Scientific Name:
Corybas orbiculatus (Colenso) L.B.Moore in Moore & Edgar, Fl. N. Zeal. 2, 118 (1970)
  • Corysanthes orbiculata Colenso, Trans. & Proc. New Zealand Inst. 23: 389 (1891)
  • Nematoceras orbiculatum (Colenso) Molloy, D.L.Jones & M.A.Clem. in Jones et al., 13: 449 (2002) – as orbiculata

Plant at fl. to c. 4 cm. tall. Green lf c. 2–3 × 1.5–2.5 cm., sessile or with petiole much shorter than lamina, long-oval to almost orbicular, apiculate, rounded to narrowly cordate at base, inclined to be fleshy and silvery abaxially. Floral bract < ovary, narrow. Dorsal sepal little longer than labellum, lanceolate-acuminate, erect then arched forwards, downwards, or upwards; lateral sepals long, filiform, greatly exceeding labellum. Petals similar to lateral sepals and us. almost as long. Labellum auriculate at base, lamina abruptly deflexed, broadly expanded, us. tapering to the apiculus, margin minutely denticulate, inner surface papillose.

[From: Moore and Edgar (1970) Flora of New Zealand. Volume 2 as Corybas orbiculatus (Colenso) L.B.Moore]

Indigenous (Endemic)
Colenso, W. 1891: A Description of some newly discovered indigenous plants, being a further contribution towards making known the botany of New Zealand. Transactions and Proceedings of the New Zealand Institute 23: 381–391.
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]
Jones, D.L.; Clements, M.A.; Sharma, I.K.; Mackenzie, A.M.; Molloy, B.J.P. 2002: Nomenclatural notes arising from studies into the tribe Diurideae (Orchidaceae). The Orchadian 13(10): 437–468.
Lehnebach, C.A. 2016: New combinations and a replacement name for three New Zealand spider orchids (Corybas). The New Zealand Native Orchid Journal 139: 4–5.
Lehnebach, C.A.; Zeller, A.J.; Frericks, J.; Ritchie, P. 2016: Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270(1): 1–24.