| Isa (Irmgard) Degener |
Algae; Plants of Hawaii; Bryophytes; Spermatophytes |
| Otto Degener |
Pteridophytes; Spermatophytes; Flora of Hawaii; Bryophytes; Lichens |
| Piero Giuseppe Delprete |
Spermatophytes; Rubiaceae |
| Herbert M. Denslow |
Spermatophytes; Bryophytes |
| Jonathan Paul Dey |
Lichens |
| Aris B. Donaldson |
Spermatophytes; Custer's Expedition to the Black Hills |
| William R. Dudley |
Mycology; Spermatophytes; Bryophytes |
| Kent Parsons Dumont |
Mycology; Lichens |
| Per K. H. Dusén |
Spermatophytes; Bryophytes; Fossils; Pteridophytes; Lichens |
| Père Antoine Duss |
Mycology; Bryophytes; Spermatophytes |
| Franklin S. Earle |
Algae; Bryophytes; Mycology; Spermatophytes; Lichens |
| George Eiten |
Spermatophytes; Oxalis; Brazilian flora; Bryophytes; Lichens |
| Erik L. Ekman |
Pteridophytes; Spermatophytes; Fungi |
| Job B. Ellis |
Mycology; Lichens |
| Adolph D. E. Elmer |
All groups; Pteridophytes; Spermatophytes; Bryophytes; Mycology |
| Charles E. Fairman |
Mycology |
| Raymond M. Fatto |
Mycology |
| Bruce Fink |
Algae; Bryophytes; Lichens; Mycology; Spermatophytes |
| Seville Flowers |
Bryophytes; Pteridophytes; Algae; Spermatophytes; Mycology |
| Ana E. Franco-Molano |
Agaricales; Mycology |
| Merton A. Franklin |
Spermatophytes |
| John C. Frémont |
Spermatophytes |
| Theodore C. Frye |
Algae; Pteridophytes; Spermatophytes; Bryophytes; Phanerogams |
| Paul A. Fryxell |
Spermatophytes; Malvaceae; Gossypium |
| Wilson Ganev |
Spermatophytes |