Perennials, 15–60 cm tall, caespitose; rhizome ±horizontal, short-noded, densely branching. Cataphylls 1 or absent, stramineous; basal leaves 1, 4.5–15 cm long. Cauline leaves 1–3, 4.5–15 cm long, c. 1–2 mm in diam., terete, unitubular, septate; tip dark, acute; auricles 0.5–1 mm long, rounded, scarious. Lower bract terete, green, 1–8 cm long, shorter than the inflorescence, erect; other bracts herbaceous, lanceolate, 3–27 mm long. Inflorescence umbelloid to decompound anthelate, of 3–35 heads, 2–16 cm tall, with branches spreading (at least the lowermost); heads obconic to subspheric, 2–10 (–20)-flowered, 3–9 mm in diam. Tepals subequal, lanceolate, greenish becoming stramineous, loosely appressed to capsule, rigid, 3-veined, acuminate; inner tepals 2–3.2 mm long; outer tepals often slightly shorter, 1.8–3 mm long. Stamens 3, not exserted; anthers 0.4–0.6 mm long; filaments 1–1.5 mm long; style 0.2–0.3 mm long; stigmas 0.8–1 mm long. Capsules imperfectly trilocular, ovoid to prismatic, much exceeding perianth; apex acute below the c. 0.3 mm rostrum, 3–3.8 mm long, stramineous. Seeds 0.5–0.6 × 0.2–0.3 mm, or 0.7–1.2 mm long including appendages; appendages subequal or unequal, 0.1–0.3 mm long.