Annual 180-600 mm high. Leaf blade to 170 x ± 2 mm, flat. Inflorescence 80-190 mm long, open. Spikelet 2.5-4.0 mm long; rachilla less than 1/2 as long as spikelet; glume 2.0-3.5 mm long, acute to acuminate, 1-nerved, keels scaberulous, awnless; lemma hairy, hairs up to 0.5 mm long, not spreading, 5-nerved, awned from middle of back; awn usually fine, geniculate; palea ± equal to slightly shorter than lemma; callus hairs up to 1/3 the lemma length; anther 0.2-4.0 mm long.
An annual plant; 0.18-0.60 m high. Leaf blades up to ± 170 x 2 mm. Flowers: panicle open; 80-190 mm long; spikelets 2.5-4.0 mm long; rachilla < 1/2 length of floret; glumes 2.0-3.5 mm long; lemmas hairy; 4-nerved; hairs up to 0.5 mm long; not spreading.
Annual to 60 cm. Leaves linear. Spikelets in an open panicle, 2.5-4.0 mm long.