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Information Annualsavannagrass, with a considerable range of variation in both spikelet and vegetative characters.

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Information Spikelets 2-nate on the nodes of the very fragile rhachis of stout cylindric spike-like racemes which terminate the culms and their scanty branches, different in sex, very similar in shape and size excepting the terminal spikelet which is sometimes very long and slender; joints linear and slender below, cup-shaped and hollowed out upwards, free and distant from the linear, upwards slightly widened, and not hollowed pedicels, joints and pedicels ciliate along the posticous edges; disarticulation of the spikelets at a right angle to the rhachis, of the pedicelled spikelets very tardy. Sessile spikelet dorsally somewhat compressed, its narrow callus fused with the bases of the adjacent joint and pedicel into a minutely bearded ring from the centre of which protrudes a knob fitting into a cup-shaped hollow of the next lower joint, the whole plexus falling together. Florets 2, lower ♂, upper hermaphrodite, awnless. Glumes equal; lower coriaceous, flat or convex on the back with very narrow inflexed margins, 2-keeled upwards, the keels widened upwards into a crest or wing, obtuse; upper boat-shaped, keeled and winged upwards. Valves hyaline, 3-nerved. Valvules as long as the valves, 2-nerved. Lodicules 2, cuneate. Stamens 3. Stigmas laterally exserted. Grain unknown. Pedicelled spikelet similar to the sessile, but the lower glume convex, winged on one side only and the upper asymmetrical; both florets ♂ or one barren. —Annual (or sometimes perennial?) somewhat coarse grasses, sparingly branched; blades lanceolate-linear, flat; ligules a line of short hairs; racemes dorsiventral, with the sessile spikelets placed anticously and the pedicelled posticously.

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