Vol. VI 



XOYKMBER, 1920 



No. 2 



ENTRIES 474-S78 



Botanical Abstracts 



A monthly serial furnishing abstracts and citations of publications in the international 



field of botany in its broadest sense 



PUBLISHED MONTHLY UNDER THE DIRECTION OF 



THE BOARD OF CONTROL OF BOTANICAL ABSTRACTS, INC. 



A democratically constituted organization, with members representing many societies 



interested in plants. 



THE SOCIETIES NOW REPRESENTED 



AND 



THE MEMBERS OF THE BOARD OF CONTROL 



(The Executive Committee for 19t0 are indicated by asterisks) 



Paleontological Society of America. 



E. W. Berry, Johns Hopkins University, 

 Baltimore, Maryland. 



F. H. Knowlton, U. S. National Museum, 

 Washington, D. C. 



American Association for the Advancement 

 of Science, Section G. 

 *B. E. Livingston, Johns Hopkins Uni- 

 versity, Baltimore, Maryland. 

 A. F. Blakeslee, Station for Experimental 

 Evolution, Cold Spring Harbor, Long 

 Island, New York. 



Botanical Society of America, General 

 Section. 

 B. M. Davis, University of Michigan, Ann 



Arbor, Michigan. 

 *R. A. Harper, Columbia University, 

 New York City. 



Botanical Society of America, Physiology 

 Section. 

 B. M. Dtjggar, Missouri Botanical 



Garden, St. Louis, Missouri. 

 W. J. V. Osterhout, Harvard University, 

 Cambridge, Massachusetts. 



Botanical Society of America, Systematic 



Section. 

 J. H. Barnhart, New York Botanical 



Garden, Bronx Park, New York City. 

 A. S. Hitchcock, U. S. Bureau of Plant 



Industry, Washington, D. C. 



American Society of Naturalists. 

 J. A. Harris, Station for Experimental 



Evolution, Cold Spring Harbor, Long 



Island, New York. 

 E. M. East, Harvard University, Bussey 



Institution, Forest Hills, Boston, 



Massachusetts. 



Ecological Society of America. 

 Forrest Shreve, Desert Laboratory, 

 Carnegie Institution, Tucson, Arizona. 

 •Geo. H. Nichols, Yale University, New 

 Haven, Connecticut. 



At large. 

 W. A. Orton, U. S. Bureau of Plant Indus 

 try, Washington, D. C. 



American Society of Agronomy. 

 C. A. Mooers, University of Tennessee, 



Knoxville, Tennessee. 

 E. G. Montgomery, Cornell University, 



Ithaca, New York. 



Society for Horticultural Science. 

 *E. J. Kraus, University of Wisconsin, 



Madison, Wisconsin. 

 W. A. McCue, Delaware Agricultural 

 Experiment Station, Newark, Dela- 

 ware. 



American Phytopathological Society. 

 *Donald Reddick (Chairman of the Board) , 

 Cornell University, Ithaca, New York. 

 C. L. Shear, U. S. Bureau of Plant Indus- 

 try, Washington, D. C. 



Society of American Foresters. 

 J. S. Illick, State Forest Academy, 



Mount Alto, Pennsylvania. 

 Barrington Moore, American Museum 

 of Natural History, New York City. 



American Conference of Pharmaceutical 

 Faculties. 



Henry Kraemer, University of Michi- 

 gan, Ann Arbor, Michigan. 



Wortley F. Rtjdd, Medical College, Rich- 

 mond, Virginia. 



Royal Society of Canada. 

 No elections. 



WILLIAMS & WILKINS COMPANY 



BALTIMORE, U. S. A. 



THE CAMBRIDGE UNIVERSITY PRESS 



FETTER LANE, LONDON, E. C 



Entered as second-class matter, November 9, 1918, at the post office at Baltimore, Maryland, under the Act of 



March 3, 1879 



Copyright 1920, Williams & Wilkins Company 



I S6.00 United States, Mexico, Cuba 

 Price, net postpaid for two volumes: < $6.25 Canada 



I $6.50 Other countries 



1919 Volumes: I and II 

 1920 Volumes: III, IV, V and VI 



