CXLII. GRAMINEiE. 447 



rent ; the glume broadly ovate, truncate, concave, 3-nerved ; 

 palea 2-keeled. — Nees, I. c. p. 24G. 



M. Caffra, Nees, the only Cape species, is a tufted grass ; leaves slender, 

 rigid, curled, with involute margms ; culms short, 1-spiked. — Eastern 

 district. 



42. CTENIUM, Panz. 



Spikelets in a double row along one side of a common 

 rachis, with 1 fertile flowering glume, and 2 lower and 1-2 

 upper imperfect male or neuter glumes. Outer glumes 2 ; 

 the lower minute, membranous, persistent, the upper herba- 

 ceous, with a reilexed, dorsal bristle. Imperfect flowering 

 glumes, pointless or setigerous. Fertile flowering glume se- 

 tigerous below the apex, keeled, ciliate ; palea longer, 2-keeled. 

 —Nees, I. c. p. 237. 



Very beautiful grasses. C. concinmim, Nees, which is said to resemble 

 the C. elegans of Senegal, was found by Drege near Natal ; it is unknown 

 to me. 



43. HARPECHLOA, Kunth. 



Spikelets in a double row along one side of a common 

 rachis, mth 1 (lowest) flowering glume fertile and 3 upper 

 neuter ones. Outer glumes 2, pointless, keeled; the outer 

 longer than the spikelet, the inner thrice as short, persistent. 

 Flowering glume and palea membranous, pointless ; the glume 

 obovate, keeled at back, and margins densely ciliate j palea 

 scarcely shorter, 2-keeled. — Nees, I. c. p. 238. 



H. Capensis is an elegant grass of the Eastern district. 



44. CYNODON, Eich. 

 Spikelet with 1 fertile and a rudimentary upper flowering 

 glume sessile on one side of a rachis, in digitate or geminate 

 spikes. Outer glumes 2, keeled, membranous, pointless, 

 nearly equal. Flowering glume membranous, acute, keeled, 

 sometimes mucronulate under the tip ; palea 2-keeled, com- 

 pressed. — Nees, I. c. p. 241. 



Eoots creeping ; culms short ; leaves rigid, margins involute. — 4 Cape 

 species, dispersed. 



45. EUSTACHYS, Desv. 



Spikelets with 1 fertile and 1 (upper) sterile flowering 

 glume, sessile, unilateral, in digitate spikes. Outer glumes 2, 

 membranous, the upper awned below the emarginate apex. 

 Flowering glume and palea membranous ; the gfume keeled, 

 the palea 2-keeled. — Nees, I. c. p. 248. 



E.petroia, a widely-dilTused and very elegant grass, occurs in the Eastern 

 district and Callraria. 



