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Asa
Gray
Harvard (Chemistry Tree)

George
Engelmann
(Mycotree)

Thure Ludwig Theodor
Kumlien
Albion Academy; Wisconsin Natural History Society (Evolution Tree)


Edward Lee
Greene
University of California at Berkeley; Smithsonian; Catholic University of America


William Gilson
Farlow
Harvard (Mycotree)




Willis Linn
Jepson
UC Berkeley (Evolution Tree)


Lincoln
Constance
UC Berkeley

Frank Walton
Gould
Texas A & M
(Options)

Frank GouldX