Plants perennial; rhizomes sometimes not evident, 0.3–0.5 mm thick, internodes 3–11 mm, scales not evident. Culms sometimes arched, smooth or obscurely 4-or 5-angled or-ridged, terete or slightly compressed, 6–25 cm × 0.15–0.3 mm, soft to firm. Leaves: distal leaf sheaths persistent, red proximally, colorless distally, closely sheathing, apex blunt. Spikelets ovoid, 2–6 × 1–2 mm, apex acute; scales 5–15, 5 per mm of rachilla, bright red-brown, midrib region green to stramineous, ovate, 1.5–1.7 × 1 mm, midrib keeled to obscure, apex blunt to acute. Flowers: perianth bristles absent; anthers 0.5–1 × 0.2 mm. Achenes with angles plus longitudinal ridges ca. 8–9, obscure to rather prominent, obovoid to obpyriform, much less than 2 times longer than wide, 0.55–0.6 × 0.3–0.4 mm, trabeculae 20–30, rather obscure and crowded. Tubercles brownish to whitish, pyramidal to depressed, 0.1–0.15 × 0.1–0.2 mm.
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