CONTRIBUTIONS FROM THE NEW YORK BOTANICAL 

 GARDEN— No. 239 



ALTERNATION OF SEXES AND INTERMITTENT PRO- 



DUCTION OF FRUIT IN THE SPIDER 



FLOWER (CLEOME SPINOSA) 



A. B. STOUT 



NEW YORK 



[Reprinted, without change of paging, from American Journal of Botany 

 10: 57-66. fig. i + pl. 6. Feb. 1923] 



