55 



Fig. 351. Panicum hirticaulum J. S. Presl in Rel. Haenk. 1: 

 308. 1830. Rough Panic-grass. — A slender, or occasionally 

 rather stout, erect perennial, often geniculate at the lower nodes, 

 with papillate-pilose sheaths, flat and usually glabrous leaves 

 and terminal, more or less spreading, many-flowered panicles. 

 Spikelets (a, b, c) lanceolate, acute, about 3 mm. long, glabrous. — 

 Texas, New Mexico, and Arizona to Washington. [Mexico, Gala- 

 pagos Islands]. August, September. 



