Ill 



Fig. 407. Cenchrus echinatus Linn. Sp. PI. 1488. Cock 

 Spur. — A stout, erect or ascending perennial 3 to 10 dm. high, 

 with rather broad, flat leaves and cylindrical, dense spikes 8 to 12 

 cm. long. Involucres (a) pilose or downy, with many spines above 

 and bristly near the base. — Dry soil, fields and waste places, 

 South Carolina to Florida and westward to Texas. [Mexico and 

 southward.] March-September. 



