| Howard J. Banker |
Algae; Mycology; Spermatophytes |
| Rupert C. Barneby |
Spermatophytes; Fabaceae |
| John H. Barnhart |
Spermatophytes; Bryophytes |
| Timothy J. Baroni |
Mycology; Agaricales |
| Margaret E. Barr |
Mycology |
| Joseph Barratt |
Spermatophytes; Salix; Bryophytes |
| A. T. Beals |
Mosses; Spermatophytes; Bryophytes |
| Janice C. Beatley |
Spermatophytes |
| Albert R. Bechtel |
Spermatophytes; Mycology; Bryophytes |
| Hans T. Beck |
Spermatophytes; Sapindaceae; Paullinia; floristics of northwestern Ecuador, southern Africa, and upper midwestern U.S.; economic botany; ethnobotany |
| Romeu P. Belém |
Spermatophytes |
| Bradley C. Bennett |
Spermatophytes; Ethnobotany |
| Alwin Berger |
Spermatophytes; Agave |
| George N. Best |
Bryophytes; Spermatophytes |
| Eugene P. Bicknell |
Spermatophytes; Characeae; Bryophytes |
| Howard E. Bigelow |
Agaricales; Mycology |
| Jacques S. Blanchet |
Spermatophytes |
| Henry N. Bolander |
Algae; Bryophytes; Cryptogams; Musci; Orchidaceae; Phanerogams; Spermatophytes |
| Brian M. Boom |
Spermatophytes; Theaceae; Rubiaceae; Bryophytes; Lichens |
| Lois Brako |
Mycology; Bryophytes; Lichens |
| Ruth O. S. Breen |
Algae; Bryophytes |
| Nathaniel Lord Britton |
Algae; Bryophytes; Lichens; Mycology; Phanerogams; Pteridophytes; Spermatophytes |
| Elizabeth G. Britton |
Algae; Bryophytes; Pteridophytes; Spermatophytes; Lichens |
| William Russel Buck |
Algae; Bryophytes; Fungi; Lichens; Pteridophytes; Spermatophytes |
| William J. Burchell |
Bryophytes; Pteridophytes; Spermatophytes; Orchidaceae |