Stem prostrate proximally and erect distally, or wholly decumbent, elongate, terete, 13--22 cm × 2--5 mm, covered with sheaths and with a few roots (1--)2--3 mm thick. Leaves in distant tufts, indistinctly petiolate, long linear to narrowly elliptic-linear, 14--30 cm × 6--11 mm, 5--9-veined, base slightly attenuate, apex acuminate. Scape arising from an apical leaf axil, slightly compressed, narrowly 2-winged. Inflorescence a reduced panicle, 4.5--6.5 cm, 14--18-flowered; bracts linear-lanceolate to narrowly ovate, basal one ca. 2 cm, base 3--5 mm wide, membranous. Flowers in clusters of 2 or 3; pedicel 6--9 mm, shorter than bracts, articulate proximally or near middle. Tepals reflexed distally, purple with white margin, narrowly ovate to lanceolate, ca. 7 × 2.3 mm, apex obtuse. Seeds broadly ellipsoid, 8--11 × 5--8 mm.
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