T: Argentina, Mendoza, Tunuyán, Cerro de las Piedras, 2220 m, 23 Mar 1935, A.Ruíz Leal 3105; lecto: LIL46294A, designated here; iso LIL46294B.
Perennials 25–60 cm tall, sparsely hairy caespitose; rhizome short; stolons absent. Basal leaves usually 12–15 cm long, 3.5–6.5 mm wide. Cauline leaves 2–3; upper ones usually short, 3–6 cm long, 2.5–3.5 mm wide. All leaves acute-subulate; margins with sparse reddish papillae. Primary bracts herbaceous, of variable length, usually 2.5–5.0 cm long. Inflorescence panicle composed of remotely interrupted, relatively dense, long pedunculate secondary panicles. Secondary panicles 2–4 × 1–2 cm, with lowermost often 10–15 cm below terminal one, of 3–10 spike-like dense clusters. Bracteoles scarious-membranous, 1–2 mm long, ±lanceolate, not or sparsely ciliate. Tepals subequal, entire, glabrous, lanceolate, acuminate; inner tepals 2.0–2.5 mm long; outer tepals 2.1–2.8 mm long. Stamens 6, rarely 1 or 2 rudimentary; anthers 0.6–0.8 mm long; filaments 0.3–0.4 mm long; style 0.3–0.4 mm long; stigmas 0.8–1.1 mm long. Capsules narrowly ovoid, ±acute, brown, shining, shorter than perianth; capsule segments 1.5–1.7 × 1.0–1.1 mm. Seeds oblong-ovoid, c. 0.8–1.0 mm long, 0.6–0.7 mm wide; appendage indistinct, base fibrillate.