Herbs, perennial, gynodioecious, 3-8 dm. Stems erect, branched or below ground level, glabrous or scabrous. Leaves fugacious; ocrea margins ciliate; blade linear, (3.5-)7-19(-28) × 0.2-0.5(-0.7) mm, base barely tapered, margins not hyaline, apex acuminate, minutely scabrous. Inflorescences (10-)14-22(-30) mm; ocreola encircling rachis, only the base adnate to rachis, apex acuminate. Pedicels spreading to reflexed in anthesis, sharply reflexed in fruit, 0.3-0.6 mm, as long or much longer than subtending ocreola. Flowers bisexual or pistillate; outer tepals loosely appressed in anthesis and fruit, white to pinkish, distal portion of midrib often inconspicuously greenish, narrowly oblong, 0.7-1.5 mm in anthesis, margins entire; inner tepals loosely appressed in anthesis and fruit, white to pinkish, narrowly oblong, 0.8-1.5 mm in anthesis, margins entire; filaments dimorphic, pubescent basally; anthers deep red; styles and stigmas ca 0.1 mm in anthesis. Achenes exserted, reddish brown to yellow-brown, 3-gonous, 2.2-2.8 × 0.5-0.7 mm, shiny, smooth. 2n = 22.
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