150 A TEXT-BOOK OF GRASSES 



Argentina, and of the latter as far north as New England, 

 and west even to eastern Asia. The subgenus Dichan- 

 thelium of the immense genus Panicum is represented 

 by nearly 100 species in southeastern United States, but 

 there are a few species extending to the state of Washing- 

 ton, and others through the West Indies and Mexico to 

 northern South America. Danthonia, with over 100 

 species, centers in South Africa, but several species are 

 found in America and other countries. 



