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Inflorescence of paired racemes gathered into a copious leafy false panicle, the pairs embraced below by, or eventually exserted from, linear to narrowly lanceolate spatheoles c. 5 cm long; racemes 2–4 cm long; internodes and pedicels cuneate to narrowly ellipsoid, ciliate with hairs c. 2 mm long.
Sessile spikelet 5–6 mm long, compressed between internode and pedicel; inferior glume linear, deeply depressed between the dorsal keels, glabrous; superior glume with an awn 8–16 mm long; superior lemma bidentate; awn geniculate, 30–50 mm long, rarely less.
Pedicelled spikelet 4–5 mm long, narrowly elliptic, membranous, glabrous to villous, 2-awned, the longer awn 5–11 mm long, the other much shorter.
Leaf sheaths glabrous or rarely loosely pilose; ligule up to 2 mm long; leaf laminas 8–40 cm × 1–5 mm, glabrous.
Caespitose annual; culms up to 150 cm high, ascending, branched above.
A grass herb. It is an annual plant. It forms mats. It grows 2 m high.
