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Slender, tufted annual; 70-200(-300) mm high; outer culms geniculate and spreading from base. Leaf blade 30-70 x 1 mm, setaceous, rolled; ligule to 4 mm long, membranous. Inflorescence open, delicate, much branched; pedicels 1.5-7.0 mm long. Spikelet 2-3 mm long; 2-5-flowered; glumes unequal, hyaline; lower glume scale-like; upper glume to 1 mm long; lemma 1.25-1.50 mm long, obtuse or rounded, awnless or minutely awned, scabrid; anther 0.2-0.3 mm long.
Delicate annual, up to 200 mm tall. Leaves linear, rolled, thread-like; ligule a long unfringed membrane. Inflorescence a delicate, open panicle; pedicels club-shaped. Spikelets 2-3 x up to 1.5 mm, many-flowered, glumes and lemmas awnless, minutely awned or mucronate; glumes unequal, shorter than spikelet, lower glume 0.1-0.4 mm long, nerveless; lemmas glabrous, occasionally minutely scabrous.
Slender annual to 20 cm. Leaves linear, rolled, setaceous. Spikelets 2-3 mm long, in a delicate, open panicle.
