Plants 10-50 cm tall. Stem erect, much branched. Leaves linear to linear-lanceolate, 2-6 cm × 2-4 mm, 1-veined, base attenuate, apex acuminate, mucronate. Spikelike inflorescence elongate, linear-cylindric, interrupted to ± dense, 5-10(-15) × 0.5-0.7 cm; bracts linear-lanceolate to narrowly ovate, 0.5-3 cm × 2-3 mm, 1(-3)-veined, base broadly cuneate, margin membranous, apex acuminate. Perianth segments 1(or 3). Stamens 1(or 3). Utricle obovate-oblong, 3-4 × ca. 2 mm, glabrous or covered with dendroid or stellate hairs, base broadly cuneate, apex acute; body narrowly obovate, smooth or slightly tuberculate; wing very narrow, margin entire or irregularly erose. Fl. and fr. Jun-Sep.
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