Perennials, 25–55 cm tall, densely caespitose; rhizome ±short, vertical; stolons absent. Basal leaves densely ciliate, 3.5–6.0 mm wide; cauline leaves usually 3; upper leaves 2.5–6.5 cm long, 1.5–4.0 mm wide; all leaves with obtuse tip and margins papillose-serrulate. Lower bract usually 1.5–3.0 cm long, overtopping or less often shorter than inflorescence. Inflorescence usually a congested compact, ovoid to ±pyramidal head, of 4–8 clusters; clusters usually 7–10-flowered, sometimes some clusters pedunculate; peduncles straight, up to 0.9–3.0 cm long, ±smooth. Bracteoles 2.5–2.8 mm long, fimbriate-ciliate. Tepals ±equal, glabrous, ±lanceolate, acuminate, pale straw-brown or brown; margins paler to membranous above, usually 2.9–3.5 mm long. Stamens 6; anthers (0.6–) 0.7–0.9 mm long; filaments 0.6–0.8 mm long; ovary 1.0–1.2 mm long; style 0.5–0.8 mm long; stigmas 2.0–2.4 mm long. Capsules obovoid to subglobular, pale brown, ±obtuse, equalling or shorter than perianth; capsule segments 2.3–3.0 × 1.5–1.8 mm. Seeds ovoid or oblong-ovoid, 1.2–1.5 mm long, (0.8–) 0.9–1.0 mm wide; appendage 0.4–0.6 mm long, usually fibrillate. 2n=48 [48AL], fide H.Nordenskiöld, Hereditas 42: 10–11 (1956); J.Kirschner, Thaiszia, J. Bot. 2: 19–20 (1992); J.Kirschner, Pl. Syst. Evol. 200: 8 (1996).