| Edward J. Alexander |
Algae; Spermatophytes; Iridaceae |
| Miguel N. Alexiades |
Spermatophytes; Ethnobotanical studies |
| Harry A. Allard |
Spermatophytes; Bryophytes |
| John F. Allen |
Spermatophytes |
| John Alphaeus Allen |
Algae; Bryophytes; Spermatophytes |
| Timothy F. Allen |
Algae; Characeae; Spermatophytes |
| Oscar Dana Allen |
Algae; Characeae; Bryophytes; Spermatophytes |
| Bruce Hampton Allen |
Bryophytes; Lichens |
| Jessica L. Allen |
Lichens |
| Joseph F. Ammirati |
Mycology |
| André Márcio Amorim |
Bromeliaceae; Sapindaceae; Dichapetalaceae |
| Gladys P. Anderson |
Lichens; Spermatophytes; Bryophytes |
| Lewis E. Anderson |
Bryophytes |
| Dr. Charles L. Anderson |
Algae |
| William Russell Anderson |
Spermatophytes; Pteridophytes; Malpighiaceae; Lichens |
| Carol R. Annable |
Poaceae; Spermatophytes |
| Kate E. Armstrong |
Manilkara (Sapotaceae); Pteridophytes; Spermatophytes |
| Rosita Arvigo |
Medicinal Plants |
| Daniel E. Atha |
Spermatophytes; Pteridophytes; Polygonaceae; Acalypha; Flora of North America |
| Nephi Duane Atwood |
Spermatophytes; Hydrophyllaceae; Phacelia |
| Coe F. Austin |
Bryophytes; Lemnaceae; Spermatophytes; Lichens |
| Charles F. Baker |
Algae; Mycology; Spermatophytes; Bryophytes |
| William L. Balée |
Spermatophytes; Ethnobotanical studies |
| Michael J. Balick |
Spermatophytes; Economic Botany |
| Miguel Bang |
Spermatophytes; Bryophytes; Lichens |
| 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 |