Bolboschoenus maritimus (L.) Palla (Synonym : Scirpus compactus Hoffm.)

Family : Cyperaceae

Bolboschoenus planiculmis (F.Schmidt) T.V.Egorova (Synonym : Bolboschoenus maritimus (L.) Palla var. planiculmis (F.Schmidt) Jauzein)

Family : Cyperaceae

Boschniakia rossica (Cham. & Schltdl.) B.Fedtsch. (Synonym : Orobanche glabra (C.A.Mey. ex Bong.) Hook.)

Family : Orobanchaceae

Bothriochloa ischaemum (L.) Keng (Synonym : Sorghum ischaemum (L.) Kuntze)

Family : Poaceae

Bothriospermum secundum Maxim. (Synonym : Bothriospermum secundum Maxim. f. albiflorum Nakai)

Family : Boraginaceae

Bothriospermum zeylanicum (J.Jacq.) Druce (Synonym : Bothriospermum tenellum (Hornem.) Fisch. & C.A.Mey. var. asperugoides (Siebold & Zucc.) Maxim.)

Family : Boraginaceae

Botrychium boreale Milde (Synonym : Botrychium crassinervium Rupr.)

Family : Ophioglossaceae

Botrychium japonicum (Prantl) Underw. (Synonym : Botrychium daucifolium Wall. ex Hook. & Grev. var. japonicum Prantl)

Family : Ophioglossaceae

Botrychium lanceolatum (S.G.Gmel.) Ångstr. (Synonym : Botrychium manshuricum Ching)

Family : Ophioglossaceae

Botrychium lunaria (L.) Sw. (Synonym : Osmunda lunaria L.)

Family : Ophioglossaceae