Classification
Class
Magnoliopsida Brongn.
Order
Asparagales Link
Family
Orchidaceae Juss.
Genus
Pterostylis R.Br.
 Nomenclature
Scientific Name:
Pterostylis trullifolia Hook.f., Bot. Antarct. Voy. II. (Fl. Nov.-Zel.) Part I, 249 (1853)
Synonymy:
  • ≡ Diplodium trullifolium (Hook.f.) D.L.Jones, Molloy & M.A.Clem. in Jones & Clements, 4: 72 (2002)
  • = Pterostylis rubella Colenso, Trans. & Proc. New Zealand Inst. 18: 271 (1885 [1886])
  • = Pterostylis trullifolia var. gracilis Cheeseman (1915)
  • = Pterostylis trullifolia var. rubella Hatch, Trans. & Proc. Roy. Soc. New Zealand 77 (1949)
Vernacular Name(s):
Trowel leaved orchid
 Description

Plant to c. 25 cm. tall, us. less. Stem slender, smooth, or upper internodes occ. minutely rough but not puberulous, us. green, internodes us. > lvs. Petiolate lvs in separate rosettes or at base of fl.-stem; lamina c. 5–10 × 5–10 mm., broad-ovate to orbicular-cordate, acute to subacute, veins slightly raised giving rugose surface, petiole well-defined, sts > lamina. Cauline lvs several, lowest us. petiolate and ± trulliform, those above c. 5–20 × 2–5 mm., sessile, linear-lanceolate, uppermost rarely overtopping ovary. Fl. us. solitary, erect. Dorsal sepal c. 1–1.5 cm. tall, tip acuminate, ± horizontal; lateral sepals diverging at wide angle forming U or wide W from front view, this region abruptly prominent in side view, tips long-caudate and much overtopping galea. Petals almost as long as dorsal sepal, only a narrow marginal strip exposed. Labellum narrow-triangular, arched and protruding, apex subacute. Column shorter than labellum; stigma elliptic, slightly prominent.

[From: Moore and Edgar (1970) Flora of New Zealand. Volume 2 as Pterostylis trullifolia Hook.f.]

 Biostatus
Indigenous (Endemic)
 Bibliography
Colenso, W. 1886 ("1885"): A description of some newly-discovered and rare indigenous plants: being a further contribution towards the making known the botany of New Zealand. Transactions and Proceedings of the New Zealand Institute 18: 256–287.
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. 1949: The New Zealand forms of Pterostylis R.Br. Transactions and Proceedings of the Royal Society of New Zealand 77(2): 234–246.
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.
Janes, J.K.; Duretto, M.F. 2010: A new classification for subtribe Pterostylidinae (Orchidaceae), reaffirming Pterostylis in the broad sense. Australian Systematic Botany 23: 260–269.
Jones, D.L.; Clements, M.A. 2002: A New Classification of Pterostylis R.Br. (Orchidaceae). Australian Orchid Research 4: 64–124.
Jones, D.L.; Clements, M.A.; Molloy, B.P.J 2002: A Synopsis of the Subtribe Pterostylidinae. Australian Orchid Research 4: 129–146.