d long, panicles and
the flowering glumes are rigid or hard, and awned.

The third glume is narrow, long, awn 3-fid 31. Aristida.

Sub. Tribe 2. =Euagrosteae=.--The spikelets are very small, in open or
contracted panicles.

The third glume is thin and membranous, awnless. 32. Sporobolus.

=Chlorideae= is also a small tribe with about ten genera, most of them
being very common in Southern India. The spikelets are unilaterally
biseriate on the rachis which is not jointed at the base. There are one
or more flowers in the spikelet, all or only the lowest being bisexual.
The rachilla is jointed just above the empty glumes and it is produced
or not beyond the flowering glumes. The inflorescence consists of
spikes, or spiciform racemes, solitary or digitate, and in some it is
paniculate.

Rachilla produced beyond the flowering glume.

Spikes usually solitary.

Spikelets 1- to 2-flowered, pedicelled and
in deciduous clusters, awned. 33. Gracilea.

Spikelets 1- to 2-flowered, not clustered
awned. 34. Enteropogon.

Spikes or spiciform racemes digitate or whorled.

Spikelets 1-flowered and with three
glumes, awnless. 35. Cynodon.

Rachilla not produced beyond the flowering glumes.

Spikelets 2- or more-flowered, glumes
five or more, awned, upper flowers
imperfect. 36. Chloris.

Spikelets 3- to 6-flowered, densely crowded,
awnless. 37. Eleusine.

Spikes or spiciform spikes racemed,
spikelets 2- to 3-flowered, 4- to 5-glumed,
awned. 38. Dinebra.

Spikes panicled, filiform, spikelets very
minute one-or more-flowered, glumes
awnless. 39. Leptochloa.

31. Aristida, _L._

These are tufted, annual or perennial grasses. Spikelets are panicled,
1-flowered, laterally compressed, with the rachilla jointed above the
empty glumes, 3-glumed. The first and the second glumes are narrow,
keeled, 1-nerved, awned or not and persistent. The third glume is very
narrow, cylindric, coriaceous, convolute, acuminate, 3-nerved, tip
produced into a long 3-partite, naked or hairy awn twisted below the
branches, with a minute palea which is convolute