T: Brazil, Rio Grande do Sul, Fazenda Englert pr. Francisco de Paula, 2 Jan 1955, B.Rambo 56439; holo: PACA; iso: LIL.
Perennials, 20–80 (–110) cm long, densely caespitose; rhizome very short-noded, 2–5 mm diam. Stem leafless, terete, 0.6–1.5 mm diam., rigid, with 12–20 inconspicuous ridges; subepidermal sclerenchyma strands present, ±triangular in transect. Pith dense, continuous, parenchymatous of rounded cells, with some vascular bundles located up to halfway into the stem transect. Cataphylls 3–5; middle cataphylls ±lax; upper cataphylls tighter, 4–12 cm long, with awn-like up to 10 mm blade, stramineous above, shining castaneous-brown below. Inflorescence pseudolateral, dense, head-like or rarely of several pedunculate heads; flowers 10–40, congested in 2–4 confluent cymes per head, erect; first bract 2–7 cm long, much exceeding or rarely equalling the inflorescence, sharply pointed. Bracteoles 1.5–2 mm long, broadly ovate, obtuse to acute, castaneous-coloured to scarious. Outer tepals 3.5–4.5 mm long, slightly exceeding inner ones, all lanceolate, acute or inner tepals subobtuse, castaneous-coloured with greenish central band, becoming stramineous. Stamens 6; anthers 0.5–0.8 mm long, shorter than c. 1.0 mm filaments; style to 0.1 mm long; stigmas to 0.5 mm long, recurved. Capsule 2.5–3.5 × 1.5–2.2 mm, about equalling tepals, round to trigonous, ovoid to obovoid, obtuse and without mucro, shining castaneous-coloured with ±lighter base. Seeds 0.4–0.6 × c. 0.2 mm, ±obliquely ellipsoid, reticulate, pale castaneous-brown, with persistent seedcoat forming one or two inconspicuous appendages.