158 MISC. PUBLICATION 200> U. S. DEPT. OF AGRICULTURE 



the lateral pedicels 2 to 3 mm long; glumes acute, the first narrow, 

 scarcely 1 mm long, the second a little longer and wider; lemmas 1.6 



to 1.8 mm long, acut- 



ish. o — Dry soil, 



Arkansas and Texas 



to Arizona and central 



Mexico. 



30. Eragrostis hir- 



suta (Michx.) Nees. 



(Fig. 316.) Perennial; 



culms erect, tufted, 50 



to 120 cm tall; sheaths 



hirsute to glabrous, 



pilose at the throat 



and especially along 



the collar at each side ; 



blades flat, elongate, 5 



to 10 mm wide, becom- 

 ing more or less inVO- 

 lnfa fonorino' fn « fine Figure 315.— Eragrostis arida. Panicle, 



lute, tapering to a, line x 1; floret> x 10 (Type .) 



Figure 314.— Eragrostis point, SCabrOUS On the 



(mtchcock 71 ^, n! upper surface; panicle diffuse, more than half the 



Mex) entire height of the plant, pilose in the axils, 



branching 4 or 5 times; spikelets on long 



flexuous pedicels, 



ovate to ovate- 



Figure 317.— Distribution of 

 Eragrostis hirsuta. 



oblong, 2- to 6-flow- 



ered (rarely to 8-flow- 



3 to 4 mm long; 



glumes acuminate, 1.5 and 



2 mm long; lemmas rather 



turgid, 2 mm long, acute, 



the nerves obscure; grain oblong, 1 mm long, 

 minutely striate and pitted. % —Dry soil, 

 fields and open woods, Maryland to Missouri, 

 figure zw.-Eragrostis hir- south to Florida and eastern Texas; introduced 

 xw. Slfssl&X) in Maine and Massachusetts (fig. 317). 



Figure 318— Eragrostis tugens. Plant, X 1; floret, X 10. (Reverchon 16, Tex.) 



31, Eragrostis lugens Nees. (Fig. 318.) Perennial; culms tufted, 

 rather wiry, sometimes geniculate below, sparingly branching; sheaths 



