388 97. GRAMINEJE. 



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 rachis. GEL 1 2, opposite to the 

 rachis, cartilaginous, covering the 1 fl. and superior rudi- 

 ment. Pales scarious. Stigmas feathery. 



.14 Glume solitary, bractlike, or the upper very small. 



50. LOLIUM. Spikelets solitary, placed edgewise on the rachis. 

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

 more flowers. 



Suborder I. Clisanthea. Tribe I. Panicea. 



1. DlGITARIA Scop. 



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

 lanceolate glabrous with downy margins (?). E. B. 849. P. /O. 

 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 Beauv. 



[1. E. Crus-galli(BesMv.}', 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 Kunth. A strong coarse grass ; found occasionally 

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



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(Besi\iv.)', pan. spikelike, involucral bristles 

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

 874. P. 69. London and Norwich. A. VII. VIII.] E. 



