Hermann
Schacht

Universität Bonn (Systematics Tree)


Ernst Heinrich
Haeckel

Universität Jena (Neurotree)


Nathanael
Pringsheim

University of Jena


Eduard Adolf
Strasburger

Universität Bonn






Heinrich Anton
de Bary

Kaiser-Wilhelms-Universität Straßburg




Louis
Agassiz

Harvard (Neurotree)


Burt G.
Wilder

Cornell (DevTree)




Calvin Henry
Kauffman

University of Michigan

Leon Hatchig
Leonian

West Virginia University
(Options)

Virgil Greene
Lilly

West Virginia University

Wilton Ray
Tenney

University of Richmond

Kenneth L.
Poff

Michigan State (Plant Biology Tree)

Leon LeonianX