The Plant World 



A Monthly Magazine of General Botany 



Established 1897 



Edited hj 

 Forrest Shrevb 



Published bj 



The Plant World Association 



COMPOSED OP THE FOLLOWING MEMBERS: 



JOSKPH CHA.BLBS ABIHUB 



Purdue University 

 Otis William Caldwbll 



University of Chicago 

 WiLLiAU AtjsTiN Cannon 



Desert Laboratory 

 Chablbs Stoabt Qaoeb 



Brooklyn Botanic Garden 

 J. Abthub Harris 



Station for Experimental Evolutiom 

 Burton Edward Livinoston 



Johns Hopkins University 

 Fbancis Ernest Llotd 



McGill University 

 Danikl Tbgmblt MacDouoal 



Carnegie Institution of Washington 



James Bertram Overton 



University of Wisconsia 

 GxoBQE James Peibcb 



Stanford University 

 Cbableb Louis Pollard 



Staten Island Association 

 Hbrbert Mauls Hichards 



Columbia University 

 Fobsbst Shreve 



Desert Laboratory 

 VoLNET Morgan Spalding 



Loma Linda, California 

 John James Thobnbeb 



University of Arizona 

 Edoab 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 aa 

 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 

 are 30 cents each. Volumes 1 to 7 inclusive can not be supplied; Volumes 10 

 and 11 can be supplied incomplete; Volumes 8 and 9, and Volumes 12 to 17 are 

 $2.50 each. 



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, Williams & Wilkins Co., 2419-21 

 Yc-rk Road, Baltimore, Md., or to The Plant World, Tucson, Arizona. 



