Perennials, usually 10–15 (–20) cm tall, sparsely hairy, loosely to densely caespitose with ascending densely branched to simple rhizome, sometimes with short ascending vegetative shoots; plant base usually deep purple-brown, shiny. Basal leaves up to 6–9 cm long, ±subcanaliculate to ±flat, 1.5–2.5 mm wide; tip acuminate; cauline leaves 1–2, usually 2–4 cm long, 1.0–1.5 mm wide. Stem 0.5–0.9 mm in diam. below inflorescence. Lower bract membranous, less often brownish-membranous, usually 4–9 mm long. Inflorescence composed of one sessile and often 1-2 pedunculate clusters; peduncles without secondary branches, erect, straight, less often arcuate or recurved, c. 0.3 mm in diam.; sessile cluster bigger (sometimes with a discernible basal subcluster), usually more than 10-flowered, 7–10 × 6–7 (–9) mm; pedunculate clusters smaller, 5–12 (–14)-flowered, 5–6 (–7) × 4–5 (–6) mm. Bracteoles ±ovate, brownish, c. 1 mm long; membranous apex fimbriate-ciliate. Tepals ±equal, usually 2.0–2.3 mm long, ±acuminate to acute, dark brown. Stamens 6; anthers 0.4–0.5 mm long; filaments 0.5–0.7 mm long; style c. 0.2 mm long; stigmas 0.8–1.0 mm long. Capsule ±ovate, with top rounded, ±not mucronate, shorter than or equalling tepals, blackish brown to dark castaneous brown; capsule segments ovate, 1.8–2.0 × c. 1.3–1.4 mm. Seeds narrowly ellipsoidal, 1.0–1.1 × 0.6 mm, ±pale brown, distally dark apiculate; base fibrillate; appendage not visible. 2n=36, Á.Löve & D.Löve, Univ. Colorado Stud. Ser. Biol. 24: 26 (1966).