51 



Fig. 347. Panicura cognatum Schultes, Mant. 2 : 235. 1824. 

 (P. diver gens Muhl. 1817, not H. B. K. 1815; P. autumnale Bosc. 

 1825.) Fall Witch-grass. — A slender, erect, or ascending peren- 

 nial, nsually much branched at the base, 3 to 6 dm. high, with 

 rather short, narrow leaves, diffusely branching panicles, and 

 acute, lanceolate spikelets (a, &, c) about 3 mm. long. — Dry soil, 

 South Carolina and Florida to Illinois, Minnesota, Kansas, and 

 Arizona. June-October. 



