Short-lived perennial; culms 60–150 cm. long, scandent or sprawling and matted, often rooting at the nodes, these pubescent.. Leaf-blades broadly linear to narrowly lanceolate, 10–30 cm. long, 3–17 mm. wide, plicate, firm, dark green, sometimes falsely petiolate.. Panicle narrowly lanceolate, 10–20 cm. long, the spikelets untidily condensed about the puberulous primary branches; bristles 3–10 mm. long.. Spikelets elliptic, 2–2.5 mm. long, obtuse; lower glume 1/4–1/3 the length of the spikelet, broadly obtuse to truncate; upper glume 4/5 to as long as the spikelet, clearly 7-nerved, obtuse to subacute; lower floret ♂, its lemma usually with the midnerve and sometimes also the laterals depressed; upper lemma quite smooth and shining.
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