| 개요 | Herbs, perennial, 30–60 cm. Rhizomes 1–3 mm diam., with swollen nodes; nodes 5–8 mm diam. Culms erect, terete, 1–5 mm diam., smooth, hollow. Leaves basal and cauline, lowest leaf sheath-like or with short blade, cauline leaves 2–5; sheath open, 1–9 cm long; auricle 1–3 mm long, apex rounded, membranous; blade green, terete, linear, 5–30 cm × 1–5 mm, smooth, unitubulose, perfectly septate. Inflorescences terminal, with clusters of 1–10 (20) heads, 1–6 cm long; primary bract erect to ascending, linear, 1–5 cm long; heads 25–100-flowered, spherical, 10–15 mm diam. Flowers bisexual; tepals 6, light green, occasionally red or brown, margins white, lanceolate, narrowly acute; outer tepals 3, 3.8–5 × 0.3–0.5 mm; inner tepals 3, 3.2–4.4 × 0.3–0.6 mm; stamens 6, filaments ca. 0.8 mm long, anthers ca. 0.4 mm long; style 3-fid. Capsules equaling tepals or slightly exserted, brown, 1-locular, lanceolate, trigonous, 3.9–5 mm long. Seeds ellipsoid, ca. 0.4–0.5 mm long, brown, surface reticulate. |
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