440 CXLII. GRAMIXE.E. 



2, membranous, equal, longer than the flower. Flowering 

 glume on a hard, raised point, papery, eonvolute, 2-lobed, be- 

 tween the lobes bearing a _[ointed, 8-fid awn ; palea short, 

 obtuse. — i\>e5, I. c. p. 171. 



3 Cape species. Genus scarcely distiuct from the foIloN^ng. 



3S. ARISTIDA, Linn. 



Spilvclets paniclcd or subraeemose, 1-flowered, the flowering 

 glume stipitate. O uter glumes 2, membranous, unequal, mostly 

 pointless, the lower shorter. FloAvering glume hard, convo- 

 lute, awned at the apex, the awn 3-partite or 3-fid, with or 

 without a joint at base. Palea minute. Grrain terete, en- 

 closed in the flowering glume. — Kiinth, Enum. I. c. p. 187. 

 Arthratherum and Chsetaria, Nees, I. c. pp. 174, 186. 



A widely-dispersed genus, containing about 15 Cape species. — Tlic awn 

 is jointed and caducous in Arthratherum ; unjointed and persistent in 

 Chcetaria. 



SUBTEIBE 3. OeTZE^. 



39. LEERSIA, Soland. 



Spikelets 1-flowered, compressed, racemose - paniculate. 

 Outer empty glumes 0. Flowering glume and palea herba- 

 ceous, rigid, compressed, keeled, pointless, closed, about equal 

 in length. Stamens 1-3-6. G-rain compressed, free, covered 

 by the valves. — Nees, I.e. p. 193. 



L. Mexlcana is found in Uitenhage. Stamens 6 in tliis species. 



40. MALTEBRUNIA, Kunth. 



Spikelets 1-flowered, panicled. Outer glumes 2, small, 

 membranous, channelled and keeled, pointless. Flowering 

 glume and palea membranous, boat-like, subequal, compressed, 

 the glume much the wider, pointless. Stamens 6. — Nees^ I. c. 

 p. 194. 



M. prehensilis, found by Drege, is unknown to me. Culm much 

 bi'anched ; leaves subsessile, hairy on the margin and keel armed with 

 recurved, minute prickles. 



SUBTEIBE 4. CnLOEIDE^. 



41. MICROCHLOA, E. Br. 



Spikelets 1-flowered, unilateral, in solitary spikea. Outer 

 glumes 2, oblong, subacute, subequal, membranous, pointless, 

 the lower 3-nerved, keeled. Flowering glume and palea 

 shorter than the outer glumes, thinly membranous, transpa- 



