CONTENTS 



Agronomy * 1S53-1897 



Botanical Education 1S98-1929 



Cytology 1930-1943 



Ecology 1944-19S6 



Forest Botany and Forestry 19S7-2070 



Genetics 2071-2220 



Horticulture 2221-2407 



Morphology, Anatomy and Histology of Vascular Plants 2408-2458 



Morphology and Taxonomy of Algae 2459-2465 



Morphology and Taxonomy of Bryophytes 2466-2479 



Morphology and Taxonomy of Fungi 2480-2499 



Paleobotany and Evolutionary History 2500-2520 



Pathology. 2521-2790 



Pharmaceutical Botany and Pharmacognosy 2791-2821 



Physiology 2822-2919 



Soil Science 2920^2958 



Taxonomy of Vascular Plants 2959-3029 



Miscellaneous 3030-3061 



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. Lincoln W. 

 Riddle, Harvard University, Cambridge, Massa- 

 chusel ts. 



Botanical Education. C. Sti \rt Gager, Brooklyn 

 Botanic Garden, Brooklyn, N. Y. — Assistant Editor, 

 Alfred Gundi rsen, Brooklyn Botanic Garden, 

 Brooklyn, New York. 



Cytology. Gilbert M. Smith, University of Wisconsin, 

 Madison, Wisconsin— Assistant Editor, Geo. S. 

 Bryan, University of Wisconsin, Madison, Wiscons 



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

 University of Chicago, Chicago, Illinois— Assistant 

 o. 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. 

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

 periment Station, Stabler, Washington. 



Genetics. George II. Shull, Princeton University, 

 Princeton, N.J. — Assistant Editor, J. P. Kelly, Penn- 

 sylvania State College, State College, Pennsylvania. 



Horticulture. J. 11. Gourley, New Hampshire Agri- 

 cultural College, Durham, New Hampshire. 



Miscellaneous, Unclassified Publications. Bi rton E. 

 Livingston, The Johns Hopkins University, Balti- 

 more, Maryland 



Morphology, Taxonomy and Histology of Vascular Plants. 

 E. W. Sinnott, I nt Agricultural College, 



i] i.-. ( lonnect icut. 



Morphology and Taxonomy of Algae. E. X. Transeau, 

 Ohio State University, Columbus, Ohio. 



Morphology and Taxonomy of Bryophytes. Alexander 

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



Morphology and Taxonomy of Fungi, Bacteria and Myx- 

 omycetes. E. W. Olive, Brooklyn Botanic Garden, 

 Brooklyn, New York— Assistant Editor, H. M. Fitz- 

 Patrick, Cornell University, Ithaca, New Yoik. 



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, M issouri— 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. Schi RTZj l'. S. Bureau of Plant Industry, Wash- 

 ington, D. C. 



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

 souri Botanical St. Louis, Missouri — 



Assistant Editor, K. B. Payson, Missouri Botanical 

 Garden, St.Louis, Missouri. 



BIBLIOGRAPHY COMMITTEE FOR 1920 



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



H. O. Bookman L. Knudson 



\\ . H. Chandle i . G. Montgomery 



A.J D. Reds 



R. A. Emerson L. W. Sharp 



II. M. Fir /PATRICK K M.Wiegans 



R. HosMr.t: 



