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Superior glume as long as the spikelet, oblong, membranous near the apex, 5-nerved, purplish, appressed hairy, hairs very slender, slightly undulating, often with incurved apex, often purplish.
A densely caespitose perennial on a very short rhizome, sometimes stoloniferous, base surrounded by velvety hairy cataphylls and withered leaf sheaths.
Inflorescence composed of 5–17 racemes, 8–20 cm. long, erect to patent, few together or solitary along a well developed common axis.
Leaf laminae 5–15 × 0.3–0.5 cm., linear, flat, loosely to densely hairy on both surfaces, scabrous along the margin.
Inferior lemma as long as the spikelet, oblong, membranous near the apex, 7-nerved, purplish, appressed hairy.
Rhachis triquetrous, scarcely winged, up to 0.3 mm. broad, smooth, with scabrous margins.
Superior lemma as long as the spikelet, oblong, acute, bluish green to bluish purple.
Pedicels 2-nate, 0.5–3.5 mm. long, triangular, scabrous, broadened at the apex.
Culms 40–120 cm., erect or creeping, glabrous, nodes dark and typically hairy.
Inferior glume up to 0.5 mm. long, ovate, truncate, nerveless, hyaline.
Ligule up to 3 mm. long, triangular, rounded.
Leaf sheaths loosely to densely hairy.
Spikelets 1.9–2.6 mm. long, oblong.
