August
Kekulé

Ghent University


Adolf
von Baeyer

University of Munich


Hermann Emil
Fischer

Universität Berlin


Asa
Gray

Harvard


Charles Reid
Barnes

Chicago (Plant Biology Tree)


Adolf
von Baeyer

University of Munich




Herman Augustus
Spoehr

Carnegie Institution of Washington



Samuel
Siegel

University of Arkansas, Fayetteville
(Options)

Gerard V.
Smith

Southern Illinois University

Scott W.
Cowley

Colorado School of Mines

Samuel SiegelX