600 
CXIII. GRAMINEiE 
usually narrow, tapering to a fine point, edges often rough. Ligule 
short, hairy. Spikelets awned, 1 -flowered, all in pairs, one sessile, 
the other stalked ; or all in threes, one sessile, two stalked ; or the 
terminal spikelets of a spike are in threes and the others in pairs. 
Spikes in pairs or in clusters near the top of the stems or distri- 
buted along the branches of a spreading panicle, usually bearing 
many spikelets, sometimes few, rarely only three. In some 
species the lower spikelets in a spike contain only male or rudi- 
mentary flowers. Sessile spikelets : empty glumes 3, the lowest 
usually with prominent, marginal keels, the next nearly as long, 
the uppermost smaller, thin ; flowering glume 1 , narrow, thin, tip 
bifid, awned, sometimes reduced to the awn alone, containing a 
female or 2-sexual flower. Stalked spikelets : empty glumes 2 or 
3 ; flowering glume 1, awnless, containing a male or a rudi- 
mentary flower ; stalk short, usually hairy. Stamens 3. Styles 
2, distinct, fringed. Grain free within the hardened, persistent 
glumes. 
It was the author’s intention to rewrite this genus and restore Heteropogon , 
Chrysopogon, Sorghum , etc., to generic rank, on the lines of Bentham and 
Hooker’s Genera Plantarum ; but indisposition prevented it from being carried 
out. The classification is Hackel’s, which is also adopted in the Flora of 
British India. 
Spikes in a digitate, terminal or axillary cluster. 
Flowering glume of sessile spikelet membranous, bifid 
Flowering glume of sessile spikelet reduced to an awn. 
Lower empty glume of sessile spikelet acute . 
Lower empty glume of sessile spikelet obtuse . 
Spikes long-stalked, umbellately clustered in a leaf-axil, 
rarely solitary ....... 
Spikes in pairs, terminal on a slender stalk, sheathed in 
a spathe-like bract. 
Spikes woolly with long, white hairs . . . 
Spikes thinly and shortly hairy. 
Spikes in. Bracts numerous, red- brown. 
Leaves in. broad ; base stem -clasping . 
Leaves less than £ in. broad ; base not stem- clasping 
Spikes 1^ in. Bracts solitary or few. 
Spikes 1-1 1 in. Lowest empty glume flat-backed 
Spikes f-1 in. Lowest empty glume concave on 
back ........ 
Spikes on the branches of a panicle, not sheathed. 
Spikelets in pairs. 
Spikes of many pairs of spikelets. Lower empty 
glume of sessile spikelet pitted on the back 
Spikes of few, rarely more than 3 pairs of spikelets. 
Leaves less than \ in. broad. Spikelets jL in., with 
a basal tuft of hairs ..... 
Leaves I~l| i n * broad. Spikelets i in., naked at 
the base . . . . 
Spikelets in threes. 
Sessile spikelets J in. Keels of the lower empty 
glume minutely prickly- toothed 
Sessile spikelets ^ in. Keels of the lower empty 
glume smooth ...... 
1. A. tristis. 
2. A. Ischcemum. 
8. A. annulatus. 
9. A. contortus. 
10. A. Iwaraneusa. 
11. A. Schcenanthus. 
12. A. Nardus. 
13. A. distans. 
14. A. Gidarha. 
3. A. intermedins. 
4. A. micranthus. 1 
5. A. halepensis. 1 
6. A. Gryllus. 
7. A. monticola. 
1 A few of the spikes are occasionally reduced to a single group of 3 
spikelets. 
