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William Crawford
Williamson
University of Manchester (Evolution Tree)


Albert Charles
Seward
Cambridge (Evolution Tree)


Edward Alexander Newell
Arber
Cambridge (Evolution Tree)


Hugh Hamshaw
Thomas
Cambridge (Evolution Tree)


Heinrich
Göppert
University of Breslau (Chemistry Tree)


Adolf
Engler
Royal Botanical Gardens and Museums of Berlin (Chemistry Tree)


Jesse More
Greenman
Washington University (Chemistry Tree)


Asa
Gray
Harvard


Sereno
Watson
Harvard (Evolution Tree)


Merritt Lyndon
Fernald
Harvard (Evolution Tree)


Robert Everard
Woodson
(Systematics Tree)

Henry Nathaniel
Andrews, Jr.
University of Connecticut
(Options)

Henry Andrews, Jr.X