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Lemma c. 3.5-4 mm. long (including the callus), conspicuously asperulous-tuberculate, especially towards the apex, tapering gradually into a column; callus 0.5-0.75 mm. long, curved, with an oblique, glabrous, long and acute point, having a ring of short hairs near the point and a ring of long hairs at the base of the lemma; column 7-10 mm. long, hairy towards the apex or twisted; central awn 5-7 cm. long, plumose all over or naked in the lower part and plumose towards the apex, with a naked excurrent apex; lateral awns up to 2.5 cm. long, very delicate, naked.
Glumes nearly equal or somewhat unequal, acute or subacute, hirtellous or ciliate at least on the back, 3-nerved; the inferior 6-11 mm. long, rounded or slightly keeled, abruptly contracted or truncate and erose, with a short mucro; the superior 10-13 mm. long, subobtuse or subacute, slightly 2-fid or emarginate, with a short awn from the sinus.
Panicle 30 x 20 cm., lax and much branched, sometimes with more or less spreading branches, or contracted with short branches; axis terete in the lower part, angular and scaberulous upwards.
Leaf-laminae 6-20 cm., c. 1 mm. when expanded, convolute, setaceous, scaberulous or hirtellous above, with a few long hairs near to the base, scaberulous beneath.
A herb. It is an annual grass that forms tufts. It can keep growing fro a few years. It grows 80 cm high. The leaf blades are 6-20 cm long.
Leaf-sheaths finely scaberulous, slightly compressed, with broad hyaline margins, the lower ones reduced to scales, the upper ones tight.
Culms erect, simple, sometimes branched in the upper part, scaberulous or almost glabrous, 2-5-noded; nodes glabrous.
Ligule a short-ciliate rim; auricles densely barbate; collar glabrous.
Annual or perennial, up to 80 cm. high, caespitose.
Spikelets pallid or purplish-brown.
Convolute leaf-blades, 45 cm. high.
Tufted annual
