| William Russell Anderson |
Spermatophytes; Pteridophytes; Malpighiaceae; Lichens |
| Kate E. Armstrong |
Manilkara (Sapotaceae); Pteridophytes; Spermatophytes |
| Daniel E. Atha |
Spermatophytes; Pteridophytes; Polygonaceae; Acalypha; Flora of North America |
| 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 |
| Edward S. Burgess |
Pteridophytes; Spermatophytes; Aster |
| Alvan Wentworth Chapman |
Algae; Angiosperms; Bryophytes; Pteridophytes; Spermatophytes |
| Otto Degener |
Pteridophytes; Spermatophytes; Flora of Hawaii; Bryophytes; Lichens |
| Per K. H. Dusén |
Spermatophytes; Bryophytes; Fossils; Pteridophytes; Lichens |
| Erik L. Ekman |
Pteridophytes; Spermatophytes; Fungi |
| Adolph D. E. Elmer |
All groups; Pteridophytes; Spermatophytes; Bryophytes; Mycology |
| Seville Flowers |
Bryophytes; Pteridophytes; Algae; Spermatophytes; Mycology |
| Theodore C. Frye |
Algae; Pteridophytes; Spermatophytes; Bryophytes; Phanerogams |
| George Gardner |
Algae; Bryophytes; Pteridophytes; Spermatophytes |
| Henry A. Gleason |
Pteridophytes; Spermatophytes; Melastomataceae; Bryophytes |
| Abel J. Grout |
Bryophytes; Mycology; Pteridophytes; Musci; Ferns; Spermatophytes |
| Roland M. Harper |
Algae; Bryophytes; Pteridophytes; Spermatophytes |
| Amos Arthur Heller |
Algae; Bryophytes; Mycology; Pteridophytes; Spermatophytes |
| Albert S. Hitchcock |
Spermatophytes; Poaceae; Pteridophytes; Bryophytes |
| George S. Jenman |
Pteridophytes; Spermatophytes; Phanerogams; Bryophytes |
| Marcus E. Jones |
Mycology; Pteridophytes; Spermatophytes |
| Ellsworth P. Killip |
Algae; Bryophytes; Pteridophytes; Spermatophytes; Lichens |
| Frère León |
Algae; Bryophytes; Mycology; Pteridophytes; Spermatophytes |
| Wayne D. Longbottom |
Spermatophytes; Bryophytes; Pteridophytes; Eastern North America |
| Kenneth K. Mackenzie |
Pteridophytes; Spermatophytes; Cyperaceae; Carex; Bryophytes |
| Bassett Maguire |
Algae; Bryophytes; Pteridophytes; Spermatophytes; Lichens |
| Elmer Drew Merrill |
Algae; Bryophytes; Mycology; Pteridophytes; Spermatophytes; Lichens |
| John T. Mickel |
Pteridophytes; Spermatophytes |
| Robbin C. Moran |
Pteridophytes |
| Aven Nelson |
Algae; Mycology; Pteridophytes; Spermatophytes |
| Eugene Abraham Rau |
Bryophytes; Mycology; Algae; Musci; Pteridophytes; Phanerogams; Cryptogams |
| Clyde F. Reed |
Algae; Bryophytes; Pteridophytes; Spermatophytes; Lichens |
| Per Axel Rydberg |
Algae; Bryophytes; Mycology; Phanerogams; Pteridophytes; Spermatophytes |
| John A. Shafer |
Algae; Pteridophytes; Spermatophytes; Mycology; Bryophytes |
| John Kunkel Small |
Algae; Bryophytes; Pteridophytes; Spermatophytes; Lichens |
| Lyman B. Smith |
Spermatophytes; Pteridophytes; Lichens |
| Albert C. Smith |
Algae; Bryophytes; Lichens; Pteridophytes; Spermatophytes |
| Richard Spruce |
Bryophytes; Pteridophytes; Spermatophytes; Lichens |
| Julian A. Steyermark |
Pteridophytes; Spermatophytes; Angiosperms; Bombacaceae; Bryophytes; Algae; Characeae; Lichens |
| John Torrey |
Algae; Bryophytes; Euphorbiaceae; Mycology; Pteridophytes; Spermatophytes |
| Edward Tuckerman |
Mycology; Pteridophytes; Spermatophytes; Lichens; Bryophytes |
| Lucien M. Underwood |
Algae; Bryophytes; Mycology; Pteridophytes; Spermatophytes |
| Sereno Watson |
Algae; Bryophytes; Euphorbiaceae; Pteridophytes; Spermatophytes; Clarence King Expedition |
| Alphonso W. Wood |
Pteridophytes; Spermatophytes |
| Charles Wright |
Algae; Bryophytes; Lichens; Mycology; Pteridophytes; Spermatophytes |
| Truman G. Yuncker |
Algae; Cuscuta; Piperaceae; Pteridophytes; Spermatophytes |