206 



MISSOURI BOTANICAL GARDEN. 



those which have remained outside 

 ibed the flowcrinff. in June, of Lohd 



such 



by 



correlated with the fact 



* 



ills vurviirea, have been 



during the 



DIAGRAM 2. 



FLOWERING OF FAMILIES, THROUGH SEASON. 



duced no flowers, they in the spring following will flower very 



short 



ascribed 



by 



definite number of heat 



* Irish, H. C. Compara,tive Phenological Notes. Rept. Mo. State 



Hort. Soc. 40:325. 1897. 



