72 



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

 pereuuial 9 to 15 dm. high, usually forming large tufts, with 

 strong, creeping rootstocks, long, flat leaves, and ani])]e, spreading 

 panicles. — Sandy soil, usually along streams and about ponds and 

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

 Texas, and Florida. [Mexicc).] .luly-Oetober. 



