Rhizome to c. 2–3 mm in diam. Cauline leaves c. 2–4 mm wide; auricles ±absent. Lower bract reduced, usually to 1–2 cm long, rarely to 6.4 cm. Inflorescence of 1–4 dark globose many-flowered heads c. 11–15 mm in diam. Tepals c. 3.5–4.7 mm long. Anthers 1.1–1.8 mm long; filaments 0.4–0.9 mm long; style 1.0–1.4 mm long; stigmas c. 1–2 mm long. Capsule 3.0–4.5 (–5.5) mm long.