256 



Fig. 250. ERAGROSTIS SESSILISPICA Buckl. Proc. Acad. Nat. Sci. Phila. 

 1862 : 97. 18(J2. (mplachne rigkla Vasey, U. S. Dept. Agr. Div. Bot. Bui. 12- : 44, 

 pi. hU. 1891.)— A smooth, wiry, csespitose perennial 3-9 dm. (l°-3°) high, with 

 Barrow, mostly involute leaves and pyramidal panicles, the 5 to 12 flowered, 

 appressed spikelets sessile along the spreading branches. Sheaths short, 

 crowded jU the base of the culm, smooth, pilose above; leaf-blades 5-15 cm. 

 (2'-6') long, 1.5-3 mm. {%"-\\") wide, scabrous above, glabrous or sparingly 

 pilose beneath, gpikelets (o) scattered, 5 to 12 flowered, 8-14 mm. (4"-7") long; 

 empty glumes (&) subequal, acute; flowering glumes (r) rigid, ovate, acute, 

 glabrous, about 4 mm. (2") long, the lateral nerves very prominent. The palea 

 is shown by rf.— Dry prairies, Kansas to Texas. June to October. 



