INFLUENCE OP CLIMATE 



201 



by it. But the differences in climate are not recorded 

 in the flowering and the leafing alone, but often also 

 in the form and texture of the 

 leaves and in the character of 

 the fruit. The Newman plum, 

 as I have seen it growing in 

 Maryland, I should refer un- 

 hesitatingly to Prunus angusti- 

 folia, but as it grows in New 

 York, I am in 

 doubt whether to 

 refer it to that spe- 

 cies or to Prunus 

 hortulana. These 

 considerations in- 

 cline me the more 

 to discard my Prunus hortulana 

 as an original species, and to 

 use it in the future merely to 

 designate a well-marked group 

 or race of cultivated plums, the 

 origin of which is to be found 

 in contemporary environments 

 and in the natural mixing of 

 two parent stocks ; and thereby 

 the name hortulana "belong- 

 ing to a garden" becomes even 

 more significant than I in- 

 tended. I do not propose this ~** 

 as my final conclusion, but it states the case as 

 I see it at this writing. To my mind, this view 

 of the origin of these valuable hortulaua plums is 

 most satisfactory and inspiring, for it is a working 



Fig. 32. 



Itaska, grown it 



Maryland. 



