Classification
Class
Magnoliopsida Brongn.
Order
Asparagales Link
Family
Orchidaceae Juss.
Genus
Corybas Salisb.
 Nomenclature
Scientific Name:
Corybas rivularis (A.Cunn.) Rchb.f. (1871)
Synonymy:
  • ≡ Acianthus rivularis A.Cunn., Companion Bot. Mag. 2: 376 (1837)
  • ≡ Nematoceras rivulare (A.Cunn.) Hook.f., Bot. Antarct. Voy. II. (Fl. Nov.-Zel.) Part I, 251 (1853) – as rivularis
  • ≡ Corysanthes rivularis (A.Cunn.) Hook.f., Handb. New Zealand Fl. 266 (1864)
  • ≡ Nematoceras rivularis (A.Cunn.) Molloy, D.L.Jones & M.A.Clem., 13: 449 (2002) nom. illeg.
  • = Corysanthes rotundifolia var. pandurata Cheeseman, Man. New Zealand Fl., ed. 2, 366 (1925)
  • ≡ Nematoceras panduratum (Cheeseman) Molloy, D.L.Jones & M.A.Clem. in Jones et al., 13: 449 (2002) – as pandurata
Vernacular Name(s):
Dancing spider orchid
 Description

Plant at fl. to 6 cm. tall. Stem erect. Green lf to c. 4–(5) × 3 cm., often smaller, sessile, long-ovate, acuminate, cordate at base, membr., ± blotched with red, margins ± undulate. Floral bract > ovary, acuminate. Dorsal sepal to 4 cm. long, much longer than labellum, erect then almost horizontal, gradually tapering to filiform tip; lateral sepals long, filiform, greatly exceeding labellum. Petals similar to lateral sepals. Labellum auriculate at base, lamina abruptly deflexed, squarish when flattened, contracting suddenly into a narrow apiculus, margins inclined to fold downwards, finely denticulate or erose, the denticulations ornamented with short, stiff, blunt hairs; similar hairs or hair-like calli covering the inner face of the lamina and becoming more acute and retrorse towards the throat.

[From: Moore and Edgar (1970) Flora of New Zealand. Volume 2 as Corybas rivularis (A.Cunn.) Rchb.f.]

 Biostatus
Indigenous (Endemic)
 Bibliography
Cheeseman, T.F. 1925: Manual of the New Zealand Flora. Edition 2. Government Printer, Wellington.
Cunningham, A. 1837: Florae insularum Novae Zelandiae precursor; or a specimen of the botany of the islands of New Zealand. Companion to the Botanical Magazine 2: 222–233, 327–336, 358–378.
de Lange, P.J. 2002: New genera, reinstatements and combinations for New Zealand Orchidaceae (Tribe Diurideae). New Zealand Botanical Society Newsletter 68: 14–18. [as Acianthus rivularis A.Cunn.; Corysanthes rivularis (A.Cunn.) Hook.f.; Nematoceras rivulare (A.Cunn.) Hook.f.; Nematoceras rivularis (A.Cunn.) Molloy, D.L.Jones & M.A.Clem.]
de Lange, P.J.; Norton, D.A.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Hitchmough, R.; Townsend, A.J. 2009: Threatened and uncommon plants of New Zealand (2008 revision). New Zealand Journal of Botany 47: 61–96. [as Nematoceras rivulare (A.Cunn.) Hook.f.] [Data deficient]
de Lange, P.J.; Norton, D.A.; Heenan, P.B.; Courtney, S.P.; Molloy, B.P.J.; Ogle, C.C.; Rance, B.D. 2004: Threatened and uncommon plants of New Zealand. New Zealand Journal of Botany 42(1): 45–76. [as Nematoceras rivularis (A.Cunn.) Molloy, D.L.Jones & M.A.Clem.]
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. [Naturally Uncommon]
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. [Data Deficient]
Hooker, J.D. 1852–1853 ("1853"): The Botany of the Antarctic Voyage of H.M. Discovery Ships Erebus and Terror in the Years 1839–1843, under the command of Captain Sir James Clark Ross. II. Flora Novae-Zelandiae. Part I. Flowering plants. Lovell Reeve, London.
Hooker, J.D. 1864: Handbook of the New Zealand Flora: a systematic description of the native plants of New Zealand and the Chatham, Kermadec's, Lord Auckland's, Campbell's and Macquarie's Islands. Part I. Reeve, London.
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.
Parsons, M.J.; Douglass, P.; Macmillan, B.H. 1998: Current Names List for wild Gymnosperms, Dicotyledons and Monocotyledons (except Grasses) of New Zealand as used in Herbarium CHR. Version 1, to 31 Dec 1995. Manaaki Whenua Press, Lincoln, Canterbury, New Zealand.