Ludolph Christian
Treviranus

Schlesische Friedrich-Wilhelms-Universität zu Breslau


Heinrich Friedrich
Link

Universität Berlin


Heinrich
Göppert

University of Breslau


Adolf
Engler

Royal Botanical Gardens and Museums of Berlin


Jesse More
Greenman

Washington University

Carl C.
Epling

UCLA
(Options)

Harlan
Lewis

UCLA (Systematics Tree)

John Robert
Haller

UC Santa Barbara (Systematics Tree)

Peter H.
Raven

Missouri Botanical Garden (Evolution Tree)


Nam-Hai
Chua

Rockefeller



Ursula
Goodenough

Washington University (Cell Biology Tree)

Carl EplingX