Scientific Name:
Carex hamlinii K.A.Ford in Global Carex Group, Bot. J. Linn. Soc. 179: 32 (2015)
  • = Uncinia astonii Hamlin, 19: 64 (1959)
The epithet of the species is adopted to recognize Bruce G. Hamlin (1929–1976) and his important contributions to the flora of New Zealand, where this species is found.

Densely caespitose. Culms 20–35–(60) cm. long, < 0.5 mm. diam., glab.; basal bracts light brown. Lvs 3–6 per culm, = or < culms, 1–2 mm. wide, light yellow-green or rarely red, occ. involute, rather wiry, margins finely scabrid. Spikes (4)–6–10 cm. × 3–5 mm., occ. bracteate, female fls c. 10–20, distant in lower third of spike with internodes to 9 mm. long, more crowded above with internodes 2–5 mm. long. Glumes us. = but occ. < or > utricles, deciduous, lanceolate, acute, hyaline, light brown throughout. Utricles (5.5)–6–7 × c. 1 mm., plano-convex or subtrigonous, elliptic-lanceolate, grey-green, membr., nerved, erect or spreading when ripe, distinctly contracted below to a stipe slightly < 1.5 mm. long, gradually tapered above to a beak 1.5–2 mm. long.

[From:  Moore and Edgar (1970) Flora of New Zealand. Volume 2. as Uncinia astonii Hamlin]

Indigenous (Endemic)
de Lange, P.J.; Rolfe, J.R.; Barkla J.W.; Courtney, S.P.; Champion, P.D.; Perrie, L.R.; Beadel, S.N.; Ford, K.A.; Breitwieser, I.; Schönberger, I.; Hindmarsh-Walls, R.; Heenan, P.B.; Ladley, K. 2018: Conservation status of New Zealand indigenous vascular plants, 2017. New Zealand Threat Classification Series. No. 22. [Not Threatened]
de Lange, P.J.; Rolfe, J.R.; Champion, P.D.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Norton, D.A.; Hitchmough, R.A. 2013: Conservation status of New Zealand indigenous vascular plants, 2012. New Zealand Threat Classification Series 3. Department of Conservation, Wellington. [as Uncinia astonii Hamlin] [Not Threatened]
Global Carex Group 2015: Making Carex monophyletic (Cyperaceae, tribe Cariceae): a new broader circumscription. Botanical Journal of the Linnean Society 179: 1–42.
Hamlin, B.G. 1959: A Revision of the Genus Uncinia (Cyperaceae Caricoideae) in New Zealand. Dominion Museum Bulletin 19: 1–106.