Classification
Class
Magnoliopsida Brongn.
Order
Asparagales Link
Family
Orchidaceae Juss.
Genus
Acianthus R.Br.
 Nomenclature
Scientific Name:
Acianthus sinclairii Hook.f., Bot. Antarct. Voy. II. (Fl. Nov.-Zel.) Part I, 245 (1853)
Synonymy:
  • ≡ Acianthus fornicatus var. sinclairii (Hook.f.) Hatch, Trans. Roy. Soc. New Zealand 75: 369 (1945)
 Description

Plant at fl. c. 2–10 cm. tall, elongating later. Stem erect, slender. Green lf sessile, us. ¼ to ½ way up stem, c. 1–3 cm. long, ovate, acuminate, strongly cordate at base. Raceme to 5 cm. long, us. less; floral bracts often green, foliaceous, ovate, sts small and membr. Fls 1–5–(10); per. c. 6–8 mm. long, ± erect, greenish with dull red on labellum. Sepals shortly and abruptly caudate; dorsal broadly lanceolate to ovate, concave, arched over column; lateral similar in length, linear-lanceolate. Petals shorter, lanceolate, acuminate. Labellum shorter than sepals, broad-ovate; tip acute and ± recurved, sts coarsely papillose; proximal part deeply concave; 2 rounded calli at base. Column shorter than labellum, without wings. Pollinia globose, 4 in each anther cell, breaking, if at all, into tetrads of grains.

[From: Moore and Edgar (1970) Flora of New Zealand. Volume 2 as Acianthus fornicatus var. sinclairii (Hook.f.) Hatch]

 Biostatus
Indigenous (Endemic)
 Bibliography
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]
Hatch, E.D. 1945: Notes on New Zealand Orchids. Transactions of the Royal Society of New Zealand 75: 367–370.
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.
Kores, P.J. 1995a: A systematic study of the genus Acianthus (Orchidaceae: Diurideae). Allertonia 7(3): 87–220.
Kores, P.J. 1995b: A systematic study of the genus Acianthus (Orchidaceae: Diurideae). Allertonia 7: 87–220.