124 



THE TRUE GRASSES. 



in Avena, many-flowered, but singly sessile in notches of 

 the articulate rachis ; awns slender. 



Species two, one, G.fragilis Beauv., in the regions of 

 the Mediterranean, the other ( G. geminiflora J. Gay), on 

 the Azores. 



FIG. 65. -Gaudiniafragilis Beauv. (After 

 Nees, Gen. Germ., I. 84.) 



FIG. 66. Danthonia provincialis 

 DC. (After Nees, Gen. Germ., 

 I. 50.) 



164. (164) Tristachya Nees (Monopogon Presl). Pani- 

 cles loose ; flowering glumes of the $ flower awnless, 

 that of the ? flower deeply cleft, and with a long, ge- 

 niculate and twisted awn. 



Species eight, in tropical America, the others in 

 tropical Africa and Western Asia. 



165. (165) Trichopteryx Nees (Loudetia Hochst.). Dis- 

 tinguished from the preceding only by the solitary 

 spikelets. Flowering glume often hairy. 



Species ten, in tropical and Southern Africa, one of 

 them also in Brazil. 



166. (166) Anisopogon Brown. Panicles loose, with 

 solitary, very large (4 cm. exclusive of the awns) spike- 

 lets ; flowering glumes five-cleft, four lateral points finely 

 awned, and the middle one with a strong geniculate awn. 



Species one (A. avenaceus Brown), in Australia. 



167. (167) Danthonia DC. Panicles loose or dense ; 

 flowering glumes rounded on the back, 7-9 nerved, fre- 

 quently fringed, two-cleft, the points sometimes two- 



