T: Argentina, Córdoba, San Justo, Concepción del Tío, 6 Nov 1952, A.Castellanos 6675; holo: LIL15398; iso: CORD.
Perennials, small, densely caespitose; stems in dense rows, filiform, slightly compressed, striate, yellowish when dry, 8–15 (–30) cm long, 0.5–0.7 (–1.1) mm in diam. Roots fasciculate, to 1 mm in diam., filiform; rhizome densely branched, short-noded, short-creeping, 1–2 (–3) mm in diam.; plant base covered with fibrous remains of old cataphylls. Cataphylls usually 0–2, yellowish brown. Leaves basal, 3–4, with blade usually short, to 5–10 (–15) cm long, c. 0.5–1.0 (–1.3) mm wide, flat, with adaxial band of membranous epidermal cells over most of leaf width; sheaths 1.5–4.0 cm long; auricles short, broadly obtuse, c. 0.2–0.5 mm long. Lower bract filiform, leaf-like, 1.5–6 cm long, ±equalling inflorescence, sometimes shorter or longer; upper bracts scale-like. Inflorescence terminal, erect, 1.5–3.0 × 1–2 cm, of 1–5 loose unilateral cymes, each up to 10-flowered; flowers borne singly. Bracteoles subequal, obtuse, scarious, 1.2–1.4 mm long. Tepals ±equal, or outer ones slightly longer, c. 4–6 mm long, lanceolate, acuminate, stramineous-brown; central band ±greenish, distinctly veined; margins distinct, membranous, broad. Stamens 3–6; anthers c. 0.8–1 mm long; filaments c. 0.6–1.0 mm long; style c. 0.1–0.2 mm long; stigmas c. 1.0–1.5 mm long. Capsule ellipsoid, triseptate, 3–4 mm long, thin-walled, brownish, ±obtuse, shorter than perianth. Seeds conical-ovoid, 0.30–0.4 × c. 0.2 mm, apiculate, slightly reticulate, castaneous; appendages ±absent.