Culms 20-80 (120) cm, stout, usually with several shoots, sparingly branched; internodes shorter or longer than the sheaths. Sheaths often purplish; ligules 3-6 (12) mm; blades usually 6-16 (25) cm long, 2-5 (10) mm wide, flat. Panicles (5) 10-35 cm long, (2) 3-15 cm wide, usually open, pyramidal; branches spreading, naked at the base for 5+ mm, with spikelets usually borne towards the distal ends; pedicels 1-3 mm. Spikelets 2.4-3.2 mm, often purplish; rachillas prolonged for about 0.5 mm. Lower glumes 1.5-2.5 mm; upper glumes 2.4-3.2 mm; lemmas 1.6-3 mm, folded, scabridulous above midlength, awned, awns 5-12 mm; anthers 1-2 mm, greenish to yellowish, often purple-tinged. Caryopses 1-1.5 mm. 2n = 14.
"decumbent" is not a number.