Scientific Name:
Coprosma rigida Cheeseman, Trans. & Proc. New Zealand Inst. 19: 243 (1886 [1887])

Erect shrub up to 2–(5) m. tall, with stiff divaricate branches; bark reddish brown; branchlets wiry, somewhat shining. Lvs on petioles 2–3 mm. long. Stipules triangular, acute, ciliolate, with terminal denticle or not. Lamina thick, coriac., glab., obovate to oblong, rounded to subtruncate at apex, cuneately narrowed to base, ± 10–20 × 3–9 mm. Midrib and principal secondary veins evident, at least below. Fls solitary, terminal on short branchlets. ♂ without calyx; corolla broadly campanulate, lobes broad-ovate acute, = tube. ♀ with short obtuse calyx-teeth; corolla with short tube and rather long, narrow, acute lobes. Drupe orange-yellow or white, ± obovoid, c. 4–6 mm. long.

[From:  Allan (1961) Flora of New Zealand. Volume 1.]

Indigenous (Endemic)
Cheeseman, T.F. 1887 ("1886"): On the New Zealand Species of Coprosma. Transactions and Proceedings of the New Zealand Institute 19: 218–252.
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]
Kirk,T. 1899: The Students' Flora of New Zealand and the Outlying Islands. Government Printer, Wellington, N.Z.