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William Smith
Clark
Massachusetts Agricultural College (Chemistry Tree)

Friedrich
Wöhler
Universität Göttingen (Chemistry Tree)


Henry Bradford
Nason
RPI (Marine Ecology Tree)


Davis Wasgatt
Clark
Amenia Seminary (Terrestrial Ecology Tree)

Joseph
Cummings
Northwestern (Terrestrial Ecology Tree)

John
Johnston
Bowdoin College (Chemistry Tree)


Alexander
Winchell
Vanderbilt (Terrestrial Ecology Tree)


Thomas Chrowder
Chamberlin
Chicago (Marine Ecology Tree)


James Dwight
Dana
Yale (Terrestrial Ecology Tree)


Edward Thomson
Nelson
Ohio Wesleyan (Terrestrial Ecology Tree)


John Merle
Coulter
Chicago (Marine Ecology Tree)


Henry Chandler
Cowles
Chicago (Marine Ecology Tree)


Richard
Owen
British Museum of Natural History


Jeffries
Wyman
Harvard (Neurotree)


Oliver Wendell
Holmes
Harvard Medical School (Neurotree)

Jacob
Bigelow
University of Pennsylvania Medical School (Neurotree)


Henry Jacob
Bigelow
MGH (Neurotree)


John
Torrey
Columbia (Chemistry Tree)


Asa
Gray
Harvard (Chemistry Tree)


Georg
Fresenius
Naturmuseum Senckenberg (Mycotree)

Alexander Heinrich
Braun
Universität Berlin (Physiology Academic Tree)

Hugo
von Mohl
Universität Tübingen (Physiology Academic Tree)


Heinrich Anton
de Bary
Kaiser-Wilhelms-Universität Straßburg (Mycotree)


William Gilson
Farlow
Harvard (Mycotree)


B.D.
Halsted
Rutgers, New Brunswick

George W.
Martin
University of Iowa, Iowa City, IA
(Options)


Walter J.
Sundburg
University of Southern Illinois Carbondale

John W.
Taylor
UC Berkeley

Donald P.
Rogers
UIUC (Microtree)

Anthony E.
Liberta
Illinois State University (Mycotree)

F Brent
Reeves
Colorado State (Microtree)

Iris D.
Charvat
UMN (Microtree)

George MartinX