THIS NUMBER COMPLETES VOLUME IV 



Vol. IV JULY, 1920 No. I 



ENTRIES 1-1853 



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 societiea 



interested in plants. 



THE SOCIETIES NOW REPRESENTED 



AND 



THE MEMBERS OF THE BOARD OF CONTROL 



(The Executive Committee for 19£0 are indicated by aster-inks) 



American Association for the Advancement Paleontological Society of America. 



of Science, Section G. E. W. Berry, Johns Hopkins University, 



*B. E. Livingston, Johns Hopkins Uni- Baltimore, Maryland. 



versity, Baltimore 1 , Maryland. F. H. Knowlton, U. S. National Museum, 



A. F. Blakeslee, Station for Experimental Washington, D. C. 

 Evolution, Cold Spring Harbor, Long 



Island, New York. American Society of Agronomy. 



Botanica! Soder, of America, General ^o^^HZ^ " T "" , ™" ! - 



■^asas-* of Michigan - Ann E iS^Jrss? ycX: Corne11 University> 



* R Vt A ' ^ Ha , R ^' Columbia University, Society for Horticultural Science. 



New York City. * E j Kraus, University of Wisconsin, 



Botanical Society of America, Physiology Madison, Wisconsin. 



Section. W. A. McCue, Delaware Agricultural 



B. M. Duggar, Missouri Botanical Experiment Station, Newark, Dela- 

 Gardcn, St. Louis, Missouri. ware. 



W. J. V. Osterhotjt, Harvard University, . _, ,....„., 



Cambridge, Massachusetts. American Phytopathological Society. 



*Donald Reddick {Chairman of the Board), 



Botanical Society of America, Systematic Cornell University, Ithaca, New York. 



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



J. H. Barnhart, New York Botanical try, Washington, D. C. 



Garden, Bronx Park, New York City. 



A. S. Hitchcock, U. S. Bureau of Plant Society of American Foresters. 



Industry, Washington, D. C. J. S. Illick, State Forest Academy, 



American Society of Naturalists. „ Mount Alto, Pennsylvania. 



J. A. Harris, Station for Experimental Barrington Moore, American Museum 



Evolution, Cold Spring Harbor, Long of Natural History, New York City. 



t? H\ &n £' Ne u Y ° rk j tt • -4. n American Conference of Pharmaceutical 



E. M. East, Harvard University, Bussey Faculties 



Institution Forest Hills, Boston, Henry K raemer, University of Michi- 



Massachusetts. gan> Ann Arbor ; Michigan. ' 



Ecological Society of America. Wortley F. Rudd, Medical College, Rich- 



Forrest Shreve, Desert Laboratory, mond, Virginia. 



Carnegie Institution, Tucson. Arizona. 

 •Geo. H. Nichols, Yale University, New Royal Society of Canada. 



Haven, Connecticut. • No elections. 



At large. 

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

 try, Washington, D. C. 



WILLIAMS & WILKINS COMPANY 



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THE CAMBRIDGE UNIVERSITY PRESS 



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



March 3, 1879 



Copyright 1920, Williams & Wilkins Company 



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1910 Volumes: I and II 

 1920 Volumes: HI, IV. V and VI 



