1 6. GRAMINE AE 



93 



113. Outer glumes subcqual. — Species i. North-west Africa (Algeria). 



Wangenheimia Moench 



Outer glumes very unequal or only one present. — Species 50. Some are 



used for the manufacture of paper or as ornamental or fodder-plants. 



" Fescue." (Including Ctenopsis De Not., Nardurm Reichb., and 



Vulpia Gmel.) Festuca L. 



114. (108.) Outer glumes 4. Spikelets falling entire 115 



Outer glumes 2, usually persisting on the stalk of the spikelet. . .116 



115. Outer glumes i-nerved. Flowering glumes 5-nerved. Styles short. — 



Species i. South Africa Tetrachne Nees 



Outer glumes 3 — 8-nerved. Flowering glumes 7 — ii-nerved. Styles 

 long. — ■ Species 2. South Africa and Angola. (Under Tetrachne Nees). 



Entoplocamia Stapf 



116. Outer glumes shortly awned, much longer than the flowering glumes. 



Spikes short, distant, at length bent downward. — Species 2. Central 

 Africa and Egypt. Used as orna.mental grasses. [Dineha Jacq.) 



Dinebra Jacq 

 Outer glumes unarmed or mucronate,shorter than the flowering glumes. 117 



117. Spikelets very densely crowded. Spikes digitate, at least the upper. 118 

 Spikelets not very densely crowded. Spikes distant iig 



118. Spikes ending in a point. Outer glumes mucronate. ■ — • Species 6. Used 



as cereals, fodder-, medicinal, or ornamental plants, and for making beer. 



(Under Eleusine Gaertn.) Dactyloctenium Willd. 



Spikes terminated by a spikelet. Outer glumes usually unarmed. Peri- 

 carp usually loose. — Species 10. The coracan {E. coracana Gaertn.) is 

 cultivated as a cereal and for the preparation of beer ; other species are 

 used as medicinal or ornamental plants. (Including Acrachne Wight 

 & Arn.) Eleusine Gaertn. 



119. Flowering glumes rounded on the back. Pericarp more or less adhering 



to the palea. (See 113.) Festuca L. 



Flowering glumes keeled. Pericarp free 120 



120. Glumes thinly membranous, the outer subequal 121 



Glumes firmly membranous, glabrous, the outer conspicuously unequal. 122 



121. Flowering glumes 4-toothed, shortly awned. — -Species 3. East and South 



Africa. (Under Diplachne Beauv.) . . Leptocarydium Höchst. 

 Flowering glumes entire or obscurely 2 — •3-toothed. (See 107.) 



Leptochloa Beauv. 



122. Spikelets 2 — 8-fiowered, with a jointed, cihate axis. Lodicules very small. 



Fruit hnear-oblong, closely enveloped by the glumes. — Species 2. South 

 and East Africa. Used as fodder-grasses. (Under Eragrostis L. or 



Leptochloa Beauv.) Pogonarthria Stapf 



Spikelets many-flowered, with a tough axis. Lodicules rather large. 

 Fruit ovate, loosely enveloped by the glumes. — -Species i. East Africa 

 and Egypt. {Stapf iola O. Ktze., under Eragrostis L.) Desmostachya Stapf 



