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Perennial with scaly rhizomes, the basal sheaths glabrous or silky pubescent; culms 25–120 cm. high, soft; nodes glabrous.. Leaf-blades 5–30 cm. long, 2–7 mm. wide.. Inflorescence narrowly ovate, of 6–25 racemes borne irregularly or in untidy whorls upon an axis 4–20 cm. long, this often, but not always, longer than the racemes, with or without occasional long white hairs; racemes 4–10 cm. long, the spikelets paired (or sometimes the pedicel forked) on a triquetrous rhachis.. Spikelets elliptic, 2–2.6 mm. long; lower glume triangular to ovate, 0.1–0.5 mm. long; upper glume 3/4 to almost as long as the spikelet, 3(–5)-nerved, pubescent to pilose; lower lemma as long as the spikelet, 7-nerved, pubescent to pilose with fine soft smooth hairs, the hairs not extending beyond the spikelet; fruit ellipsoid, brown.
Inflorescence composed of (9)11–21 racemes, 2–11 cm. long, sometimes with a inferior whorl of 3–4 racemes, or all racemes solitary along a well grown common axis, often as long as the largest raceme.
Leaf laminae 7–20 × 0.3–0.7 cm., linear, flat, glabrous and smooth to scaberulous on both surfaces, scabrous along the margins.
Inferior lemma as long as the spikelet, oblong, 7-nerved, central zone somewhat broadened, nerves smooth, appressed hairy.
Superior glume c.3/4 of to as long as the spikelet, 3-nerved, appressed hairy, hairs very fine, white, smooth, acute.
Rhachis triquetrous, scarcely winged, up to 0.3 mm. broad, smooth to scabrous with a scaberulous margin.
Superior lemma somewhat smaller than the spikelet, oblong, slightly acuminate, reddish to dark brown.
Pedicels 2-nate, 0.5–2.5 mm. long, subtriangular to compressed, scaberulous, broadened at the apex.
A caespitose perennial, with a well grown rhizome, covered at the base by cataphylls.
Inferior glume up to 0.5 mm. long, ovate to triangular, often with a hyaline margin.
Culms 40–110 cm., erect, glabrous, nodes dark and glabrous.
Ligule up to 3 mm. long, triangular to truncate.
Leaf sheaths glabrous, smooth to scaberulous.
Spikelets 2.3–2.9 mm. long, oblong.
