Scientific Name:
Bolboschoenus caldwellii (V.J.Cook) Soják (1972)
  • Scirpus caldwellii V.J.Cook, Trans. Roy. Soc. New Zealand 76: 568 (1947)
Vernacular Name(s):
Kōpūngāwhā; Kōpūpūngāwhā; Kukuraho; Rīrīwaka

Rhizome with globose woody tubers. Stems to 90 cm high. Leaves broad. Inflorescence usually a compact head of 3–6 large spikelets with longer leaf-like bracts. Hypogynous bristles ½ length of nut. Stamens 3. Style-branches 2. Nut lenticular with concave sides.

[From: Healy and Edgar (1980) Flora of New Zealand. Volume 3 as Scirpus caldwellii V.J.Cook]

Indigenous (Non-endemic)
Cook, V.J. 1947: Descriptions of New Species of Scirpus. Transactions of the Royal Society of New Zealand 76: 567–571.
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. [Not Threatened]
Wilson, K.L. 1981: A synopsis of the genus Scirpus sens. lat. (Cyperaceae) in Australia. Telopea 2(2): 153–172.