T: Tasmania, Arthur.s Lake, 17 Jan 1845, R.C.Gunn 1414; holo: P; iso: BM, C, HO, K, P, S, WU [the holotype collection in P lacks locality details and the collection number].
Perennials, c. 2–10 cm tall, slender, loosely caespitose; rhizome thin, c. 0.2–0.3 mm in diam., creeping-ascending, long-noded, gradually changing into stem, with distal ascending extravaginal shoots. Stem ascending, filiform. Leaves setaceous, numerous, ±evenly distributed along the most distal part of rhizome and lower 3/4 of stem, ±exceeding stem, terete, unitubular, perfectly septate with septa ±visible externally, 0.2–0.7 mm in diam., to 16 cm long; sheaths ±tight; auricles oblong, obtuse, 0.5–0.8 mm long. Lower bract setaceous, 0.4–5 (–15) cm long, usually equalling to much exceeding inflorescence. Inflorescence few-flowered, of 1–4 (–6) obconical (1–) 2–6 (–10)-flowered heads 2–4 mm wide, usually one sessile and one on thin peduncle to 3.5 cm long. Capitulum bracts 2 (–3), ovate-lanceolate, acute, membranous to pale stramineous, to c. 2 mm long. Tepals ±equal, linear-lanceolate, (1.7–) 2.0–3.3 mm long with distinct membranous margins; outer tepals acuminate; inner tepals with subobtuse tip, sometimes cucullate, 3-veined proximally, green to pale green, with apex and margins often ±reddish. Stamens 6, shorter than tepals or slightly longer; anthers 0.4–0.7 mm long; filaments c. 1.0–1.5 mm long; style c. 0.2–0.7 mm long; stigmas 1.0–2.5 mm long. Capsule narrowly trigonous-ellipsoid (subprismatic) to narrow-ovoid, ±unilocular, c. 2.8–4.3 mm long, gradually narrowing in a long rostrum, pale castaneous, usually much longer than perianth. Seeds ±ellipsoid, 0.4 × 0.25 mm, apiculate; inner seed coat regularly reticulate, with surface of fields minutely tuberculate; outer seed coat tight, transversally reticulate; appendages absent.