92 l6 GRAMINEAE 



102. Spike I, terminal 103 



Spikes 2 or more, sometimes fascile-like 105 



103. Flowering glume many-nerved, awned. Styles united at the base, with 



shortly bearded, at length spirally twisted stigmas. — Species i. Central 



Africa. Streptogyne Beauv. 



Flowering glume 3-nerved. Styles free, with feathery stigmas. 104 



104. Spikelets awned, imbricate, in slender spikes. — Species 6. East and 



South Africa, Madagascar and Seychelles. . . . Enteropogon Nees 



Spikelets awnless, crowded, in stout spikes. — Species i. South Africa. 



Harpechloa Kunth 



105. Spikes in false whorls or closely superposed. — Species 25. Some are used 



as ornamental or fodder-plants. (Plate 8.) ... Chloris Swartz 

 Spikes all distant or the lowest only approximate 106 



106. Spikes very short and very dense. Outer glumes ciljate, with a straight 



awn. Flowering glume with 3 awns. Several empty glumes above the 

 flowering glume. Low grasses. — Species i. Northern East Africa. 



Melanocenchris Nees 



Spikes more or less elongated and loose. Flowering glume with i awn 



or awnless. Rather tall grasses 107 



107. Flowering glume awned, 2-toothed. Empty glume above the flowering 



one awn-like. Spikes very loose, at first erect.- — ^ Species i. Abyssinia. 



Gymnopogon Beauv. 



Flowering glume awnless. Spikes rather dense, spreading. — Species 8. 



Central Africa. Some have edible seeds. (Including Cyphokpis 



Chiov.) Leptochloa Beauv. 



108. (95.) Spikes I — 3, terminal 109 



Spikes more than 3 114 



109. Flowering glumes with 3, sometimes very short awns. Spikelets many- 



flowered. Spikes long, rather loose. — Species 4. Central Africa. 



Tripogon Roth 

 Flowering glumes with one awn or mucro or unarmed. Spikes dense, 



usually short no 



no. Flowering glumes with a rather long awn, long-haired on the back. Spike- 

 lets 2 — 3-fiowered. — Species 6. Central and North Africa. (Including 



Lepidopironia Rich.) Tetrapogon Desf. 



Flowering glumes unarmed or mucronate in 



111. Spikes 2 — 3 together Spikelets 3 — ^4-flowered. Fruit almost orbicular. 



Leaves rather broad. — Species i. Egypt and Nubia. (Lender Erag- 



rostis Beauv.) Coelachyrum Nees 



Spike solitary. Fruit oblong. Leaves narrow 112 



112. Spikelets 2-fiowered. Flowering glumes and paleas delicately mem- 



branous. — Species 3. South Africa. {Prionanthium Desv.) 



Prionachne Nees 



Spikelets 3- to many-flowered. Flowering glumes and paleas firmly 



membranous, rather stiff T13 



