ol. LIV 



THE 



November 1912 



Editor: JOHN M. COULTER 



CONTENTS 



The Development of Blastocladia strangulata, n. sp. 



J. T. Barrett 



The Orchid Embryo Sac 



Lester W. Sharp 



Growth Studies in Forest Trees 



Harry P, Brown 



Contributions from the Rocky Mountain Herbarium- XII 



% 



Two Species of Bowenia 



Aven Nelson 

 Charles J. Chamberlain 



Briefer Articles 



A New Species of Andropogon 



Evaporation and the Stratification of Vegetation 



A. S. Hitchcock 

 George D. Fuller 



Current Literature 



The University of Chicago Press 



CHICAGO, ILLINOIS 



Agent* 



THE CAMBRIDGE UNIVERSITY PRESS, London and Edinburgh 



WILLIAM WESLEY & SON, London 



TH. STAUFFER. Leipzig 

 THE MARUZENKABUSHIKI-KAiSHA, Tokyo. Osaka, Kyoto 



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