100 l6. GRAMINEAE 



Flowering glume of the lower flower awned, 2-toothed. Outer glumes 

 T_..pervcd. Spikek-ts lanceolate-elliptical. — Species 20. Extra-tropi- 

 cal regions and niovmtains of the tropics. Some species are used as 



fodder- or ornamental grasses Trisetum Pers. 



176. Awns of the flowering glumes jointed, thickened towards the tip.— Species 



3. North Africa. (Under J /m L.) . . . Corynephorus Beauv. 



Awns of the flowering glumes not jointed, slender throughout. — Species 



5. Azores, Canaries, high mountains of Central Africa, subantarctic 



islands. Used as ornamental grasses. {Under A ira L.) 



Deschampsia Beauv. 



'^77- (I53-) Flowering glumes of the fertile flowers cleft in 3—23 awn-Uke 



or awn-bearing lobes. [Subtribe pappophorinae.] .... 178 



Flowering glumes entire or 2-lobed, rarely (Triodia) 3-lobed, bearing a 



single awTi or unawned 182 



178. Flowering glumes 3-cleft, with 3 awns. Spikelets 5 — 15-flowered, in 



panicles. — Species 9. Southern and Central Africa, Sahara, Egypt. 



Some are used as fodder-grasses Triraphis R. Br, 



Flowering glumes 4— many-cleft, with 5 or more awns. Spikelets 2 — 6- 

 flowered 179 



179. Flowering glumes with 5 — 9 awns springing from the back of the lobes. 



Style I, short and broad, 2-cleft. Spikelets 2 — 3-flowered, in dense 



panicles. — Species i. Egypt Boissiera Höchst. 



Flowering glumes with 5 — 23 awns springing from the tips of the lobes 

 or from the notches between them. Styles 2, free 180 



180. Flowering glumes with 9 — 23 awn-Uke lobes. Spikelets 2 — 3-flowered, 



in spike-hke panicles. (See 142.) .... Pappophorum Schreb. 

 Flowering glumes with 5 — 7 awns or awn-Uke lobes 181 



181. Flowering glumes with 5 — 7 subequal, awn-Uke lobes. Spikelets 2 — 3- 



flowered, in heads. — Species i. North-west Africa, Echinaria Desv. 

 Flowering glumes with 9 lobes, 5 of which are awn-Uke. Spikelets 4 — 6- 

 flowered, in rather loose panicles. — Species 3. Central and South 

 Africa and Egypt. Used as fodder and in medicine. {Antoschmidtia 

 Steud.) Schmidtia Steud. 



182. Axis of the spikelets or flowering glumes covered with long hairs enveloping 



the glumes. [Subtribe arundinae.] 183 



Axis of the spikelets and flowering glumes glabrous or short-haired. 185 



183. Flowering glumes firmly membranous, 5-nerved, hairy like the axis of 



the spikelets. Ovary hairy at the top. Leaves narrow, more or less 

 rolled up. Low grasses. — Species i (.4. tenax Link). North Africa. 

 Used for making paper, in plaiting-work, as fodder, and as an orna- 

 mental plant Ampelodesma Beauv. 



Flowering glumes delicately membranous, 3-nerved ; if hairy, then axis 

 of the spikelets glabrous. Ovary glabrous. Leaves flat and rather 

 broad. Tall grasses 184 



