Perennials usually 10–35 cm tall, densely hairy caespitose; base often purplish, robust; rhizome short; stolons absent. Stem rigidly erect, (0.6–) 0.8–1.2 mm in diam. below inflorescenceBasal leaves densely ciliate, numerous, 8–15 (–18) cm long, 4–5 (–6) mm wide; cauline leaves unevenly distributed, usually with one near stem base and 1 or 2 close to inflorescence, 6–10 cm long, often overtopping inflorescence; all leaves acute, with margins papillose-serrulate. Lower bract herbaceous, c. 2–5 cm long, usually overtopping inflorescence; upper bracts scarious-brownish, fimbriate-ciliate, up to 2 cm long. Inflorescence erect, densely congested, c. 1.5–2.5 cm long, of whitish villose appearance when younger, rarely with a small separate flower cluster at base. Bracteoles inserted c. 0.5–1.0 mm below flower; upper bracteoles narrowly lanceolate with a filiform tip, c. 3.0–3.5 mm long (often as long as flowers), densely fimbriate–ciliate. Tepals subentire, with outer ones densely and inner ones usually very sparsely long ciliate, narrowly lanceolate, acuminate with filiform tip, ±unequal (inner tepals 2.5–2.9 mm long, outer tepals 2.9–3.7 mm long), purplish castaneous brown to straw brown at base, with broad membranous border. Stamens 6; anthers 0.4–0.7 mm long; filaments 0.5–0.9 mm long, longer than anthers; style 0.1–0.2 mm long; stigmas c. 1.0 mm long. Capsule oblong-ovoid, ±trigonous above, ±acute, castaneous brown, shorter than perianth; capsule segments 1.8–2.0 × 1.3–1.4 mm. Seeds ellipsoidal, with distinct yellowish seed-coat and yellowish apex, dark castaneous, 0.9–1.0 mm long, 0.5–0.6 mm wide; appendage yellowish, 0.1–0.2 mm, fibrillate. 2n=24, fide D.M.Moore, Fl. Tierra del Fuego 325 (1993).