Plants with basal sheaths of previous year not persistent. Culms not easily compressed, angles obtuse, to 80 cm × 2 mm, glabrous. Leaves: sheaths of proximal 2–3 leaves bladeless, fronts smooth, indistinctly linearly veined, forming tubular extension distal to sheath-blade junction, apex colorless, fragile, U-shaped, entire; ligules obtuse, 4 mm, free limb to 3 mm; blades not epistomic, to 75 cm × 5 mm. Inflorescences densely spicate, elongate, with 15–20 distinguishable branches, 5–10 × 2.5 cm; proximal internode to 10 mm. Scales pale brown with hyaline margins. Perigynia pale brown with red-brown veins, 10–12-veined abaxially, 7-veined adaxially, to 5 × 1.7 mm, base distended proximally, cordate; stipe to 0.2 mm; beak to 2.5 mm, serrulate. Achenes broadly ovate, 1.7 × 1.5 mm; stalk to 0.15 mm; persistent style base cylindric, 0.15 mm.
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