CONTRIBUTIONS FROM THE NEW YORK BOTANICAL 



GARDEN— No. 198 



FERTILITY IN CICHORIUM INTYBUS: 



THE SPORADIC OCCURRENCE OF 

 SELF-FERTILE PLANTS AMONG 

 THE PROGENY OF SELF- 

 STERILE PLANTS 



A. B. STOUT 



NEW YORK 

 1917 



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



4: 375-395. July, 1917 



