72 



Fig. G6. CK7ETOCBXOA CORRUGATA (Ell.) .Scribn. U. S. Dept. Agr. Div. 

 Agros. Bui. 4 : 39. 1897. {Panicum corrugatum Ell. Sk. Bot. S. C. and Ga. 1 : 113. 

 1817; Setaria corrugata R. & S. Mant. 2 : 276. 1824.)— A rather stout, ca-spitose an- 

 nual 6-10 dm. (2°-3i°) high, with elongated spike-like panicles and linear- 

 lanceolate, scabrous leaves. Sheaths very loose; leaf blades 1-3 dm. (4'-12') 

 long, 3-6 mm. (li"-3" j wide. Panicles 6-16 cm. (2^'-6') long; rachis pilose; spike- 

 lets (a, b, c) 2 mm. (1") long; second glunje about four-fifths as long as the spike- 

 let; flowering glume (d) very strongly transversely undulate-rugose through- 

 out.— In waste places, cultivated fields, etc., Georgia to Florida. 



Var. PARVIFLOR A (Poir.) Scribn. & Merrill, U.S. Dept. Agr. Div. Agros. Bui. 21: 

 24. 1900, is a more slender form 2-7 dm. (8'-28') high, much branched from the 

 base, with shorter leaves, shorter panicles, 2-7 cm. (l'-3') long, and longer 

 spreading setse. 



