| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| BLEPH3 | Blepharizonia Greene | blepharizonia | Asteraceae
|
| BLTR | Blepharoneuron tricholepis (Torr.) Nash | pine dropseed | Poaceae
|
| BLEPH4 | Blepharoneuron Nash | dropseed | Poaceae
|
| BLAR | Blepharostoma arachnoideum M. Howe | | Pseudolepicoleaceae
|
| BLTRB | Blepharostoma trichophyllum (L.) Dumort. ssp. brevirete (Bryhn & Kaal.) R. M. Schust. | | Pseudolepicoleaceae
|
| BLTRT | Blepharostoma trichophyllum (L.) Dumort. ssp. trichophyllum | | Pseudolepicoleaceae
|
| BLTR2 | Blepharostoma trichophyllum (L.) Dumort. | | Pseudolepicoleaceae
|
| BLEPH6 | Blepharostoma (Dumort. emend. Lindb.) Dumort. | | Pseudolepicoleaceae
|
| BLCI | Blephilia ciliata (L.) Benth. | downy pagoda-plant | Lamiaceae
|
| BLHIG | Blephilia hirsuta (Pursh) Benth. var. glabrata Fern. | hairy pagoda-plant | Lamiaceae
|
| BLHIH | Blephilia hirsuta (Pursh) Benth. var. hirsuta | hairy pagoda-plant | Lamiaceae
|
| BLHI | Blephilia hirsuta (Pursh) Benth. | hairy pagoda-plant | Lamiaceae
|
| BLSU | Blephilia subnuda R. Simmers & Kral | Cumberland pagoda-plant | Lamiaceae
|
| BLEPH5 | Blephilia Raf. | pagoda-plant | Lamiaceae
|
| BLPAA | Bletia patula Graham var. alba A.D. Hawkes | flor de pasmo | Orchidaceae
|
| BLPAP | Bletia patula Graham var. patula | flor de pasmo | Orchidaceae
|
| BLPA | Bletia patula Graham | flor de pasmo | Orchidaceae
|
| BLPU | Bletia purpurea (Lam.) DC. | pinepink | Orchidaceae
|
| BLETI | Bletia Ruiz & Pav�n | bletia | Orchidaceae
|
| BLST | Bletilla striata (Thunb.) Reichenb. f. | urn orchid | Orchidaceae
|
| BLETI2 | Bletilla Reichenb. f. | bletilla | Orchidaceae
|
| BLSA2 | Blighia sapida Koenig | akee | Sapindaceae
|
| BLIGH | Blighia Koenig | blighia | Sapindaceae
|
| BLAC70 | Blindia acuta (Hedw.) Bruch & Schimp. in B.S.G. | acute blindia moss | Seligeriaceae
|
| BLPO3 | Blindia polaris (Berggr.) Hag. | Seligeria polaris | Seligeriaceae
|
| BLIND2 | Blindia Bruch & Schimp. in B.S.G. | blindia moss | Seligeriaceae
|
| BLCA | Blitum capitatum L. | Chenopodium capitatum | Chenopodiaceae
|
| BLCH | Blitum chenopodioides L. | Chenopodium chenopodioides | Chenopodiaceae
|
| BLCR3 | Blitum cristatum F. Muell. | Chenopodium cristatum | Chenopodiaceae
|
| BLHA | Blitum hastatum Rydb. | Chenopodium overi | Chenopodiaceae
|
| BLVI2 | Blitum virgatum L. | Chenopodium foliosum | Chenopodiaceae
|
| BLAU2 | Bloomeria aurea Kellogg | Bloomeria crocea var. aurea | Liliaceae
|
| BLCL2 | Bloomeria clevelandii S. Wats. | Muilla clevelandii | Liliaceae
|
| BLCRA | Bloomeria crocea (Torr.) Coville var. aurea (Kellogg) Ingram | common goldenstar | Liliaceae
|
| BLCRC | Bloomeria crocea (Torr.) Coville var. crocea | common goldenstar | Liliaceae
|
| BLCRM | Bloomeria crocea (Torr.) Coville var. montana (Greene) Ingram | common goldenstar | Liliaceae
|
| BLCR | Bloomeria crocea (Torr.) Coville | common goldenstar | Liliaceae
|
| BLHU | Bloomeria humilis Hoover | dwarf goldenstar | Liliaceae
|
| BLOOM | Bloomeria Kellogg | goldenstar | Liliaceae
|
| BLBA2 | Blumea balsamifera (L.) DC. | nagi camphor | Asteraceae
|
| BLLA3 | Blumea lacera (Burman f.) DC. | blumea | Asteraceae
|
| BLLA | Blumea laciniata (Roxb.) DC. | cutleaf false oxtongue | Asteraceae
|
| BLSE2 | Blumea sessiliflora Dcne. | sessileleaf false oxtongue | Asteraceae
|
| BLVI | Blumea viscosa (P. Mill.) Badillo | clammy false oxtongue | Asteraceae
|
| BLUME | Blumea DC. | false oxtongue | Asteraceae
|
| BLVE | Blutaparon vermiculare (L.) Mears | silverhead | Amaranthaceae
|
| BLUTA | Blutaparon Raf. | blutaparon | Amaranthaceae
|
| BLRU3 | Blysmopsis rufa (Huds.) Oteng-Yeboah | Blysmus rufus | Cyperaceae
|
| BLRU | Blysmus rufus (Huds.) Link | red bulrush | Cyperaceae
|
| BLYSM3 | Blysmus Panzer ex J.A. Schultes | bulrush | Cyperaceae
|
| BLAU | Blyxa aubertii L.C. Rich. | roundfruit blyxa | Hydrocharitaceae
|
| BLOC2 | Blyxa octandra Planch. ex Thw. | blyxa | Hydrocharitaceae
|
| BLYXA | Blyxa Noronha ex Thouars | blyxa | Hydrocharitaceae
|
| BOBR3 | Bobea brevipes Gray | 'akupa | Rubiaceae
|
| BOELB | Bobea elatior Gaud. var. brevipes (Gray) Hbd. | Bobea brevipes | Rubiaceae
|
| BOELM | Bobea elatior Gaud. var. molokaiensis Rock | Bobea elatior | Rubiaceae
|
| BOEL3 | Bobea elatior Gaud. | 'ahakea lau nui | Rubiaceae
|
| BOGA | Bobea gaudichaudii (Cham. & Schlecht.) St. John & Herbst | Bobea elatior | Rubiaceae
|
| BOHO2 | Bobea hookeri Hbd. | Bobea sandwicensis | Rubiaceae
|
| BOMA4 | Bobea mannii Hbd. | Bobea brevipes | Rubiaceae
|
| BOPL | Bobea platypes Fosberg | Bobea elatior | Rubiaceae
|
| BOSA2 | Bobea sandwicensis (Gray) Hbd. | Hawai'i dogweed | Rubiaceae
|
| BOTI | Bobea timonioides (Hook. f.) Hbd. | 'ahakea | Rubiaceae
|
| BOBEA | Bobea Gaud. | 'ahakea | Rubiaceae
|
| BOCO5 | Bocconia cordata Willd. | Macleaya cordata | Papaveraceae
|
| BOFR2 | Bocconia frutescens L. | parrotweed | Papaveraceae
|
| BOJA2 | Bocconia japonica Andr� | Macleaya cordata | Papaveraceae
|
| BOCCO | Bocconia L. | bocconia | Papaveraceae
|
| BOPA8 | Boebera papposa (Vent.) Rydb. ex Britt. | Dyssodia papposa | Asteraceae
|
| BOCO4 | Boechera collinsii (Fern.) A.& D. L�ve | Arabis holboellii var. collinsii | Brassicaceae
|
| BOCR3 | Boechera crandallii (B.L. Robins.) W.A. Weber | Arabis crandallii | Brassicaceae
|
| BODE6 | Boechera demissa (Greene) W.A. Weber | Arabis demissa var. demissa | Brassicaceae
|
| BODI4 | Boechera divaricarpa (A. Nels.) A.& D. L�ve | Arabis divaricarpa | Brassicaceae
|
| BODR | Boechera drummondii (Gray) A.& D. L�ve | Arabis drummondii | Brassicaceae
|
| BOFES | Boechera fendleri (S. Wats.) W.A. Weber var. spatifolia (Rydb.) W.A. Weber | Arabis fendleri var. spatifolia | Brassicaceae
|
| BOFE | Boechera fendleri (S. Wats.) W.A. Weber | Arabis fendleri var. fendleri | Brassicaceae
|
| BOFE2 | Boechera fernaldiana (Rollins) W.A. Weber | Arabis fernaldiana var. fernaldiana | Brassicaceae
|
| BOGU | Boechera gunnisoniana (Rollins) W.A. Weber | Arabis gunnisoniana | Brassicaceae
|
| BOLE5 | Boechera lemmonii (S. Wats.) W.A. Weber | Arabis lemmonii var. lemmonii | Brassicaceae
|
| BOLI6 | Boechera lignifera (A. Nels.) W.A. Weber | Arabis lignifera | Brassicaceae
|
| BOOX | Boechera oxylobula (Greene) W.A. Weber | Arabis oxylobula | Brassicaceae
|
| BOPA14 | Boechera pallidifolia (Rollins) W.A. Weber | Arabis pallidifolia | Brassicaceae
|
| BOPE5 | Boechera pendulina (Greene) W.A. Weber | Arabis pendulina var. pendulina | Brassicaceae
|
| BOPE6 | Boechera perennans (S. Wats.) W.A. Weber | Arabis perennans | Brassicaceae
|
| BOPUP | Boechera pulchra (M.E. Jones ex S. Wats.) W.A. Weber ssp. pallens (M.E. Jones) W.A. Weber | Arabis pulchra var. pallens | Brassicaceae
|
| BOPU3 | Boechera pulchra (M.E. Jones ex S. Wats.) W.A. Weber | Arabis pulchra var. pulchra | Brassicaceae
|
| BORE6 | Boechera retrofracta (Graham) A.& D. L�ve | Arabis holboellii var. retrofracta | Brassicaceae
|
| BOSE3 | Boechera selbyi (Rydb.) W.A. Weber | Arabis selbyi | Brassicaceae
|
| BOTE8 | Boechera tenuis (B�cher) A.& D. L�ve | Arabis holboellii var. retrofracta | Brassicaceae
|
| BOVI4 | Boechera vivariensis (Welsh) W.A. Weber | Arabis fernaldiana var. fernaldiana | Brassicaceae
|
| BOAU | Boehmeria austrina Small | Boehmeria cylindrica | Urticaceae
|
| BOCYD | Boehmeria cylindrica (L.) Sw. var. drummondiana (Weddell) Weddell | Boehmeria cylindrica | Urticaceae
|
| BOCYS | Boehmeria cylindrica (L.) Sw. var. scabra Porter | Boehmeria cylindrica | Urticaceae
|
| BOCY | Boehmeria cylindrica (L.) Sw. | smallspike false nettle | Urticaceae
|
| BODE5 | Boehmeria decurrens Small | Boehmeria cylindrica | Urticaceae
|
| BODR2 | Boehmeria drummondiana Weddell | Boehmeria cylindrica | Urticaceae
|
| BOGRC | Boehmeria grandis (Hook. & Arn.) Heller var. cuneata Skottsberg | Boehmeria grandis | Urticaceae
|
| BOGRK | Boehmeria grandis (Hook. & Arn.) Heller var. kauaiensis Skottsberg | Boehmeria grandis | Urticaceae
|
| BOGR3 | Boehmeria grandis (Hook. & Arn.) Heller | Hawai'i false nettle | Urticaceae
|
| BONI2 | Boehmeria nivea (L.) Gaud. | Chinese grass | Urticaceae
|
| BORE3 | Boehmeria repens (Griseb.) Weddell | West Indian false nettle | Urticaceae
|