©ra\> Ibertmrium 
Ibarvarb ^University 
B. L. ROBINSON, Curator 
Asa Gray Prof. Syst. Bot. 
M. L. FERNALD, 
Fisher Prof. Nat. Hist. (Bot.) 
CHARLES A. WEATHERBY, Assistant 
IVAN M. JOHNSTON, Assistant 
RUTH D. SANDERSON, Librarian 
LESLEY C. BROWN, Bibliographer 
LILY M. PERRY, Assistant 
CAMBRIDGE, MASSACHUSETTS. U.S.A. 
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