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





the lateral pedicels 2 to 3 mm long; glumes acuts, 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- 

 lute, tapering to a fine 



FIGURE m.-Eragrostis po i n t scabrOUS On the 

 tiuaveolens, XiO- x ., , . , , , , 



(Hitchcock 3812, N. upper surface; panicle diffuse, more than half the 



entire height of the plant, pilose in the axils, 



branching 4 or 5 times; spikelets on long 



flexuous pedicels, 

 ovate to ovate- 

 oblong, 2- to 6-fiow- 

 ered (rarely to 8-flow- 

 ered), 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. 91 -Dry soil, 

 fields and open woods, Maryland to Missouri, 

 FIGURE 316 Eragrostis hir- south to Florida and eastern Texas; introduced 

 xio. ^cfurtfsslm^S in Maine and Massachusetts (fig. 317). 



FIGURE 315. Eragrostis arida. Panicle, 

 X 1; floret, X 10. (Type.) 



FIGURE 317. Distribution of 

 Eragrostis hirsuta. 



FIGURE 318. Eragrostis lugens. 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 



