CXLTI. OEA^FTNEiE. 451 



distant, rigid, often hardening, 5-11-nerved, 2-dentate, with a 

 dorsal knee-bent and basally-twisted awn. Grain channelled, 

 pubescent, clothed with the persistent palea. — Nees, I. c. p. 

 351. 



Oats ; A. sativa, A. orientalis, and A. fatua are more or less naturalized ; 

 A. hirsuta, Roth, may be indigenous. 



60. TRICHOPTERYX, Nees. 



Spikelets 2-flowered, with a rudimentary glume, panicled. 

 Outer glumes longer than the flowering, unequal, membra- 

 nous, 3-nerved, the lower smaller. Flowering glume sessile ; 

 the lower male, pointless, similar to the outer glume; the 

 upper fertile, rather more rigid, 2-fid, the lobes bristle-tipped, 

 with an interposed straightish, basally-twisted awn. — J^ees, I. c. 

 p. 339. 



T. Dreffeana, the only species, is a slender grass from Natal. 



61. CHJETOBROMUS, Nees. 



Spikelets 2- or several-flowered, in close, rigid panicles. 

 Outer glumes longer than the flowering, many -nerved, acute. 

 Flowering glumes faintly 9-nerved, mostly 2-fid, with entire, 

 bristle-pointed segments, with an interposed, basally-twisted 

 awn ; lower sessile, unlike the others, or all of difterent sexes. 

 —JS'ees, I. c. p. 340. 



Rigid grasses, resembhng DantJionla.—S Cape species. 



62. HIEROCHLOA, Gm. 



Spikelets in a diftuse or close panicle, 3-flowered. Outer 

 glumes keeled, membranous, subequal. Flowering glumes 

 keeled, the terminal hermaphrodite, diandrous, pointless; 2 

 lower male (1 rarely neuter), triandrous, mostly awned; palea 2- 

 keeled, the terminal flower 1-keeled. Ovary glabrous. Grain 

 free, oblique, slightly compressed, glabrous, covered by the 

 flowering glume and palea. — JVees, I. c. p. 6. 



Sweet-scented grasses. — 3 Cape species. 



SUBTRIBE 6. FeSTUCACE^E. 



63. FINGERHUTHIA, Nees. 



Spikelets articulated below the lower glumes, with 1-2 

 fertile flowering glumes and a pedicellate, neuter one, on 

 minute pedicels, which are very closely set in spiral order 

 round the rachis of an oval-oblong, dense spike, many empty 

 glumes (abortive spikelets) occupying the base of the spike. 



