CONTENTS 



Agronomy , 566- 684 



Bibliography, Biography and History 685- 710 



Botanical Education 711- 718 



Cytology .^ 719- 739 



Forest Botany and Forestry .' 740- 838 



Genetics 839- 943 



Horticulture 944-1047 



Morphology, Anatomy and Histology of Vascular Plants 1048-1077 



Morphology and Taxonomy of Bryophytes 1078-1096 



Paleobotany and Evolutionary History 1097-1124 



Pathology 1125-1275 



Pharmaceutical Botany and Pharmacognosy 1276-1289 



Physiology 1290-1385 



Soil Science 1386-1420 



Taxonomy of Vascular Plants 1421-1498 



Miscellaneous, Unclassified Publications 1499-1527 



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. 

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

 D.C 



Bibliography, Biography and History. NeilE. 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 Botanv 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. Kelly, 

 Pennsylvania State College, State College, Penn- 

 sylvania. 



Horticulture. J. H. Gourlet, West Virgmia 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. Tbanseau. 



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. 

 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 LanB- 

 ing, Michigan. 



Pharmaceutical Botany and Pharmacognosy. H ebeb W . 

 Youngken, Philadelphia College of Pharmacy and 

 Science.Philadelphia.Pennsylvania.— Assistant Editor, 



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

 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 EditorJ 



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

 ington, D. C. 



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

 souri Botanical Garden, St. Louis, Missouri.—^ 

 Assistant Editor, E. B. Patson, Missouri BotanicalJ 

 Garden, St. Louis, Missouri. 



BIBLIOGRAPHY COMMITTEE FOR 1920 



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



H. O. BucKMAN L. Knudson 



W. H. Chandler E. G. Montgombbt 



A. J. Eames D. Reddick 



R. A. Emerson L. W. Sharp 



H. M. Fitzpatrick K. M.Wjeqand 



R. HOSMFB 



