ESTABLISHED 1597 



The 



PLANT WORLD 



An Illustrated Monthly Magazine 

 of General Botany 



Edited by 



Volney M. Spalding 



Published by 



The Plant World Association 



Consisting of the following members: Joseph Charles Arthur, Purdue University; Otis 

 William Caldwell, University of Chicago; William Austin Cannon, Desert Laboratory; 



Charles Stuart Gager, University of Missouri; Burton Edward Livingston, John Hopkins 

 University; William Bennett McCallum, Arizona Experiment Station; Francis Ernest Lloyd 

 Alabama Polytechnic institute; Daniel Trembly MacDougal, Carnegie Institution of 

 Washington; George James Peirce, Stanford University; Charles Louis Pollard, Staten 

 Island Asso. of Arts and Sciences; Volney Morgan Spalding, Desert Laboratory; Forrest 

 Shreve, Dese.-t Laboratory . Join* Jaint; Thon.ber, University of Arizona; and K. S 

 Macintosh, Alabama Polytechnic Institute. 



THE PLANT WORLD is devoted to the interests of the general reader the student 

 and teacher. It therefore seeks to present each month the results of the development 

 of botanical knowledge in the widest sense. 



Manuscripts for publication, books for review and business communications should 

 be sent to THE PLANT WORLD, Tucsen, Arizona. 



Subscription $1.50 per year. Make paper payable to THE PLANT WORLD. 



Correspondence regarding Volumes I-VII (1897-1904) inclusive should be addressed 

 to Charles Louis Pollard, New Brighton, N. Y. The remaining back numbers may be 

 obtained from THE PLANT WORLD. Tucson, Arizona. 



Authors who order extra copies, containing their articles, before the issue is printed, 

 will receive these at the rate of $5.00 per hundred; postage or express extra. Reprints 

 without cover will be furi.ished at CO t,?$l .75 per hundred for 4 pages or less, $2.00 per 

 hundred for 8 pages or less: covers with title $ t. SO per hundred. Express or mail extra. 



THE PLANT WORLP 



Tucson, Arizona 



