﻿404 



BOTANICAL GAZETTE 



[JUNE 



the end of their first season, darker and still lustrous the following year, and 

 ultimately gray tinged with red, and armed with stout nearly straight dark 

 purple shining spines 7-9'=" long. Flowers from the 20th to the end of May. 

 Fruit ripens at the end of September. 



Hill 



Hill 



Arnold Arboretum, 



Jamaica Plain, Mass. 



