Barbula ehrenbergii - Botrychium crenulatum
- Barbula ehrenbergii
- Barbula eustegia
- Barbula indica
- Barbula indica var. gregaria
- Barbula indica var. indica
- Barbula unguiculata
- Barkleyanthus
- Barkleyanthus salicifolius
- Barleria
- Barleria cristata
- Barleria lupulina
- Barleria opaca
- Barleria prionitis
- Barleriola
- Barleriola solanifolia
- Barringtonia
- Barringtonia asiatica
- Barringtonia racemosa
- Barringtonia samoensis
- Bartlettia
- Bartlettia scaposa
- Bartlettina
- Bartonia
- Bartonia paniculata
- Bartonia paniculata ssp. iodandra
- Bartonia paniculata ssp. paniculata
- Bartonia texana
- Bartonia verna
- Bartonia virginica
- Bartramia
- Bartramia glauca
- Bartramia halleriana
- Bartramia ithyphylla
- Bartramia microstoma
- Bartramia pomiformis
- Bartramia stricta
- Bartramia subulata
- Bartramidula
- Bartramidula wilsonii
- Bartramiopsis
