(Buchenau) V.I.Krecz. & Gontsch. in V.L.Komarov (ed.), Fl. URSS 3: 528 (1935)
Perennials, c. (30–) 50–60 (–70) cm tall, loosely caespitose; slender rhizome creeping; stolons absent, stems ±terete to slightly compressed. Cataphylls 0–2, pale brown; blades filiform, to 3 mm long. Sub-basal leaves 1–2; cauline leaves pale green, usually 1–3, to c. 30 cm long, often exceeding inflorescence, to 1.2 mm wide, ±flat to canaliculate; apex acute; auricles broad, to 0.3 mm long, scarious. Lower bract leaf-like, ±filiform, to c. 20 cm long, usually much exceeding inflorescence. Inflorescence lax, usually (3–) 7–10 (–15) cm long, ±decomposite, anthelate, c. 15–80-flowered; flowers borne singly. Bracteoles ±membranous, ovate-lanceolate, acute, to c. 1.3 mm long. Tepals ±equal, ±ovate; outer tepals subobtuse to obtuse, slightly cucullate distally; inner tepals obtuse, c. 2.2–2.7 mm long; central band greenish, later pale brownish, bordered ±castaneous; margins distally broad, membranous. Stamens 6; anthers 0.6–0.8 mm long; filaments 0.5–0.7 mm long; style to c. 0.2 mm long; stigmas c. 1 mm long. Capsule ±trilocular, oblong-ovoid, subtrigonous, acute to ±acuminate, with a mucro to 0.2 mm long, c. 2.5–3.0 mm long, much exceeding perianth, castaneous-brown, shiny. Seeds ±ovoid, apiculate, c. 0.45–0.50 × c. 0.3 mm, pale brown, longitudinally striate, transversely reticulate; appendages absent.