Trailing perennial; rooting at nodes; sheaths densely hairy with bulbous-based hairs; leaves cauline. Leaf blade lanceolate, 30-60 x 5-12 mm, apex acute, base cordate, amplexicaul, glabrous or hairy; margins thickened, often crinkled, usually scaberulous, bulbous-based hairs present at base. Inflorescence 30-110 mm long, open, obovate, sparsely branching; primary branches solitary or in clusters of 2 or 3 on same side of central axis. Spikelet 1.8-2.5 mm long, glumes and lemma apices usually purple; lower glume ovate, up to 1/2 as long as spikelet, 3-nerved (at least near base) rarely 1-nerved (on same inflorescence), not clasping all round; upper glume slightly shorter than lower lemma and as long as upper lemma, 9-nerved; lower floret male, lemma 9-11-nerved, at least at base; palea well developed; upper lemma crustaceous, pallid to straw-coloured, shiny apex with scattered stiff hairs; anthers 1.3 mm long, dark yellow, flushed purple.
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