CONTENTS 



Agronomy 1-63 



Bibliography, Biography and History 64-76 



Botanical Education 77-99 



Forest Botany and Forestry 100-156 



Genetics 157-249 



Horticulture 250-315 



Morphology, Anatomy and Histology of Vascular Plants 316-337 



Morphology and Taxonomy of Bryophytes 338-354 



Morphology and Taxonomy of Fungi, Lichens, Bacteria and Myxomycetes 355-377 



Paleobotany and Evolutionary History 378-395 



Physiology . 396- 446 



Soil Science 447-480 



Taxonomy of Vascular Plants 481-551 



Miscellaneous, Unclassified Publications 552-565 



BOARD OF EDITORS FOR 1920 



AND ASSISTANT EDITORS 

 Editor-in-Chief, Burton E. Livingston 



The Johns Hopkins University, Baltimore 



Associate, Lon A. Hawkins 



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



EDITORS FOR SECTIONS 



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

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

 Bdrr, XJ. S. Bureau of Plant Industry, Washington, 

 DC. 



Bibliography, Biography and History. Lincoln W. 

 Riddle, Harvard University, Cambridge, Massa- 

 chusetts. 



Botanical Education. C. Stuart Gager, Brooklyn 

 Botanic Garden, Brooklyn, New York. — Assistant 

 Editor, Alfred Gdndersen, Brooklyn Botanic 

 Garden, Brooklyn, New York. 



Cytology. Gilbert M. Smith, University of Wisconsin, 

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

 Brtan, 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. 

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

 periment Station, Stabler, Washington. 



Genetics. George H. Shull, Princeton University, 

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

 Pennsylvania State College, State College, Penn- 

 sylvania. 



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. 



Morphology, Anatomy and Histology of Vascular Plants. 



E. W. Sinnott, Connecticut Agricultural College, 



Storrs, Connecticut. 

 Morphology and Taxonomy of Algae. E._N. Tranbbad. 



Ohio State University, Columbus, Ohio. 

 Morphology ana Taxonomy of Bryophytes. Alexandeb 



W. Evans. Yale University. New Haven. Conne cticut . 



Morphology and Taxonomy of Fungi, Lichens, Bacteria 

 and Myxomycetes. H. M. Fitzpatrick. Cornell 

 University, Ithaca, New York. 



Paleobotany and Evolutionary History. Edward W, 

 Berry, 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. Heber W. 

 YouNGKEN, Philadelphia College of Pharmacy and 

 Science ,Philadelphia,Pennsylvania.— Assistant Editor, 



E. N. Gathercoal, University of Illinois, Urbana, 

 Illinois. 



Physiology. B. M. Duggar, 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. ScBERTZ, U.S.Bureauof Plant Industry, Wash- 

 ington, D. C. 



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

 souri Botanical Garden, St. Louis, Missouri. — 

 Assistant Editor, E. B. Payson, Missouri Botanical 

 Garden, St. Louis, Missouri. 



BIBLIOGRAPHY COMMITTEE FOR 1920 



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



H. O. BucKMAN L. Knudson 



W. H. Chandler E. G. Montgomery 



A.J. Eames D. Reddick 



R. A. Emerson L. W. Sharp 



H. M. FrrzPATRiCK K. M. Wiegand 



R. Hosmer 



