JUGLANS 



233 



endocarp bony, rough or rugose, nut indehiscent or separating into two 

 valves in decaying. 



A genus of about 8 species, natives of the north temperate zone, one in 

 the West Indies and one or two in the Andes of South America. 



Staminate and pistillate flowers of Juglans cinerea 



Key to the Species 



1. Bark gray, fruit oblong, twigs and foliage 



viscid-hairy • /. cinerea 



2. Bark dark brown, fruit globose, twigs and 



foliage not viscid-hairy /. nigra 



