloba (Dur.) A. Nels. & J.F. Macbr. ssp. brandegeeae (Jepson) H.F. & M.E. Lewis | CLBIB | Onagraceae | |
| Brandegee's fumewort | Corydalis caseana Gray ssp. brandegeei (S. Wats.) G.B. Ownbey | COCAB2 | Fumariaceae | |
| Brandegee's milkvetch | Astragalus brandegeei Porter | ASBR5 | Fabaceae | |
| Brandegee's onion | Allium brandegeei S. Wats. | ALBR | Liliaceae | |
| Brandegee's springbeauty | Claytonia saxosa Brandeg. | CLSA3 | Portulacaceae | |
| brasenia | Brasenia Schreb. | BRASE | Cabombaceae | |
| brasiletto | Caesalpinia violacea Standl. | CAVI22 | Fabaceae | |
| brassavola | Brassavola R. Br. ex Ait. f. | BRASS3 | Orchidaceae | |
| brassia | Brassia R. Br. ex Ait. f. | BRASS4 | Orchidaceae | |
| Bratt's orange lichen | Caloplaca brattiae W. A. Weber | CABR33 | Teloschistaceae | |
| braunia moss | Braunia Schimp. in B.S.G. | BRAUN | Hedwigiaceae | |
| braunia moss | Braunia secunda (Hook.) Schimp. in B.S.G. | BRSE6 | Hedwigiaceae | |
| Braunton's milkvetch | Astragalus brauntonii Parish | ASBR6 | Fabaceae | |
| Brazilian begonia | Begonia hirtella Link | BEHI2 | Begoniaceae | |
| Brazilian bluewood | Condalia hookeri M.C. Johnston | COHO | Rhamnaceae | |
| Brazilian bluewood | Condalia hookeri M.C. Johnston var. hookeri | COHOH | Rhamnaceae | |
| Brazilian jackbean | Canavalia brasiliensis Mart. ex Benth. | CABR21 | Fabaceae | |
| Brazilian joyweed | Alternanthera brasiliana (L.) Kuntze | ALBR5 | Amaranthaceae | |
| Brazilian pricklypear | Brasiliopuntia brasiliensis (Willd.) Berger | BRBR6 | Cactaceae | |
| Brazilian waterhyssop | Bacopa egensis (Poepp.) Pennell | BAEG | Scrophulariaceae | |
| brazilnut | Bertholletia excelsa Humb. & Bonpl. | BEEX2 | Lecythidaceae | |
| Brazilwood | Caesalpinia echinata Lam. | CAEC3 | Fabaceae | |
| Brazos hawthorn | Crataegus brazoria Sarg. | CRBR4 | Rosaceae | |
| Brazos milkvetch | Astragalus brazoensis Buckl. | ASBR7 | Fabaceae | |
| Brazos rockcress | Arabis petiolaris (Gray) Gray | ARPE4 | Brassicaceae | |
| brazos-mint | Brazoria Engelm. & Gray | BRAZO | Lamiaceae | |
| breadfruit | Artocarpus altilis (Parkinson) Fosberg | ARAL7 | Moraceae | |
| breadfruit | Artocarpus J.R. & G. Forst. | ARTOC | Moraceae | |
| breadnut | Brosimum alicastrum Sw. | BRAL3 | Moraceae | |
| Brenda's yellow cryptantha | Cryptantha flava (A. Nels.) Payson | CRFL5 | Boraginaceae | |
| Brewer's angelica | Angelica breweri Gray | ANBR5 | Apiaceae | |
| Brewer's bittercress | Cardamine breweri S. Wats. | CABR6 | Brassicaceae | |
| Brewer's bittercress | Cardamine breweri S. Wats. var. breweri | CABRB | Brassicaceae | |
| Brewer's milkvetch | Astragalus breweri Gray | ASBR8 | Fabaceae | |
| Brewer's redmaids | Calandrinia breweri S. Wats. | CABR3 | Portulacaceae | |
| Brewer's rockcress | Arabis breweri S. Wats. | ARBR | Brassicaceae | |
| Brewer's rockcress | Arabis breweri S. Wats. var. austiniae (Greene) Rollins | ARBRA | Brassicaceae | |
| Brewer's rockcress | Arabis breweri S. Wats. var. breweri | ARBRB | Brassicaceae | |
| Brewer's rockcress | Arabis breweri S. Wats. var. pecuniaria Rollins | ARBRP | Brassicaceae | |
| Brewer's sedge | Carex breweri Boott | CABR12 | Cyperaceae | |
| breynia | Breynia J.R. & G. Forst. | BREYN | Euphorbiaceae | |
| brickellbush | Asanthus King & H.E. Robins. | ASANT2 | Asteraceae | |
| brickellbush | Brickellia Ell. | BRICK | Asteraceae | |
| brickellbush | Brickelliastrum King & H.E. Robins. | BRICK3 | Asteraceae | |
| bride's bonnet | Clintonia uniflora (Menzies ex J.A. & J.H. Schultes) Kunth | CLUN2 | Liliaceae | |
| bride's feathers | Aruncus dioicus (Walt.) Fern. | ARDI8 | Rosaceae | |
| bride's feathers | Aruncus dioicus (Walt.) Fern. var. acuminatus (Rydb.) Rydb. ex Hara | ARDIA | Rosaceae | |
| bride's feathers | Aruncus dioicus (Walt.) Fern. var. dioicus | ARDID2 | Rosaceae | |
| bride's feathers | Aruncus dioicus (Walt.) Fern. var. pubescens (Rydb.) Fern. | ARDIP | Rosaceae | |
| bride's feathers | Aruncus dioicus (Walt.) Fern. var. vulgaris (Maxim.) Hara | ARDIV | Rosaceae | |
| bridgotree | Chionanthus compactus Sw. | CHCO12 | Oleaceae | |
| brigantiaea lichen | Brigantiaea fuscolutea (Dickson) R. Sant. | BRFU2 | Brigantiaceae | |
| brigantiaea lichen | Brigantiaea leucoxantha (Sprengel) R. Sant. & Hafellner | BRLE8 | Brigantiaceae | |
| brigantiaea lichen | Brigantiaea Trevisan | BRIGA | Brigantiaceae | |
| brighamia | Brighamia Gray | BRIGH | Campanulaceae | |
| brightgreen spleenwort | Asplenium trichomanes-ramosum L. | ASTR10 | Aspleniaceae | |
| bristle bent | Agrostis curtisii Kerguelen | AGCU4 | Poaceae | |
| bristlecone cryptantha | Cryptantha roosiorum Munz | CRRO3 | Boraginaceae | |
| bristlecone fir | Abies bracteata (D. Don) D. Don ex Poit. | ABBR | Pinaceae | |
| bristlecup sandmat | Chamaesyce chaetocalyx (Boiss.) Woot. & Standl. | CHCH5 | Euphorbiaceae | |
| bristlecup sandmat | Chamaesyce chaetocalyx (Boiss.) Woot. & Standl. var. chaetocalyx | CHCHC3 | Euphorbiaceae | |
| bristlecup sandmat | Chamaesyce chaetocalyx (Boiss.) Woot. & Standl. var. triligulata (L.C. Wheeler) Mayfield | CHCHT | Euphorbiaceae | |
| bristleflower collomia | Collomia macrocalyx Leib. ex Brand | COMA3 | Polemoniaceae | |
| bristlehead | Carphochaete Gray | CARPH2 | Asteraceae | |
| bristleleaf chaffhead | Carphephorus pseudoliatris Cass. | CAPS5 | Asteraceae | |
| bristleleaf sedge | Carex eburnea Boott | CAEB2 | Cyperaceae | |
| bristly cryptantha | Cryptantha setosissima (Gray) Payson | CRSE5 | Boraginaceae | |
| bristly dogstail grass | Cynosurus echinatus L. | CYEC | Poaceae | |
| bristly fiddleneck | Amsinckia tessellata Gray | AMTE3 | Boraginaceae | |
| bristly fiddleneck | Amsinckia tessellata Gray var. gloriosa (Eastw. ex Suksdorf) Hoover | AMTEG | Boraginaceae | |
| bristly fiddleneck | Amsinckia tessellata Gray var. tessellata | AMTET | Boraginaceae | |
| bristly flatsedge | Cyperus hystricinus Fern. | CYHY | Cyperaceae | |
| bristly hawksbeard | Crepis setosa Haller f. | CRSE2 | Asteraceae | |
| bristly lovegrass | Cladoraphis cyperoides (Thunb.) S.M. Phillips | CLCY2 | Poaceae | |
| bristly lovegrass | Cladoraphis Franch. | CLADO | Poaceae | |
| bristly sarsaparilla | Aralia hispida Vent. | ARHI2 | Araliaceae | |
| bristlyleaf rockcress | Arabis rectissima Greene | ARRE | Brassicaceae | |
| bristlyleaf rockcress | Arabis rectissima Greene var. rectissima | ARRER2 | Brassicaceae | |
| bristlyleaf rockcress | Arabis rectissima Greene var. simulans Rollins | ARRES | Brassicaceae | |
| bristlystalked sedge | Carex leptalea Wahlenb. | CALE10 | Cyperaceae | |
| bristlystalked sedge | Carex leptalea Wahlenb. ssp. leptalea | CALEL4 | Cyperaceae | |
| British Columbia wildginger | Asarum caudatum Lindl. | ASCA2 | Aristolochiaceae | |
| brittle lichen | Cornicularia (Schreber) Hoffm. | CORNI | Parmeliaceae | |
| brittle lichen | Cornicularia normoerica (Gunn.) Du Rietz | CONO2 | Parmeliaceae | |
| brittle spineflower | Chorizanthe brevicornu Torr. | CHBR | Polygonaceae | |
| brittle spineflower | Chorizanthe brevicornu Torr. var. brevicornu | CHBRB | Polygonaceae | |
| brittle spineflower | Chorizanthe brevicornu Torr. var. spathulata (Small ex Rydb.) C.L. Hitchc. | CHBRS | Polygonaceae | |
| brittleleaf manzanita | Arctostaphylos tomentosa (Pursh) Lindl. ssp. crustacea (Eastw.) P.V. Wells | ARTOC3 | Ericaceae | |
| brittlescale | Atriplex depressa Jepson | ATDE3 | Chenopodiaceae | |
| Britton's centaury | Centaurium quitense (Kunth) B.L. Robins. | CEQU | Gentianaceae | |
| Britton's sedge | Carex tetrastachya Scheele | CATE29 | Cyperaceae | |
| broad looseflower sedge | Carex laxiflora Lam. | CALA19 | Cyperaceae | |
| broad looseflower sedge | Carex laxiflora Lam. var. laxiflora | CALAL5 | Cyperaceae | |
| broad looseflower sedge | Carex laxiflora Lam. var. serrulata F.J. Herm. | CALAS | Cyperaceae | |
| broadbeaked mustard | Brassica narinosa L. H. Bailey | BRNA3 | Brassicaceae | |
| broadfruit mariposa lily | Calochortus nitidus Dougl. | CANI | Liliaceae | |
| broadkeel milkvetch | Astragalus platytropis Gray | ASPL3 | Fabaceae | |
| broadleaf arnica | Arnica latifolia Bong. | ARLA8 | Asteraceae | |
| broadleaf caper | Capparis hastata Jacq. | CAHA9 | Capparaceae | |
| broadleaf carpetgrass | Axonopus compressus (Sw.) Beauv. | AXCO | Poaceae | |
| broadleaf enchanter's nightshade | Circaea lutetiana L. | CILU | Onagraceae | |
| broadleaf enchanter's nightshade | Circaea lutetiana L. ssp. canadensis (L.) Aschers. & Magnus | CILUC | Onagraceae | |
| broadleaf gilia | Aliciella latifolia (S. Wats.) J.M. Porter ssp. imperialis (Welsh) J.M. Porter | ALLAI | Polemoniaceae | |
| broadleaf gilia | Aliciella latifolia (S. Wats.) J.M. Porter ssp. latifolia | ALLAL3 | Polemoniaceae | |
| broad-leaf gilia | Aliciella latifolia (S. Wats.) J.M. Porter | ALLA13 | Polemoniaceae | |
| broadleaf hawthorn | Crataegus dilatata Sarg. | CRDI | Rosaceae | |
| broadleaf maidenhair | Adiantum latifolium Lam. | ADLA | Pteridaceae | |
| broadleaf milkvetch | Astragalus lentiginosus Dougl. ex Hook. var. chartaceus M.E. Jones | ASLEC | Fabaceae | |
| broadleaf milkweed | Asclepias latifolia (Torr.) Raf. | ASLA4 | Asclepiadaceae | |
| broadleaf papala | Charpentiera obovata Gaud. | CHOB2 | Amaranthaceae | |
| broadleaf sedge | Carex platyphylla Carey | CAPL5 | Cyperaceae | |
| broadleaf tickseed | Coreopsis latifolia Michx. | COLA7 | Asteraceae | |
| broadleaf wild leek | Allium ampeloprasum L. | ALAM | Liliaceae | |
| broadleaf wild leek | Allium atroviolaceum Boiss. | ALAT3 | Liliaceae | |
| broadscale sedge | Carex platylepis Mackenzie | CAPL8 | Cyperaceae | |
| broadstemmed onion | Allium platycaule S. Wats. | ALPL2 | Liliaceae | |
| broadtooth lady's mantle | Alchemilla subcrenata Buser | ALSU2 | Rosaceae | |
| broadvein sedge | Carex lativena S.D. & G.D. Jones | CALA76 | Cyperaceae | |
| broadwing sedge | Carex alata Torr. | CAAL3 | Cyperaceae | |
| broccoli | Brassica oleracea L. var. botrytis L. | BROLB | Brassicaceae | |
| brodiaea | Brodiaea Sm. | BRODI | Liliaceae | |
| brodoa lichen | Brodoa Goward | BRODO2 | Parmeliaceae | |
| brome | Bromus L. | BROMU | Poaceae | |
| bromelia | Bromelia L. | BROME | Bromeliaceae | |
| bromelike sedge | Carex bromoides Schkuhr ex Willd. | CABR14 | Cyperaceae | |
| bromelike sedge | Carex bromoides Schkuhr ex Willd. ssp. bromoides | CABRB6 | Cyperaceae | |
| bromelike sedge | Carex bromoides Schkuhr ex Willd. ssp. montana Naczi | CABRM2 | Cyperaceae | |
| brookfoam | Boykinia Nutt. | BOYKI | Saxifragaceae | |
| Brooks' alsophila | Alsophila brooksii (Maxon) R. Tryon | ALBR3 | Cyatheaceae | |
| broom brome | Bromus scoparius L. | BRSC3 | Poaceae | |
| broom crowberry | Corema conradii (Torr.) Torr. ex Loud. | COCO9 | Empetraceae | |
| broom sedge | Carex scoparia Schkuhr ex Willd. | CASC11 | Cyperaceae | |
| broom sedge | Carex scoparia Schkuhr ex Willd. var. scoparia | CASCS | Cyperaceae | |
| broom sedge | Carex scoparia Schkuhr ex Willd. var. tessellata Fern. & Wieg. | CASCT | Cyperaceae | |
| broom silverbush | Argythamnia fasciculata (Vahl ex A. Juss.) Muell.-Arg. | ARFA | Euphorbiaceae | |
| broom wattle | Acacia calamifolia Sweet ex Lindl. | ACCA24 | Fabaceae | |
| broombush false willow | Baccharis dioica Vahl | BADI3 | Asteraceae | |
| broomsedge bluestem | Andropogon virginicus L. | ANVI2 | Poaceae | |
| broomsedge bluestem | Andropogon virginicus L. var. decipiens C. Campbell | ANVID | Poaceae | |
| broomsedge bluestem | Andropogon virginicus L. var. virginicus | ANVIV | Poaceae | |
| broomweed | Amphiachyris (A. DC.) Nutt. | AMPHI8 | Asteraceae | |
| brosimum | Brosimum Sw. | BROSI | Moraceae | |
| brothera moss | Brothera C. Müll. | BROTH | Dicranaceae | |
| brothera moss | Brothera leana (Sull.) C. Müll. | BRLE10 | Dicranaceae | |
| brotherella moss | Brotherella Loeske ex Fleisch. | BROTH2 | Sematophyllaceae | |
| Brouard's dotted lichen | Bacidia brouardii (de Lesd.) Zahlbr. | BABR3 | Bacidiaceae | |
| broughtonia | Broughtonia R. Brown | BROUG | Orchidaceae | |
| broussaisia | Broussaisia Gaud. | BROUS2 | Hydrangeaceae | |
| broussonetia | Broussonetia L'Hér. ex Vent. | BROUS | Moraceae | |
| browallia | Browallia L. | BROWA | Solanaceae | |
| brown bentgrass | Agrostis vinealis Schreb. | AGVI9 | Poaceae | |
| brown bentgrass | Agrostis vinealis Schreb. ssp. vinealis | AGVIV3 | Poaceae | |
| brown dogwood | Cornus glabrata Benth. | COGL3 | Cornaceae | |
| brown flatsedge | Cyperus fuscus L. | CYFU3 | Cyperaceae | |
| brown nicker | Caesalpinia portoricensis (Britt. & P. Wilson) Alain | CAPO6 | Fabaceae | |
| brown sarson | Brassica rapa L. ssp. sarson (Prain) Denford | BRRAS2 | Brassicaceae | |
| brown sedge | Carex subfusca W. Boott | CASU6 | Cyperaceae | |
| Browne's blechum | Blechum pyramidatum (Lam.) Urban | BLPY | Acanthaceae | |
| Browne's savory | Clinopodium brownei (Sw.) Kuntze | CLBR7 | Lamiaceae | |
| browneyes | Camissonia claviformis (Torr. & Frém.) Raven | CACL4 | Onagraceae | |
| browneyes | Camissonia claviformis (Torr. & Frém.) Raven ssp. aurantiaca (Munz) Raven | CACLA2 | Onagraceae | |
| browneyes | Camissonia claviformis (Torr. & Frém.) Raven ssp. claviformis | CACLC3 | Onagraceae | |
| browneyes | Camissonia claviformis (Torr. & Frém.) Raven ssp. cruciformis (Kellogg) Raven | CACLC | Onagraceae | |
| browneyes | Camissonia claviformis (Torr. & Frém.) Raven ssp. funerea (Raven) Raven | CACLF | Onagraceae | |
| browneyes | Camissonia claviformis (Torr. & Frém.) Raven ssp. integrior (Raven) Raven | CACLI | Onagraceae | |
| browneyes | Camissonia claviformis (Torr. & Frém.) Raven ssp. rubescens (Raven) Raven | CACLR2 | Onagraceae | |
| brownfoot | Acourtia wrightii (Gray) Reveal & King | ACWR5 | Asteraceae | |
| brownhair lacefern | Ctenitis submarginalis (Langsd. & Fisch.) Ching | CTSU2 | Dryopteridaceae | |
| brownish sedge | Carex brunnescens (Pers.) Poir. | CABR15 | Cyperaceae | |
| brownish sedge | Carex brunnescens (Pers.) Poir. ssp. brunnescens | CABRB3 | Cyperaceae | |
| brownish sedge | Carex brunnescens (Pers.) Poir. ssp. sphaerostachya (Tuckerman) Kalela | CABRS | Cyperaceae | |
| brownray knapweed | Centaurea jacea L. | CEJA | Asteraceae | |
| Brown's amaranth | Amaranthus brownii Christoph. & Caum | AMBR5 | Amaranthaceae | |
| brownspined pricklypear | Cylindropuntia californica (Torr. & Gray) F.M. Knuth var. parkeri (Coult.) J. Rebman | CYCAP5 | Cactaceae | |
| brownstem spleenwort | Asplenium laetum Sw. | ASLA10 | Aspleniaceae | |
| browse milkvetch | Astragalus cibarius Sheldon | ASCI2 | Fabaceae | |
| bruchia moss | Bruchia flexuosa (Sw. ex Schwaegr.) C. Müll. | BRFL3 | Bruchiaceae | |
| bruchia moss | Bruchia fusca Britt. | BRFU4 | Bruchiaceae | |
| bruchia moss | Bruchia Schwaegr. | BRUCH | Bruchiaceae | |
| bruchia moss | Bruchia vogesiaca Nestl. ex Schwaegr. | BRVO2 | Bruchiaceae | |
| brugmansia | Brugmansia Pers. | BRUGM | Solanaceae | |
| bruguiera | Bruguiera Savigny | BRUGU | Rhizophoraceae | |
| Bruneau mariposa lily | Calochortus bruneaunis A. Nels. & J.F. Macbr. | CABR4 | Liliaceae | |
| Bruneau milkvetch | Astragalus camptopus Barneby | ASCA10 | Fabaceae | |
| brunellia | Brunellia Ruiz & Pavón | BRUNE | Brunelliaceae | |
| brunfelsia | Brunfelsia chiricaspi Plowman | BRCH3 | Solanaceae | |
| brunnera | Brunnera C. Steven | BRUNN2 | Boraginaceae | |
| brussels sprouts | Brassica oleracea L. var. gemmifera DC. | BROLG | Brassicaceae | |
| Bryan's flatsedge | Cyperus pennatiformis Kükenth. var. bryanii Kükenth. | CYPEB | Cyperaceae | |
| Bryce Canyon Indian paintbrush | Castilleja revealii N. Holmgren | CARE10 | Scrophulariaceae | |
| bryhnia moss | Bryhnia graminicolor (Brid.) Grout | BRGR11 | Brachytheciaceae | |
| bryhnia moss | Bryhnia Kaur. | BRYHN | Brachytheciaceae | |
| bryoandersonia moss | Bryoandersonia illecebra (Hedw.) Robins. | BRIL | Brachytheciaceae | |
| bryoandersonia moss | Bryoandersonia Robins. | BRYOA | Brachytheciaceae | |
| bryobrittonia moss | Bryobrittonia longipes (Williams) Horton | BRLO3 | Encalyptaceae | |
| bryobrittonia moss | Bryobrittonia Williams | BRYOB | Encalyptaceae | |
| bryocaulon lichen | Bryocaulon divergens (Ach.) Karnefelt | BRDI60 | Parmeliaceae | |
| bryocaulon lichen | Bryocaulon Karnefelt | BRYOC2 | Parmeliaceae | |
| bryocaulon lichen | Bryocaulon pseudosatoanum (Asah.) Karnefelt | BRPS3 | Parmeliaceae | |
| bryocrumia moss | Bryocrumia Anderson | BRYOC3 | Hypnaceae | |
| bryocrumia moss | Bryocrumia vivicolor (Dix.) Buck | BRVI6 | Hypnaceae | |
| bryoerythrophyllum moss | Bryoerythrophyllum Chen | BRYOE2 | Pottiaceae | |
| bryoerythrophyllum moss | Bryoerythrophyllum ferruginascens (Stirt.) Giac. | BRFE5 | Pottiaceae | |
| bryoerythrophyllum moss | Bryoerythrophyllum recurvirostre (Hedw.) Chen | BRRE70 | Pottiaceae | |
| bryohaplocladium moss | Bryohaplocladium angustifolium (Hampe & C. Müll.) Wat. & Iwats. | BRAN7 | Leskeaceae | |
| bryohaplocladium moss | Bryohaplocladium microphyllum (Hedw.) Wat. & Iwats. | BRMI9 | Leskeaceae | |
| bryohaplocladium moss | Bryohaplocladium Wat. & Iwats. | BRYOH | Leskeaceae | |
| bryonora lichen | Bryonora castanea (Hepp) Poelt | BRCA13 | Lecanoraceae | |
| bryonora lichen | Bryonora curvescens (Mudd) Poelt | BRCU2 | Lecanoraceae | |
| bryonora lichen | Bryonora Poelt | BRYON2 | Lecanoraceae | |
| bryony | Bryonia L. | BRYON | Cucurbitaceae | |
| bryoxiphium moss | Bryoxiphium Mitt. | BRYOX | Bryoxiphiaceae | |
| Bryson's sedge | Carex brysonii Naczi | CABR44 | Cyperaceae | |
| bryum moss | Bryum aeneum Blytt ex Bruch & Schimp. in B.S.G. | BRAE | Bryaceae | |
| bryum moss | Bryum algovicum Sendtn. ex C. Müll. | BRAL12 | Bryaceae | |
| bryum moss | Bryum algovicum Sendtn. ex C. Müll. var. algovicum | BRALA3 | Bryaceae | |
| bryum moss | Bryum algovicum Sendtn. ex C. Müll. var. rutheanum (Warnst.) Crundw. | BRALR | Bryaceae | |
| bryum moss | Bryum amblyodon C. Müll. | BRAM70 | Bryaceae | |
| bryum moss | Bryum brachyneuron Kindb. in J. M. Mac. | BRBR9 | Bryaceae | |
| bryum moss | Bryum calobryoides Spence | BRCA20 | Bryaceae | |
| bryum moss | Bryum calophyllum R. Br. | BRCA21 | Bryaceae | |
| bryum moss | Bryum capillare Hedw. | BRCA25 | Bryaceae | |
| bryum moss | Bryum capillare Hedw. var. barbatum (C. Jens.) Podp. | BRCAB | Bryaceae | |
| bryum moss | Bryum capillare Hedw. var. capillare | BRCAC4 | Bryaceae | |
| bryum moss | Bryum coronatum Schwaegr. | BRCO14 | Bryaceae | |
| bryum moss | Bryum curvatum Kaur. & Arnell | BRCU3 | Bryaceae | |
| bryum moss | Bryum cyclophyllum (Schwaegr.) Bruch & Schimp. in B.S.G. | BRCY70 | Bryaceae | |
| bryum moss | Bryum dichotomum Hedw. | BRDI12 | Bryaceae | |
| bryum moss | Bryum erythroloma (Kindb.) Syed | BRER9 | Bryaceae | |
| bryum moss | Bryum flaccidum Brid. | BRFL4 | Bryaceae | |
| bryum moss | Bryum gemmascens Kindb. | BRGE2 | Bryaceae | |
| bryum moss | Bryum gemmilucens Wilcz. & Dem. | BRGE3 | Bryaceae | |
| bryum moss | Bryum gemmiparum De Not. | BRGE4 | Bryaceae | |
| bryum moss | Bryum Hedw. | BRYUM2 | Bryaceae | |
| bryum moss | Bryum incrassatolimbatum Card. | BRIN11 | Bryaceae | |
| bryum moss | Bryum lisae De Not. | BRLI3 | Bryaceae | |
| bryum moss | Bryum lisae De Not. var. cuspidatum (Bruch & Schimp. in B.S.G.) Marg. | BRLIC70 | Bryaceae | |
| bryum moss | Bryum lonchocaulon C. Müll. | BRLO4 | Bryaceae | |
| bryum moss | Bryum longisetum Bland. ex Schwaegr. | BRLO6 | Bryaceae | |
| bryum moss | Bryum longisetum Bland. ex Schwaegr. var. longisetum | BRLOL | Bryaceae | |
| bryum moss | Bryum meesioides Kindb. in Mac. | BRME2 | Bryaceae | |
| bryum moss | Bryum microchaeton Hampe | BRMI10 | Bryaceae | |
| bryum moss | Bryum nitidulum Lindb. | BRNI3 | Bryaceae | |
| bryum moss | Bryum pallens (Brid.) Sw. in Röhl. | BRPA70 | Bryaceae | |
| bryum moss | Bryum pallescens Schleich. ex Schwaegr. | BRPA14 | Bryaceae | |
| bryum moss | Bryum pseudocapillare Besch. | BRPS5 | Bryaceae | |
| bryum moss | Bryum purpurascens (R. Br.) Bruch & Schimp. in B.S.G. | BRPU12 | Bryaceae | |
| bryum moss | Bryum pyriferum Crundw. & H. Whiteh. | BRPY | Bryaceae | |
| bryum moss | Bryum radiculosum Brid. | BRRA6 | Bryaceae | |
| bryum moss | Bryum rubens Mitt. | BRRU6 | Bryaceae | |
| bryum moss | Bryum ruderale Crundw. & Nyh. | BRRU7 | Bryaceae | |
| bryum moss | Bryum rutilans Brid. | BRRU8 | Bryaceae | |
| bryum moss | Bryum salinum Hag. ex Limpr. | BRSA4 | Bryaceae | |
| bryum moss | Bryum subapiculatum Hampe | BRSU9 | Bryaceae | |
| bryum moss | Bryum subneodamense Kindb. | BRSU10 | Bryaceae | |
| bryum moss | Bryum tenuisetum Limpr. | BRTE8 | Bryaceae | |
| bryum moss | Bryum teres Lindb. | BRTE9 | Bryaceae | |
| bryum moss | Bryum turbinatum (Hedw.) Turn. | BRTU2 | Bryaceae | |
| bryum moss | Bryum uliginosum (Brid.) Bruch & Schimp. in B.S.G. | BRUL2 | Bryaceae | |
| bryum moss | Bryum violaceum Crundw. & Nyh. | BRVI8 | Bryaceae | |
| bryum moss | Bryum warneum (Röhl.) Bland. ex Brid. | BRWA2 | Bryaceae | |
| buchanania | Buchanania Sprengel | BUCHA | Anacardiaceae | |
| buchenavia | Buchenavia Eichl. | BUCHE | Combretaceae | |
| buchu | Agathosma betulina (Bergius) Pill. | AGBE2 | Rutaceae | |
| buchu | Agathosma crenulata (L.) Pill. | AGCR4 | Rutaceae | |
| bucida | Bucida L. | BUCID | Combretaceae | |
| buckbrush | Ceanothus cuneatus (Hook.) Nutt. | CECU | Rhamnaceae | |
| buckbrush | Ceanothus cuneatus (Hook.) Nutt. var. cuneatus | CECUC3 | Rhamnaceae | |
| buckeye | Aesculus L. | AESCU | Hippocastanaceae | |
| buckhorn cholla | Cylindropuntia acanthocarpa (Engelm. & Bigelow) F.M. Knuth var. acanthocarpa | CYACA2 | Cactaceae | |
| buckhorn cholla | Cylindropuntia acanthocarpa (Engelm. & Bigelow) F.M. Knuth var. major (Engelm. & Bigelow) Pinkava | CYACM | Cactaceae | |
| buck-horn cholla | Cylindropuntia acanthocarpa (Engelm. & Bigelow) F.M. Knuth | CYAC8 | Cactaceae | |
| buckleya | Buckleya Torr. | BUCKL | Santalaceae | |
| buckwheat milkvetch | Astragalus caricinus (M.E. Jones) Barneby | ASCA12 | Fabaceae | |
| buckwheat tree | Cliftonia monophylla (Lam.) Britt. ex Sarg. | CLMO2 | Cyrillaceae | |
| buckwheat vine | Brunnichia Banks ex Gaertn. | BRUNN | Polygonaceae | |
| buelliella lichen | Buelliella Fink | BUELL2 | Physciaceae | |
| buelliella lichen | Buelliella minimula (Tuck.) Fink | BUMI4 | Physciaceae | |
| buffalo hawthorn | Crataegus xanthophylla Sarg. | CRXA | Rosaceae | |
| buffalograss | Bouteloua dactyloides (Nutt.) J.T. Columbus | BODA2 | Poaceae | |
| bugle | Ajuga L. | AJUGA | Lamiaceae | |
| bugloss | Anchusa L. | ANCHU | Boraginaceae | |
| buglossoides | Buglossoides Moench | BUGLO | Boraginaceae | |
| bugseed | Corispermum L. | CORIS | Chenopodiaceae | |
| bulbil onion | Allium geyeri S. Wats. var. tenerum M.E. Jones | ALGET | Liliaceae | |
| bulblet-bearing water hemlock | Cicuta bulbifera L. | CIBU | Apiaceae | |
| bulbophyllum | Bulbophyllum Thouars | BULBO2 | Orchidaceae | |
| bulbothrix lichen | Bulbothrix Hale | BULBO3 | Parmeliaceae | |
| bulbothrix lichen | Bulbothrix isidiza (Nyl.) Hale | BUIS | Parmeliaceae | |
| bulbothrix lichen | Bulbothrix laevigatula (Nyl.) Hale | BULA7 | Parmeliaceae | |
| bulbous bittercress | Cardamine bulbosa (Schreb. ex Muhl.) B.S.P. | CABU3 | Brassicaceae | |
| bulbous springparsley | Cymopterus bulbosus A. Nels. | CYBU | Apiaceae | |
| bull horn acacia | Acacia collinsii Saff. | ACCO24 | Fabaceae | |
| bull thistle | Cirsium vulgare (Savi) Ten. | CIVU | Asteraceae | |
| bullatina lichen | Bullatina aspidota (Vainio) Vezda & Poelt | BUAS2 | Gomphillaceae | |
| bullatina lichen | Bullatina Vezda & Poelt | BULLA | Gomphillaceae | |
| bullhorn wattle | Acacia cornigera (L.) Willd. | ACCO5 | Fabaceae | |
| bull-oak | Allocasuarina luehmannii (R. T. Baker) L. A. S. Johnson | ALLU3 | Casuarinaceae | |
| Bull's coraldrops | Besseya bullii (Eat.) Rydb. | BEBU | Scrophulariaceae | |
| bulrush | Blysmus Panzer ex J.A. Schultes | BLYSM3 | Cyperaceae | |
| bumpy jointtail grass | Coelorachis tuberculosa (Nash) Nash | COTU | Poaceae | |
| bunch kerosene grass | Aristida contorta F. Muell. | ARCO34 | Poaceae | |
| bunchberry dogwood | Cornus canadensis L. | COCA13 | Cornaceae | |
| Bunge's hackberry | Celtis bungeana Blume | CEBU2 | Ulmaceae | |
| bunya bunya | Araucaria bidwillii Hook. | ARBI12 | Araucariaceae | |
| bupleurum | Bupleurum L. | BUPLE | Apiaceae | |
| burdock | Arctium L. | ARCTI | Asteraceae | |
| Burk's smooth rockcress | Arabis laevigata (Muhl. ex Willd.) Poir. var. burkii Porter | ARLAB | Brassicaceae | |
| Burlew's onion | Allium burlewii A. Davids. | ALBU | Liliaceae | |
| Burmese fishtail palm | Caryota mitis Lour. | CAMI36 | Arecaceae | |
| burningbush | Bassia scoparia (L.) A.J. Scott | BASC5 | Chenopodiaceae | |
| burr chervil | Anthriscus caucalis Bieb. | ANCA14 | Apiaceae | |
| burr parsley | Caucalis L. | CAUCA | Apiaceae | |
| burr reed sedge | Carex sparganioides Muhl. ex Willd. | CASP3 | Cyperaceae | |
| burro blanco | Capparis amplissima Lam. | CAAM13 | Capparaceae | |
| burrobush | Ambrosia dumosa (Gray) Payne | AMDU2 | Asteraceae | |
| bursera | Bursera Jacq. ex L. | BURSE | Burseraceae | |
| bush allamanda | Allamanda schottii Pohl | ALSC4 | Apocynaceae | |
| bush chinquapin | Chrysolepis sempervirens (Kellogg) Hjelmqvist | CHSE11 | Fagaceae | |
| bush croton | Croton fruticulosus Engelm. ex Torr. | CRFR | Euphorbiaceae | |
| bush rue | Cneoridium dumosum (Nutt.) Hook. f. ex Baill. | CNDU | Rutaceae | |
| bushclover dodder | Cuscuta pentagona Engelm. var. glabrior (Engelm.) Gandhi, Thomas & Hatch | CUPEG | Cuscutaceae | |
| bushclover dodder | Cuscuta pentagona Engelm. var. pubescens (Engelm.) Yuncker | CUPEP3 | Cuscutaceae | |
| bushkiller | Cayratia japonica (Thunb.) Gagnepain | CAJA7 | Vitaceae | |
| bushloving cryptantha | Cryptantha dumetorum (Greene ex Gray) Greene | CRDU | Boraginaceae | |
| Bush's goosefoot | Chenopodium berlandieri Moq. var. bushianum (Aellen) Cronq. | CHBEB3 | Chenopodiaceae | |
| Bush's poppymallow | Callirhoe bushii Fern. | CABU8 | Malvaceae | |
| Bush's sedge | Carex bushii Mackenzie | CABU5 | Cyperaceae | |
| bush-violet | Browallia eludens R.K. Van Devender & P.D. Jenkins | BREL5 | Solanaceae | |
| bushy bird's beak | Cordylanthus ramosus Nutt. ex Benth. | CORA5 | Scrophulariaceae | |
| bushy bluestem | Andropogon glomeratus (Walt.) B.S.P. | ANGL2 | Poaceae | |
| bushy bluestem | Andropogon glomeratus (Walt.) B.S.P. var. glomeratus | ANGLG2 | Poaceae | |
| bushy bluestem | Andropogon glomeratus (Walt.) B.S.P. var. hirsutior (Hack.) C. Mohr | ANGLH | Poaceae | |
| bushy bluestem | Andropogon glomeratus (Walt.) B.S.P. var. pumilus Vasey ex L.H. Dewey | ANGLP | Poaceae | |
| bushy cryptantha | Cryptantha racemosa (S. Wats.) Greene | CRRA2 | Boraginaceae | |
| bushy seaside tansy | Borrichia frutescens (L.) DC. | BOFR | Asteraceae | |
| butea | Butea Roxb. ex Willd. | BUTEA | Fabaceae | |
| Butler's sandparsley | Ammoselinum butleri (Engelm. ex S. Wats.) Coult. & Rose | AMBU | Apiaceae | |
| butomus | Butomus L. | BUTOM | Butomaceae | |
| Butte County western rosinweed | Calycadenia oppositifolia (Greene) Greene | CAOP | Asteraceae | |
| buttecandle | Cryptantha celosioides (Eastw.) Payson | CRCE | Boraginaceae | |
| butterfly mariposa lily | Calochortus venustus Dougl. ex Benth. | CAVE3 | Liliaceae | |
| butterfly milkweed | Asclepias tuberosa L. | ASTU | Asclepiadaceae | |
| butterfly milkweed | Asclepias tuberosa L. ssp. interior Woods. | ASTUI | Asclepiadaceae | |
| butterfly milkweed | Asclepias tuberosa L. ssp. tuberosa | ASTUT2 | Asclepiadaceae | |
| butterfly pea | Centrosema (DC.) Benth. | CENTR2 | Fabaceae | |
| butterfly tree | Bauhinia purpurea L. | BAPU | Fabaceae | |
| butterflybush | Buddleja L. | BUDDL2 | Buddlejaceae | |
| button mangrove | Conocarpus erectus L. | COER2 | Combretaceae | |
| button sedge | Carex bullata Schkuhr ex Willd. | CABU7 | Cyperaceae | |
| buttonbush | Cephalanthus L. | CEPHA | Rubiaceae | |
| buttonbush dodder | Cuscuta cephalanthi Engelm. | CUCE | Cuscutaceae | |
| buttonbush flatsedge | Cyperus cephalanthus Torr. & Hook. | CYCE | Cyperaceae | |
| buttonia | Buttonia MacKen ex Benth. | BUTTO | Scrophulariaceae | |
| buxbaumia moss | Buxbaumia aphylla Hedw. | BUAP70 | Buxbaumiaceae | |
| buxbaumia moss | Buxbaumia Hedw. | BUXBA2 | Buxbaumiaceae | |
| buxbaumia moss | Buxbaumia minakatae Okam. | BUMI6 | Buxbaumiaceae | |
| buxbaumia moss | Buxbaumia viridis (DC.) Moug. & Nestl. | BUVI2 | Buxbaumiaceae | |
| Buxbaum's sedge | Carex buxbaumii Wahlenb. | CABU6 | Cyperaceae | |
| byrsonima | Byrsonima L.C. Rich. ex Kunth | BYRSO | Malpighiaceae | |
| byssoloma lichen | Byssoloma leucoblepharum (Nyl.) Vainio | BYLE | Pilocarpaceae | |
| byssoloma lichen | Byssoloma subdiscordans (Nyl.) P. James | BYSU | Pilocarpaceae | |
| byssoloma lichen | Byssoloma Trevisan | BYSSO | Pilocarpaceae | |
| byssoloma lichen | Byssoloma tricholomum (Mont.) Zahlbr. | BYTR | Pilocarpaceae |
Source: U. S. Department of Agriculture
Back to NurseryTree.com Home Page
OTHER RESOURCES
Lists of Nurseries Around the Country
Washington State Business, Government, etc. Listings
User Agreement Add Your Business About Us Site Map
(c) 2007 NurseryTrees.com, LLC