The Plant World 



A Monthly Magazine of General Botany 



Established 1897 



Edited by 



Forrest Shreve 



Published by 



The Plant World Association 



Joseph Charles Arthur 

 Purdue University 



Otis William Caldwell 



University of Chicago 



William Austin Cannon 

 Desert Laboratory 



Charles Stuart Gager 



Brooklyn Botanic Garden 



Burton Edward Livingston 



Johns Hopkins University 



Francis Ernest Llotd 

 McGill University 



Daniel Trembly MacDouqal 



Carnegie Institution of Washington 



COMPOSED OF THE FOLLOWING MEMBERS: 



James Bertram Overton 



University of Wisconsin 



George James Peirce 



Stanford University 



Charles Louis Pollard 



Staten Island Association 



Herbert Maule Richards 

 Columbia University 



Forrest Shreve 



Desert Laboratory 



Volnet Morgan Spalding 



Loma Linda, California 



John James Thornber 



University of Arizona 



Edgar Nelson Transeau 



Eastern Illinois Normal School 



All manuscripts submitted for publication should be type-written and in good 

 order. Galley proof is submitted to the author, who should return it as early as 

 possible to the Editor. Reprints should be ordered on a blank for that purpose 

 which accompanies the galley proofs. 



Reprints will be supplied at the following rates: 



Express or postage is extra. 



Advertising rates will be furnished on application. 



Address all correspondence regarding contributions and reprints, and all 

 books for review to The Editor, The Plant World, Tucson, Arizona. 



The subscription price is $2.50 per annum in the United States, its overseas 

 dependencies, and Canada and Mexico; $3.00 to other countries. Single copies 

 less than twelve months old, 20 cents; single copies more than twelve months old, 

 30 cents. Volumes 8 to 14 inclusive can be supplied at $2.00 each, carriage paid. 



Missing numbers lost in the mails will be replaced gratis only when notice 

 is received within one month of date of issue. 



Make all remittances payable to The Plant World. Address all correspond- 

 ence regarding subscriptions, discontinuances, changes of address, back num- 

 bers and early volumes to: The Waverly Press, 2419-21 York Road, Baltimore, 

 Md., or to The Plant World, Tucson, Arizona. 



