Perennials 8–20 cm tall; rhizome ascending, long, without stolons. Basal leaves 5–8 cm long, 3–4 mm wide; sheath bases straw-brown to dull brownish. Cauline leaves 2(–3), usually 2.5–4.0 cm long, up to 2.5 mm wide. All leaves ±flat with leaf tip subobtuse, often with a short acute mucro; margins papillose-serrulate. Lower bract short, membranous, brownish at base. Inflorescence composed of 1–2 sessile and 1–4 pedunculate clusters (these sometimes composed of a few smaller sessile subclusters, rarely whole inflorescence subcongested); clusters ellipsoidal, usually 6–7 × 4 mm, pale brown to straw-brown; peduncles capillary, erect to arcuate. Bracteoles usually 1.5–1.8 mm long, pale brownish to membranous, fimbriate-ciliate. Tepals subequal (outer longer by 0.2–0.4 mm), 2.0–2.6 mm long, medium brown with broad membranous to stramineous margin above, entire. Stamens 6; anthers 0.4–0.5 mm long; filaments 0.5–0.7 mm long; style 0.2–0.3 mm long; stigmas c. 0.8 mm long. Capsule subacuminate, usually shorter than tepals; capsule segments ellipsoidal, brown, 1.5–1.6 × 1.0 mm. Seeds narrowly ellipsoidal, 0.9–1.0 × 0.5–0.6 mm, brown; appendage minute, less than 0.1 mm long; base fibrillate. 2n=36 [12'AL', 24'BL'], L.Hämet-Ahti & Virrankoski, Ann. Bot. Fenn. 8: 157, 1971.