"A 



ni 



BoTAMCAL 

 BULLETI 



VOLUME IX 



WITH 32 PLATES 

 1921 



ST. LOUIS, MISSOURI 



PUBLISHED MONTHLY, EXCEPT JULY AND AUGUST, 

 BY THE BOARD OF TRUSTEES 



SUBSCRIPTION PRICE: 

 ONE DOLLAR PER YEAR SINGLE NUMBER TEN CENTS 



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