AMERICAN 
JOURNAL OF BOTANY 
Devoted to All BRANckES of Botanical Science 
Established 1914 
EDITED BY A COMMITTEE pF THE 
BOTANICAL SOCIETY OF AMERICA 
EDITORIAL COMMITTEE 
F. C. NeWCOMBE, Editor-in-Chief, 
University of Michigan 
C. Stuart GageR, Business Manager R, A. Harper, 
JBrooklyn Botanic Garden Columbia University 
i 
Irving W. Bailey, A.S.Hitchcock, 
Bussey Institution Bureau of Plant Industry 
H. H. Bartlett, Edgar W. Olive, 
University of Michigan Brooklyn Botanic Garden 
A. G. Johnson, University of Wisconsin 
(Representing American Phytopathological Society) 
The Journal is published rnonthlj, except during August and September. 
Subscription price, $5.00 a year. Single copies 60 cents, plus postage. Pbstage will 
be charged to all foreign countries, except Mexico, Cuba, Porto Rico, Panama, 
Canal Zone, Republic of Panama, Hawaii, Philippine Islands, Guam, Samoan 
Islands, and Shanghai. Postage to Canada 2a cents a volume on annual subscrip- 
tions ; to all other countries in the Postal Union, 40 cents a volume on annual sub- 
scriptions. 
The pages of the Journal are open to members of the Botanical Society of 
America, or candidates approved for membership. 
Manuscript offered for publication should be typewritten, and should in all 
cases be submitted to the Editorrin-Chief. 
Papers are Umited to 24 pages in' length, exclusive of plates, except that ad- 
ditional pages may be arranged for at cost rate to authors (approximately $1.50 a 
page). 
Proofs^ should be corrected immediately on receipt, and returned to American 
journal of Botany, Brooklyn Botanic Garden, Bi-ooklyn, N. Y. 
Illustrations, other than zinc etchings, and tabular matter should, in general, 
be restricted to approximately ten percertt of the number of pages of text. Authors 
may be churged at cost rates for illustrations and tabular matter in excess of that 
amount (approximately $3.00 a page for tabular matter ; 15 cents per square inch 
for half-tones). 
Separates should be ordered when proof is returned. Fifty, copies without cover 
will be supplied free; cover and additional copies at cost. 
Remittances should be made payable to American Journal of Botany. Ten 
cents must be added to all checks not drawn on New York City banks. 
Claims for missing numbers should be made within 30 days following their 
date of mailing. The publishers will supply missing numbers free only when they 
have been lost in the mails. 
Correspondence concerning editorial matters should be addressed to Prof. F. 
C. Newcombe, 9 Geddes Heights, Ann Arbor, Mich. 
Business correspondence, including notice of change of address, and directions 
concerning reprints, should be addressed to American Journal of Botany, Brook- 
lyn Botanic Garden, Brooklyn, N. Y., or 41 North Queen Street, Lancaster, Pa. 
