Vol. IX 



AUGUST, 1921 



No. 1 



ENTRIES 1-576 



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 Members of the Executive Committee for 19Z1 are indicated by asterisks) 



American Association for the Advaacement 

 of Science, Section G. 

 R. A. Harper, Columbia University, 

 New York City. 



B. E LiviNr.sTON, Johns Hopkins Uni- 

 versity, Baltimore, Maryland. 



Botanical Society of America, General 

 Section. 

 H. A. Gleason, New York Botanical 



Garden, New York City. 

 *B. M. Davip, University of Michigan, Ann 

 Arbor, Michigan. 

 Botanical Society of America, Physiological 

 Section. 

 Otis F. Curtis, Cornell University, 



Ithaca, New Y'ork. 

 *B. M. DuGoAR {Chairman of the Board), 

 Missouri Botanical Garden, St. Louis, 

 Missouri. 

 Botanical Society of America, Systematic 

 Section. 

 Marshall .\. Howf., New Y^ork Botani- 

 cal Garden, New York City. 

 J. H. Barxhart, New York Botanical 

 Garden, New York City. 

 Botanical Society of America, Mycological 

 Section. 



C. H. Katjffman, University of Michi- 

 gan, Ann Arbor, Michigan. 



Bruce Fink, Miami University, Oxford, 

 Ohio. 

 American Society of Naturalists. 

 H. H. Bartlett, University of Michigan, 



Ann Arbor, Michigan. 

 *J. A. Harris, Department of Genetics, 

 Carnegie Institution of Washington, 

 Cold Spring Harbor, L. I., New York. 



Ecological Society of America. 

 H. L. Shantz, U. S. Bureau of Plant 



Industry, Washington, D. C. 

 *FoRREST Shreve, Dc-ert Laboratory, 

 Carnegie Institution, Tucson, Arizona. 



At 



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



Paleontological Society of America. 

 Arthur Hollick, 61 Wall Street, Xew 



Brighton, New York. 

 E. W. Berry, Johns Hopkins University, 

 Baltimore, Maryland. 



American Society of Agronomy. 

 C. B. Hutchison, Cornell University, 



Ithaca, New York. 

 C. A. MooERs, University of Tennessee, 



Knoxville, Tennessee. 



Society for Horticultural Science. 

 V. Pv. Gardner, University of Missouri, 



Columbia, Missouri. 

 E. J. Kraus, University of Wisconsin, 



Madison, Wisconsin. 



American Phytopathological Society. 

 L. R. JoxES, University of Wisconsin, 



Madison, Wisconsin. 

 *DoNALD Reddick, Comell University, 

 Ithaca, New York. 



Society of American Foresters. 



Raphael Zon, U. S. Forest Service, Wash- 

 ington, D. C. 



J. 8. Illick, Pennsylvania Department 

 of Forestry, Harrisburg, Pennsylvania. 



American Conference of Pharmaceutical 

 Faculties. 



Heber W. Youngken, Philadelphia Col- 

 lege of Pharmacy and Science, Phila- 

 delphia, Pennsylvania. 



Henry Kraemer, Mt. Clemens, Michigan. 



Canadian Society of Technical Agricultur- 

 ists. 

 W. P. Thompson, University of Sas- 

 katchewan, Saskatoon, Saskatchewan. 

 B. T. Dickson, Macdonald College, 

 JNIacdonald College, Quebec. 



Royal Society of Canada. 

 No elections, 

 large. 

 Plant Industry, Washington, D. C. 



WILLIAMS & WILKINS COMPANY 



BALTIMORE, U. S. A. 



Entered as eecond-claes matter, November 9, 1918. at the post office at Baltimore, Maryland, under the Act of 



March 3. 1879 



Copjrright 1921, Williama & Wilkins Company 



Price, net postpaid, per volume 



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