236 



GRASSES OF IOWA. 



7. ERAGROSTIS TRICHODES. 



Eragrostis trichodes Nash. Bull. Torr Bot. Club. 22: 464. 1895. 

 Eragrostistrichod.es (Nutt.) Nash. Nash in Britton and Brown. 111. 

 PI. 1: 191. /. 4 : S. 1896. Scribner. Bull. U. S. Dept. Agr. Div. Agros. 

 17: 217 f. 515. 1899. 



Eragrostis tenuis Gray. Man. Bot. 664. 1856. (2nd ed.) Watson 

 and Coulter. Gray. Man. Bot. 661. 1890. (6th ed.) Scribner. Grasses 

 of Tenn. Bull. Univ. Tenn. Agr. Exp. Sta. 7: /. 129. 1894. 



Eragrostis tenuis (Ell.) Gray. Beal. Grasses of N. A. 2: 483. 1896. 



DESCRIPTION. 

 Hair Like Eragrostis. A tall perennial, 2 to 5 feet (5-14 dm.) 

 high, with a rather narrow, elongated panicle, and somewhat rigid leaves. 

 Sheaths firm, smooth, pilose at the throat; ligule nearly wanting; leaf- 



l"i«; 165. Eragrostis trichodes—a, b, spikelets; Fio. 166. Eatonia obtusata—a,, empty 



<D\v. Agros. U. S. Dept. Agrl. ) glumes; b, c, d, flowering glumes; d, spikelet. 



(Div. Agros. U. S. Dept. Agrl ) 



