CONTENTS 



Agronomy 227 



Bibliography, Biography and History 235 



Botanical Education 237 



Cytology 237 



Forest Botany and Forestry 238 



Genetics 243 



Horticulture 268 



Morphology, Anatomy and Histology of Vascular Plants 279 



Morphology and Taxonomy of Bryophytes 281 



Morphology and Taxonomy of Fungi*, Lichens, Bacteria and Myxomycetes 283 



Paleobotany and Evolutionary History 286 



Pathology 289 



Pharmaceutical Botany and Pharmacognosy 297 - 



Physiology 303 



Soil Science '. 318 



Taxonomy of Vascular Plants 320 



Miscellaneous, Unclassified Publications 331 



BOARD OF EDITORS FOR 1921 

 AND ASSISTANT EDITORS 



Editor-in-Chief, J, R. SCHRAMM 



Cornell University, Ithaca, New Ycrk 



EDITORS FOR SECTIONS 



Agronomy. C. V. Piper, U. S. Bureau of Plant Indus- 

 try, Washington, D. G. — Assistant Editor, Mart R. 

 Burr, U. S. Bureau of Plant Industry, Washington, 

 DC. 



Bibliography, Biography and History. Neil E. Stevens, 

 U.S. Bureau of Plant Industry, Washington, D. C 



Botanical Education. C. Stuart Gager, Brooklyn 

 Botanic Garden, Brooklyn, New York. — Assistant 

 Editor, Alfred Gundersen, Brooklyn Botanic 

 Garden, Brooklyn, New York. 



Cytology. Gilbert M. Smith, University of Wisconsin, 

 Madison, Wisconsin. — Assistant Editor, Geo. S. 

 Bryan, University of Wisconsin, Madison, Wisconsin. 



Ecology and Plant Geography. H. C. Cowles, The 

 University of Chicago, Chicago, Illinois. — Assistant 

 Editor, Geo. D. Fuller, The University of Chicago, 

 Chicago, Illinois. 



Forest Botany and Forestry. Raphael Zon, U. S. Forest 

 Service, Washington, D. C. — Assistant Editor, J. V. 

 HoFMANN, U. S. Forest Service, Wind River Ex- 

 periment Station, Stabler, Washington. 



Genetics. George H. Shull, Princeton University, 

 Princeton, New Jersey. — Assistant Editor, J. P. 

 Kellt, Pennsylvania State College, State College, 

 Pennsylvania. 



Horticulture. J . H. Gourlet, West Virginia Univer- 

 sity, Morgantown, West Virginia. — Assistant Editor, 

 H. E. Knowlton, West Virginia University, Morgan- 

 town, West Virginia. 



Miscellaneous, Unclassified Publications. Burton E. 

 Livingston, The Johns Hopkins University. Balti- 

 more, Maryland.— Assistant Editor, Sam F. Tre- 

 LEASE, The Johns Hopkins University, Baltimore, 

 Maryland. 



Morphology, Anatomy and Histology of Vascular Plants. 

 E. W. Sinnott, Connecticut Agricultural College, 

 Storrs, Connecticut. 



Morphology and Taxonomy of Algae. E. N. Tbanbbatj, 

 Ohio State University, Columbus, Ohio. 



Morphology ana Taxonomy of Bryophytes. Alexandbb 

 W. Evans. Yale University, New Haven. Connecticut. 



Morphology and Taxonomy of Fungi, Lichens, Bacteria 

 and Myxomycetes. H. M. Fitzpatrick, Cornell 

 University, Ithaca, New York. — Assistant Editor, 

 Carlos E. Chardon, Cornell University, Ithaca, 

 New York. 



Paleobotany and Evolutionary History. Edward W. 

 Berrt, The Johns Hopkins University, Baltimore, 

 Maryland. 



Pathology. G. H. Coons, Michigan Agricultural Col- 

 lege, East Lansing, Michigan. — Assistant Editor, C. W. 

 Bennett, Michigan Agricultural College, East Lans- 

 ing, Michigan. 



Pharmaceutical Botany and Pharmacognosy. H ebeb W . 

 YouNGKEN, Philadelphia College of Pharmacy and 

 Science ,P hiladelphia, Pennsylvania.— Assistant Editor, 



E. N. Gathebcoal, 701 South Wood St., Chicago, 

 Illinois. 



Physiology. B. M. Dugqar, Missouri Botanical Garden, 

 St. Louis, Missouri. — Assistant Editor, Carroll W. 

 Dodge, Brown University, Providence, Rhode Island. 



Soil Science. J. J. Skinner, U. S. Bureau of Plant 

 Industry, Washington, D. C. — Assistant Editor, 



F. M. Schertz, U.S. Bureau of Plant Industry, Wash- 

 ington, D. C. 



Taxonomy of Vascular Plants. J. M. Gbeenman, Mis- 

 souri Botanical Garden, St. Louis, Missouri. — 

 Assistant Editor, E. B. Patson, Missouri Botanical 

 Garden, St. Louis, Missouri. 



BIBLIOGRAPHY COMMITTEE FOR 1921 



J. R. Schramm, Chairman, Cornell University, Ithaca, New York 



H. O. BUCKMAN R. HOSMEP 



W. H. Chandler L. Knudson 



A. J. Eames E. G. Montoomert 



R. A. Emerson D. Reddick 



H. M. FrrzPATBiCK L. W. Sharp 



E. M. WlEGAND 



