- ≡ Uncinia filiformis Colenso ex Boott in Hooker, Bot. Antarct. Voy. II. (Fl. Nov.-Zel.) Part I, 286 (1853)
- = Uncinia rupestris var. capillacea Kük., Pflanzenr. (Engler) 38 , 64 (1909)
Slender tufts. Culms (5)–10–30 cm. long, < 0.5 mm. wide, glab.; basal bracts red-brown with paler striations. Lvs 4–6–(7) per culm, < mature culms, us. < 0.5 mm. wide, deeply channelled or flat with a distinct groove, bright green, glab. at the base, scabrid towards the long-tapering, fine tip. Spike 2–3 cm. × 2–3 mm., female fls c. 10, internodes 2–3 mm. long, sts up to 4 mm. at base of spike with distant fls. Glumes = or < utricles, deciduous, lanceolate, acute, membr. with green midrib. Utricles 3.5–4.5–(5) × c. 1 mm., trigonous, light greenish brown, lateral nerves prominent, somewhat spreading when ripe, stipe and beak c. 1 mm. long.
[From: Moore and Edgar (1970) Flora of New Zealand. Volume 2. as Uncinia filiformis Boott]