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Inferior lemma as long as the spikelet, oblong-lanceolate with recurved margins, 7-nerved, the central and two pseudomarginal nerves well developed, appressed hairy, hyaline.
Superior glume c. 1/2–2/3 of the spikelet, oblong-triangular, 3(5)-nerved, hyaline, appressed hairy, hairs long, hyaline to rufous, capitate-apiculate at the apex.
Inflorescence composed of (2)3–4 racemes, (5)10–25 cm. long, erect, sometimes closely together, solitary on a short common axis.
Culms 40–100 cm., erect, glabrous or loosely appressed hairy, nodes dark, glabrous or loosely appressed hairy.
Rhachis triquetrous, narrowly winged, up to 0.5 mm. broad, undulating, smooth with scabrous margins.
A robust, rhizomatous perennial, base surrounded by cataphylls and hairy leaf sheath remnants.
Pedicels 3–4-nate, 0.5–3 mm. long, triangular, somewhat broadened at the apex.
Superior lemma as long as the spikelet, oblong-lanceolate, acute, dark brown.
Inferior glume short, ovate, truncate, nerveless, hyaline.
Leaf sheaths loosely or densely hairy or glabrous.
Ligule 1–1.5 mm. long, truncate, shortly ciliate.
Spikelets 3.0–4.0 mm. long, oblong-lanceolate.
