Plants winter annual or annual. Taproots filiform. Stems erect to ascending, green, 5-30 cm, glabrous or sometimes stipitate-glandular distally or throughout, internodes of all stems 1-7 times as long as leaves; wintering stems absent. Leaves overlapping proximally, connate proximally, with loose, scarious to herbaceous sheath 0.1-0.5 mm; blade straight to variously curved, green, flat, prominently 1-veined abaxially, linear, 2-20 × 0.5-1.5(-1.8) mm, flexuous, margins not thickened, herbaceous, smooth, apex green or purple, blunt to acute, flat, ± shiny, glabrous to stipitate-glandular; axillary leaves absent. Inflorescences 5-30-flowered, open cymes; bracts subulate to ovate, herbaceous. Pedicels 0.3-3 cm, stipitate-glandular. Flowers: hypanthium shallowly disc-shaped; sepals prominently (3-or) 5-veined, narrowly to broadly lanceolate (herbaceous portion narrowly to broadly lanceolate), 4-5.5 mm, not enlarging in fruit, apex green or purple, narrowly acute to acuminate, not hooded, glabrous to sparsely stipitate-glandular; petals obovate, 1.5-2.2(-3) times as long as sepals, apex rounded, broadly notched. Capsules on stipe ca. 0.1 mm or shorter, narrowly ellipsoid, 3-4.2 mm, shorter than sepals. Seeds reddish brown to black, suborbiculate, radicle obscure, slightly compressed, 0.5-0.6 mm, tuberculate; tubercles low, rounded.
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