Perennials 10–65 cm tall, subglabrous, loosely caespitose; rhizome branched, ascending; stolons often present, short. Basal leaves few, intermediate between cataphylls and cauline leaves; cauline leaves 3–5, 1.5–9.0 mm wide. All leaves with papillose-serrulate margins; apex acute. Lower bract herbaceous to subherbaceous, shorter than or rarely ±equalling inflorescence. Inflorescence a loose to subdense suberect or ±nodding panicle to 7 × 6 cm; flowers borne singly and in 2–3 (–7)-flowered clusters. Bracteoles ovate-lanceolate, 1.5–2.0 mm long, brownish, ciliate. Tepals ±equal, glabrous, lanceolate, with outer ones acuminate, 1.8–3.3 mm long, blackish brown to dark castaneous-brown; margins indistinct or very narrow. Stamens 6; anthers 0.6–1.2 mm long, 3–9 times longer than filaments; filaments 0.1–0.4 mm long; style 0.6–1.2 mm long; stigmas 1–2 mm long. Capsule ovoid to oblong-ovoid, subobtuse to ±acute, shortly mucronate, usually ±exceeding perianth, dark castaneous-brown, smooth; capsule segments usually 2.1–2.4 × 1.2–1.5 mm. Seeds pale brown, oblong-ovoid, 1.1–1.3 mm long, 0.6–0.7 (–0.9) mm wide; apex distinct, pale, to 0.1–0.2 mm long; basal appendage minute, as a paler patch to 0.1 mm long; base fibrillate.