DESCRIPTIONS OF TRIBES AND GENERA. Ill 



I. Spikelets two-flowered, upper flower $ or 

 ? , lower $ . 



1. Spikelets in threes, terminal on the 

 branches of the panicle. 164. Tristachya. 



2. Spikelets solitary, terminal on the 

 branches of the panicle. 



165. Trichopteryx. 

 II. All the flowers $ , or the upper imperfect. 



1. Spikelets one-flowered, very large. 



166. Anisopogon. 



2. Spikelets 3-co -flowered. 167. Danthonia. 



Note. — Compare the Festucece ; OrapTiephorum, 

 Schismus, Dupontia, Dissantlielium (all awnless). 



145. (157) Holcus L. (in part). Spikelets paniculate, 

 two-flowered, upper flower $ (rarely 



£ ), awned ; lower § , awnless, its 

 flowering glumes finally indurated, 

 shining ; empty glumes keeled, the 

 upper one often short-awned. 



Species eight, in Europe and 

 North Africa, especially the western 

 part, one in Cape Colony. H. lanatus 

 L. (Fig. 57), with woolly or downy 

 leaves, is of some value for forage. 



146. (147) Prionachne Nees (Ghon- 

 drolrpna Nees [Prionanth/inn Desv.]). 

 Panicle narroAv, spike-like ; spikelets 

 awnless. somewhat like those of fig. 57.— Holcus lanatus 



. L. (After A. Gray, Man. 



rhamris. pi. 12.) 



Species one (P. dentate Nees), in South Africa. 

 Ktenosachne Steud. may also belong here. 



147. (146) Eriachne Brown (Fig. 58). Panicle loose 

 or dense. Empty glumes many-nerved ; flowering 

 glumes awnless or with fine terminal awns, finally 

 somewhat indurated. Two flowers " apparently inserted 

 at the same point, without any development of rachilla" 

 (Benth. Notes, Gr. 92). 



Species about twenty-two, all but two Asiatic and 

 Australian. 



Megcdachne Thwaites, belongs here. 



