Annuals, 6–23 cm tall, one- or few-stemmed. Leaves 5–25 cm long, usually reaching or sometimes exceeding inflorescence; basal leaves 1–3; cauline leaves 1 (–2), 0.3–0.8 (–1) mm in diam., unitubular, perfectly septate; leaf tip subulate; sheaths ±lax, with distinct scarious margins; auricles usually oblong, obtuse, rarely subacute, 2–3 mm long, scarious. Lower bract leaf-like, usually 1–3 cm long, shorter than inflorescence; capitulum bracts lanceolate, scarious, acute, usually 3–5 mm long. Inflorescence of (1–) 2–5 separate, sparse 4–14-flowered heads; heads ±globose in outline, with divaricate flowers; peduncles to c. 1–2 cm long. Tepals 5–7 (–9) mm long, c. 0.8–1.0 mm wide, with inner longer or rarely shorter than the outer, narrowly lanceolate to linear, subulate, greenish to reddish, later stramineous, with central band distinctly 3-veined and prominent, with narrow scarious c. 0.1 (–0.2) mm margin. Stamens 6, to 1/2 as long as tepals; anthers 1.8–2.5 mm long, 4–5 (–6) times as long as the c. 0.5 mm filaments; style long, difficult to distinguish from rostrum, c. 1 mm long; stigmas usually exserted, c. 1.5–2 mm long. Capsule unilocular, narrowly pyramidal-trigonous, 6–8 (–10) mm long, slightly exceeding perianth, gradually tapering in a thin rostrum at least 1 mm long, reddish-brown. Seeds 0.4–0.5 mm long, pyriform, shortly apiculate, reticulate.