| Botanical Name |
Authority |
| Baccharis vanessae |
ESA-T |
| Backbergia (= Pachycereus) militaris |
CITES |
| Bakerella spp. |
Parasitic |
| Balanophora spp. |
Parasitic |
| Balfourodendron spp. |
NAPPRA |
| Balmea stormiae |
CITES |
| Balsamocitrus spp. |
NAPPRA |
| Bambusa spp. |
NAPPRA |
| Bambusae tribe |
NAPPRA |
| Banara vanderbiltii |
ESA-E |
| Baptisia arachnifera |
ESA-E |
| Barathranthus spp. |
Parasitic |
| Barbarea verna |
FSA-V |
| Bardotia spp. |
Parasitic |
| Barosma spp. |
Rut. |
| Bartsia spp. |
Parasitic |
| Bartsiella spp. |
Parasitic |
| Bassia prostrata |
FSA-A |
| Baumia spp. |
Parasitic |
| Bdallophytum ssp. |
Parasitic |
| Beaucarnea spp. |
Parasitic |
| Bellarida spp. |
Parasitic |
| Benthamina spp. |
Parasitic |
| Berberis spp. |
NAPPRA |
| Berberis nevinii |
ESA-E |
| Berberis pinnata ssp. insularis |
ESA-E |
| Bergera spp. |
NAPPRA |
| Berhautia spp. |
Parasitic |
| Berkheya rigida |
NAPPRA |
| Beta vulgaris ssp. vulgaris |
FSA-V |
| Betula uber |
ESA-T |
| Bidens amplectans |
ESA-E |
| Bidens campylotheca ssp. Waihoiensis |
ESA-E |
| Bidens conjuncta |
ESA-E |
| Bidens hillebrandiana ssp. hillebrandiana |
ESA-E |
| Bidens micrantha ssp. ctenophylla; also ssp. kalealaha |
ESA-E |
| Bidens subalternans |
NAPPRA |
| Bidens wiebkei |
ESA-E |
| Blennosperma bakeri |
ESA-E |
| Boechera serotina |
ESA-E |
| Boenninghausenia spp. |
NAPPRA |
| Boltonia decurrens |
ESA-T |
| Bonamia grandiflora |
ESA-T |
| Bonamia menziesii |
ESA-E |
| Bonia (= Bambusa) spp. |
NAPPRA |
| Boninia spp. |
NAPPRA |
| Borinda spp. |
NAPPRA |
| Bornmuellerantha spp. |
Parasitic |
| Boronia spp. |
NAPPRA |
| Borreria (= Spermacoce) alata |
NW |
| Boschniakia spp. |
Parasitic |
| Bosistoa spp. |
NAPPRA |
| Bothriochloa spp. |
NAPPRA |
| Bottegoa spp. |
NAPPRA |
| Bouchardatia spp. |
NAPPRA |
| Bouteloua curtipendula |
FSA-A |
| Bouteloua dactyloides |
FSA-A |
| Bouteloua gracilis |
FSA-A |
| Bouzetia spp. |
NAPPRA |
| Brachlaria ramose |
FSA-A |
| Brachynema spp. |
Parasitic |
| Brachystachyum (= Semiarundinaria) spp. |
NAPPRA |
| Brachystigma spp. |
Parasitic |
| Brandisia spp. |
Parasitic |
| Brassica juncea |
FSA-A,FSA-V |
| Brassica napus (incl.var. annua, biennis) |
FSA-A |
| Brassica napus v. napobrassica |
FSA-A |
| Brassica napus v. pabularia |
FSA-A |
| Brassica nigra |
FSA-A |
| Brassica oleracea v. acephala |
FSA-V |
| Brassica oleracea v. alboglabra |
FSA-V |
| Brassica oleracea v. botrytis; v. capitata; v. costata |
FSA-V |
| Brassica oleracea v. gemmifera |
FSA-V |
| Brassica oleracea v. gongylodes; v. italica |
FSA-V |
| Brassica periviridis v. periviridis (syn. B. rapa ssp. nipposinica) |
FSA-V |
| Brassica rapa ssp. campestris |
FSA-V |
| Brassica rapa ssp. chinensis |
FSA-V |
| Brassica rapa ssp. pekinensis |
FSA-V |
| Brassica rapa ssp. rapa; ssp.. oleifera; ssp pekinensis; ssp. rapa |
FSA-A,FSA-V |
| Brassica rapa ssp. sylvestris |
FSA-A |
| Brickellia mosieri |
ESA-E |
| Brighamia insignis |
ESA-E |
| Brighamia rockii |
ESA-E |
| Brodiaea filifolia |
ESA-T |
| Brodiaea pallida |
ESA-T |
| Brombya spp. |
NAPPRA |
| Bromus arvensis |
FSA-A |
| Bromus biebersteinii |
FSA-A |
| Bromus carinatus var. marginatus |
FSA-A |
| Bromus catharticus |
FSA-A |
| Bromus hordeaceus |
FSA-A |
| Bromus inermis |
FSA-A |
| Bromus marginatus |
FSA-A |
| Bromus pectinatus |
NAPPRA |
| Burguiera gymnorhiza |
NAPPRA |
| Buchnera spp. |
Parasitic |
| Buckleya spp. |
Parasitic |
| Buchloe dactyloides |
FSA-A |
| Buchnera spp. |
Parasitic |
| Bulbophyllum guamense |
ESA-T |
| Bungea spp. |
Parasitic |
| Burkillanthus spp. |
NAPPRA |
| Burnabambus (= Sinarundinaria) ssp. |
NAPPRA |
| Butania (= Sinarundinaria) ssp. |
NAPPRA |
| Buttonia spp. |
Parasitic |
| Buxus vahlii |
ESA-E |
