388 97. GRAMINEiE. 



same side of the spikelet, without awns or bristles, with 2 or 

 more perfect flowers. 



48. HoRDEUM. Spikelets in threes, often partially barren. 

 Gl. 2, ending in long bristles ; 1 perfect flower and a stalk- 

 like rudiment. 



49. Lepturus. Spikelets solitary, imbedded Alternately on 

 opposite sides of the raehis. Gl. 1 — 2, opposite to the 

 rachis, cartilaginous, covering the i fl. and superior rudi- 

 ment. Pales scarious. Stigmas feathery. 



44- Glume solitary, bractlike, or the upper very small. 



60. LoLiUM. Spikelets solitary, placed edgewise on the rachis. 

 Gl. solitary, or that next the rachis very small, with 3 or 

 more flowers. 



Suborder I. Clisanthece. Tribe I. Panicece. 



1. DiGITARIA Scq/j. 



[1. D. sanguinalis (Scop.); 1. and sheaths hairy, fl. oblong- 

 lanceolate glabrous with downy margins (?). — E. B. 849. P. 70. 

 — St. ascending, a foot long. — Not a native. A. VIII.] E. 



2. D. humifusa (Pers.); 1. and sheaths glabrous, fl. elliptical 

 downy with glabrous veins. — E. B. S. 2613. P. 71. — St. mostly 

 procumbent, 4 — 8 in. long. Spikes usually 3 or 4, springing 

 from nearly the same point. Spikelets in pairs, one on a longer 

 stalk than the other. — Sandy fields, rare. A. VII. VIII. E. 



2. EcHiNOCHLOA Pal. de JBeauv. 



[\. E. Crus-gaUi{BeaViV.); spikes alternate or opposite, spike- 

 lets near together, upper gl. and sterile floret awned or mucro- 

 nate hispid, rachis hispid. — E. B. 876. P. 67. Panicum Sm. 

 Oplismenus Kuntli. — A strong coarse grass ; found occasionally 

 on cultivated land. Near London. A. VII.] B. 



3. Setaria Pal. de Beauv. 



1 . S. viridis (Beauv.) ; pan. spikelike, involucral bristles with 

 forward teeth, lower pale smooth. — Panicum Sm., E. B. 875. 

 P. 68.— London and Norwich. A. VII. VIII. E. 



[2. S. verticillata {Beanv.) ; pan. spikelike, involucral bristles 

 with declining teeth, lower pale smooth. — Panicum Sm., E. B. 

 874. P. 69.— London and Norwich. A. VIL VIIL] E. 



