TLhc Botanical (3a3ette 



yRontblB 



Edited by John M. Coulter and CHARLiiS R. Barnes, with the assistance of other members of the 



botanical staff of the University of Chicago. 



Vol. XLV, No* 5 



Issued May J 5, 1908 



CONTENTS FOR MAY 1908 



APOGAMY IN NEPHRODIUM. Contributions fro- I-Hull Botanical Laboratory 



109 (WITH PLATES IX AND X, AND THREE TEXT FI ^^!^»4tBtjg£oJai>ldflOUchi - - • 289 



ALPINE VEGETATION IN THE VICINITY OF LONG'S PEAK, COLORADO (with eight 



figures). IViiliam S. Cooper .... 



BRIEFER ARTICLES 



Variations in Helianthus. T. D. A. Cockeretl 



319 



338 



Endosperm of Pontederiaceae (with four figures). K. Wilson Smith - - - 338 

 An Abnormal /'£7r,'//a'//a/y/^j>'//a (with three figures). F.M.Andrews - - - 34° 



CURRENT LITER A TURE 



BOOK REVIEWS 

 MINOR NOTICES 



^fOTES FOR STUDENTS 



^EWS - 



341 

 343 

 345 



360 



.The Botanical Gazette is published monthly. iThe subscription price is S>oo per year; the price 

 of single copies is 50 cents, f Postage is prepaid by the publishers on all orders from the United States, 

 Mexico, Cuba, Porto Rico, Panama Canal Zone, Republic of Panama, Havvaiian Islands. Philippine Islands 

 ^uam TutuiU (Samoa), Shanghai, f Postage is charged extra as follows: For Canada. 35. «nts on 

 annual subscriptions (total $S-tsl on single copies, 3 cents (total 53 cents); for all other countries m the 

 Postal Union. 84 cents on annual subscriptions (t;tal ^5-84). on single copies 11 cents (total 61 cents) 

 1 Kemittances should be made payable to The University of Chicago Press, and should be "» Chicago or 

 ^ew York exchange, postal or express money order. If local check is used. 10 cents must be added 

 •or collection. 



William Wesley & Son, 28 Essex Street, Strand, London, are appoi^^ted sole European agents and 

 are authorized to quote the following prices : Yearly subscriptions, including postage, £1 4^. each, single 

 copies, including postage, 2.?. td. each. . , ... 



Claims for missing numbers should be made within the month following the ^^S^'^^.^^f.''^.^! PJ^' •' 



<=ation. The publishers expect to supply missing numbers free only when they have been lost in tranat. 

 Business correspondence should be addressed to The University of Chicago Press. Chicago ill. 

 Communications for the editors should be addressed to them at the University of Chicago. Chicago, lu. 



Contributors are requested to write scientific and proper names with P^^j^^'^^^^f ' /"hrBoTANiCAL 

 system of weights and measures, and in citations to follow the form shown in the pages of the Botanical 



'jazette. 



^^ ^ Papers in excess of thirty-two printed pages are not accepted unless ^^/"J^^J^^^tSy Increil^^^^ 

 =ost of the additional pages, in which case the number of pages in the volume is correspondingly .nc 



of .H^-^^t^^tions are furnished without cost to author only when ^^^^f •^^"S^^^^^f;,' 'Tt is advisable to 



f the suggestions made in the January number. 1907, will be sent on application. 



confer with the editors as to illustrations required in any article to be offered. ^^^^^^ ^^ original 



Separates, if desired, may be ordered in advance of publication, .^^^f "^>'^^''* f PJ^i^ional separate 

 »;t.c es without covers will be supplied gratis. A table showing approximate cost of add u.o p 



'^ printed on an order blank which accompanies the proof ; a copy will be sent on request. 



j^, Ai-t nf Coarres* March 3, 1870- 



E^-'lered Aujmt 21, xSo^. at the Post-O^:e at Chicago, as seconJ-clas. matter, under Act or «» 



