| 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 |
| George Gardner |
Algae; Bryophytes; Pteridophytes; Spermatophytes |
| Albert O. Garrett |
Algae; Mycology; Spermatophytes |
| Alwyn H. Gentry |
Bignoniaceae; Spermatophytes; Bryophytes |
| Leland J. Gier |
Algae; Bryophytes; Cryptogams; Phanerogams |
| Auguste F. M. Glaziou |
Spermatophytes; Bryophytes; Lichens |
| Henry A. Gleason |
Pteridophytes; Spermatophytes; Melastomataceae; Bryophytes |
| Sherel Goodrich |
Spermatophytes |
| Roger D. Goos |
Mycology |
| Jean-Jaques de Granville |
Spermatophytes |
| Abel J. Grout |
Bryophytes; Mycology; Pteridophytes; Musci; Ferns; Spermatophytes |
| John G. Guccion |
Lichens; Bryophytes |
| Robert Hagelstein |
Algae; Mycology; Myxomycetes; Bryophytes |
| Roy Edward Halling |
Agaricales; Mycology; Boletales; Bryophytes; Lichens |
| Inez M. Haring |
Bryophytes |
| Raymond M. Harley |
Algae; Lamiaceae; Spermatophytes; Bryophytes |
| Roland M. Harper |
Algae; Bryophytes; Pteridophytes; Spermatophytes |
| Robert A. Harper |
Algae; Fungi; Spermatophytes |
| William H. Harris |
Jamaica flora; Algae; Bryophytes; Mycology; Spermatophytes; Lichens |
| Richard Clinton Harris |
Algae; Lichens; Mycology |
| Hermann E. Hasse |
Lichens; Bryophytes; Mycology; Spermatophytes |
| Emile Hassler |
Spermatophytes |
| Gert Guenter Hatschbach |
Algae; Spermatophytes; Lichens |
| Caroline C. Haynes |
Bryophytes |
| Amos Arthur Heller |
Algae; Bryophytes; Mycology; Pteridophytes; Spermatophytes |
| Andrew J. Henderson |
Spermatophytes; Arecaceae |
| LeRoy K. Henry |
Algae; Mycology; Spermatophytes |
| Augustine Henry |
Spermatophytes; Bryophytes |
| Frederick Joseph Hermann |
Bryophytes; Spermatophytes; Carex; Cyperaceae; Bryophytes |
| Larry C. Higgins |
Spermatophytes |
| Albert S. Hitchcock |
Spermatophytes; Poaceae; Pteridophytes; Bryophytes |
| Charles Leo Hitchcock |
Spermatophytes; Flora NW USA |
| Malcolm F. Hodges |
Lichens |
| Wilson Hoehne |
Spermatophytes; Arecaceae |
| Frederico C. Hoehne |
Spermatophytes; Bryophytes |
| Kjeld A. Holmen |
Bryophytes; Musci |
| Patricia K. Holmgren |
Spermatophytes |
| Noel H. Holmgren |
Scrophulariaceae; Intermountain Flora; Spermatophytes |
| John M. Holzinger |
Bryophytes; Spermatophytes; Mosses |
| Grace E. Howard |
Mycology; Spermatophytes; Bryophytes; Lichens |
| Marshall A. Howe |
Algae; Bryophytes; Mycology |
| Robert Root Ireland, Jr. |
Bryophytes |
| Howard S. Irwin |
Spermatophytes; Legumes; Lichens |
| Edwin James |
Spermatophytes; Major Stephen H. Long Expedition |
| Jomar Gomes Jardim |
Spermatophytes; Rubiaceae |
| George S. Jenman |
Pteridophytes; Spermatophytes; Phanerogams; Bryophytes |
| George T. Johnson |
Lichens; Bryophytes |
| Marcus E. Jones |
Mycology; Pteridophytes; Spermatophytes |
| Jacquelyn A. Kallunki |
Spermatophytes; Lichens |
| David D. Keck |
Spermatophytes |
| William Ashbrook Kellerman |
Algae; Bryophytes; Mycology; Spermatophytes |