72 



Fig. 54. Panicum virgatum L. Switch-grass. A stout, erect 

 peremiial 9 to 15 dm high, usually forming large tufts, with 

 strong, creeping rootstocks, loug, flat leaves, aud ample, spreading 

 pimicles. Sandy soil, usually aloug streams and about ponds and 

 lakes, Maine and Ontario to North Dakota, Colorado, Arizona, 

 Texas, and Florida. [Mexico.] July-October. 



