165 



Fig. 461. Sporobolus ligulatus Vasey & Dewey, Contrib. U. S. 

 Nat. Herb. 2 : 518. 1894. — A slender, smooth, upright perennial, 

 3 to 4.5 dm. high, with narrow, flat leaves, and contracted pani- 

 cles 8 to 12 cm. long. Spikelets (a) 3 to 4 mm. long, subterete, 

 with obtuse, nearly equal, empty glumes (6) which are about one- 

 half as long as the smooth flowering glume. — Canyons, western 

 Texas. September. 



