Carl Hansen
Ostenfeld

Copenhagen University


Johannes
Iversen

Danish Geological Survey


Johannes
Iversen

Danish Geological Survey


Stanley A.
Cain

UC Santa Cruz (Terrestrial Ecology Tree)


Svend Thorkild
Andersen

Danish Geological Survey


Rolf
Nordhagen

University of Bergen (Plant Biology Tree)


Knut
Faegri

University of Bergen


Donald R.
Whitehead

Indiana University Bloomington






Clifton Fremont
Hodge

Clark University




Alden Holmes
Miller

UC Berkeley




Josselyn
Van Tyne

University of Michigan


Harold Ford
Mayfield

University of Michigan


Val
Nolan

Indiana University Bloomington


Irving H.
Blake

University of Nebraska






Donald S.
Farner

University of Washington (Neurotree)




Ellen D.
Ketterson

Indiana University Bloomington

Mark
Peterson

Viterbo University
(Options)

Mark PetersonX