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Perennial, tufted, up to 1.8 m high. Rhizome swollen, woody; culms brittle, often branched, with a waxy bloom below node, nodes occasionally hairy. Leaf blades 100-250 mm long, 5-9 mm wide. Spikelets 5-9 mm long, spikelets light or sienna brown; upper glume and lower lemma 3-nerved; lower lemma with 3 tufts of white hairs on either side above middle, lobes acute and 1.0-1.5 mm long, awns 7-12 mm long.
Superior lemma 5-nerved, pilose and with a row of 6 tufts across the back, setaceously bilobed (setae up to 1 mm. long), with an awn 6–12 mm. long.
Inferior glume 1/2–3/4 length of spikelet, acute to setaceously acuminate.
Leaf laminae 4–12 mm. wide, flat, glaucous, the margins not crinkly.
Palea keels narrowly winged, papillose between keels.
Perennial with swollen rootstock.
Culms 60–150 cm. high, woody.
Inferior lemma 3(5)-nerved.
Spikelets 5–9 mm. long.
Panicle 10–35 cm. long.
