| Julian A. Steyermark |
Pteridophytes; Spermatophytes; Angiosperms; Bombacaceae; Bryophytes; Algae; Characeae; Lichens |
| Arlow B. Stout |
Bryophytes; Spermatophytes; Hemerocallis |
| William C. Sturgis |
Algae; Cryptogams; Mycology; Bryophytes; Spermatophytes |
| William S. Sullivant |
Bryophytes; Algae; Mosses; Spermatophytes |
| David R. Sumstine |
Algae; Mycology; Spermatophytes |
| George H. H. Tate |
Mammology; Spermatophytes; Bryophytes; Lichens |
| Benjamin C. Tharp |
Algae; Mycology; Spermatophytes |
| William Wayt Thomas |
Cyperaceae; Simaroubaceae; Spermatophytes; Bryophytes; Lichens |
| Arnold Gerard Tiehm |
Spermatophytes |
| Benjamin Marland Torke |
Spermatophytes; Swartzia (Fabaceae); Salvia |
| Raymond H. Torrey |
Spermatophytes; Bryophytes; Lichens |
| John Torrey |
Algae; Bryophytes; Euphorbiaceae; Mycology; Pteridophytes; Spermatophytes |
| Erin Anne Tripp |
Acanthaceae; Algae; Bryophytes; Lichens; Spermatophytes |
| Edward Tuckerman |
Mycology; Pteridophytes; Spermatophytes; Lichens; Bryophytes |
| Lucien M. Underwood |
Algae; Bryophytes; Mycology; Pteridophytes; Spermatophytes |
| Anna M. Vail |
Leguminosae; Asclepiadaceae; Spermatophytes; Characeae; Bryophytes |
| Arthur C. Waghorne |
Spermatophytes; Bryophytes; Lichens |
| Jay B. Walker |
Spermatophytes; Lamiaceae |
| Sereno Watson |
Algae; Bryophytes; Euphorbiaceae; Pteridophytes; Spermatophytes; Clarence King Expedition |
| Winona H. Welch |
Algae; Bryophytes; Spermatophytes; Lichens |
| Stanley L. Welsh |
Spermatophytes |
| Margaret J. Williams |
Spermatophytes |
| Robert Statham Williams |
Lichens; Bryophytes; Spermatophytes |
| Percy Wilson |
Algae; Mycology; Spermatophytes; Bryophytes; Lichens |
| Alphonso W. Wood |
Pteridophytes; Spermatophytes |