Leaves ensiform, ½-8 cm long, up to 3 mm wide, stiff, subfalcate, obtuse, glabrous except for the papillate margin; sheath 5-20 mm, membranous along the margin, provided with an up to 2 mm long obtuse ligule. Peduncle 1-12 cm by c. 1 mm, quadrangular, with 4 papillate ribs. Head subglobose to ellpsoid, 1-5 by 0.8-3 mm. Basal bracts ovate, 1½-2½ by 1-1½ mm, acute to subacute, margin membranous with 5 complete nerves papillate in a narrow elliptic region in the upper⅔. Median bracts ovate, 2-4 by 1½-3½ mm, acute, sometimes mucronate, with one complete and 4 once forked descending nerves, papillate in a narrow elliptic region in the upper fourth. Lateral sepals 2½-4 by c. 1½ mm, acute, crest narrow, entire. Median sepal cap-shaped, 1½-2 by c. 1 mm, 1-nerved, papillate at the top. Petals 2-3 mm, limb spatulate, 1½-2½ by 1-2 mm, outer margin irregularly serrate, claw c. ½ mm. Stamens 0.4-1.2 mm, filaments 0.2-0.4 mm, anthers 0.2-0.8 mm, emarginate at the top, broadly emarginate at the base; cells with one obtuse tip, base obtuse. Staminodes absent. Ovary obovoid, obtuse, 3-sided, 1-celled, 1½-3½ by I-1½ mm. Styles 1½-2½ mm, 3-fid; arms ½-1 mm, their top fimbriate.
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