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. 
