Prev Taxon: Genus Pseudovanilla

Current Genus: Genus Pterostylis

Next Taxon: Genus Renanthera


Prev Species: Pterostylis caulescens


Pterostylis papuana

Pterostylis papuana

Pterostylis papuana Rolfe, Bull. Misc. Inform. Kew (1899) 112

Type: Giulianetti s.n. (New Guinea, Mt. Scratchley, 12200 ft) (holo K)

Synonyms:

  • Pterostylis papuana Rolfe var. arfakensis J.J.Sm. in L.S.Gibbs, Phytogeogr. Fl. Arfak Mts. (1917) 107
    - Type: Gibbs 5713 (syn BM; iso BO); 5890 (syn BM; iso BO)
  • Pterostylis arfakensis (J.J.Sm.) D.L.Jones & M.A.Clem., Austral. Orchid Res. 4 (2002) 65
  • Pterostylis braemii H.Mohr, Schlechteriana 1 (1990) 21, fig., phot.
    - Type: Schlechter Institut (Braem) 871105/1 (holo SCHLE)
  • Pterostylis novoguineensis Ridl., Trans. Linn. Soc. London, Bot. 9 (1916) 208
    - Type: Kloss s.n. (Camp 11 to 12, 8300 to 11000 ft.) (holo BM)

Plant slender, c. 18 cm high. Leaves basal, petiolate, ovate-oblong, subacute, 2.5-3 by 1.1-1.4 cm; petiole 1.3-2 cm long. Peduncle-scales sessile, lanceolate, acute, concave, 2.2-2.7 long, 0.45-0.7 cm wide. Floral bract lanceolate, acute, concave, 2.2-2.5 cm long. Flower solitary. Median sepal oblong-lanceolate, acuminate, incurved, c. 5 cm long. Lateral sepals at the base lanceolate, 2.5 cm long, at the apex caudate-acuminate, 1.5-1.8 cm long. Petals falcate-lanceolate, acute, 2.5 cm long. Lip narrowly lanceolate, acuminate, 2-2.2 cm long; appendix hook-like bent inwards, 0.45 cm long, at the apex brush-like. Column 2.2 cm long; wings axe-shaped, on the apical side extended into a filiformm tooth, at the base produced into an oblong lobe.
(After Rolfe, 1899)


Flower pale green and white suffused with red-brown.

Terrestrial in montane forest and subalpine shrubland, also in more open vegetation and sometimes epiphytic on mossy tree ferns, growing close to the crowns; 760 to 3470 m.

Malesia (Moluccas, New Guinea), ?Solomon Islands (Bougainville).

Papua (Indonesia); Papua New Guinea. See map

distribution map

Cool growing terrestrial, requires shaded to fairly bright position.

Flowering observed in every month of the year.

  • Smith, J.J., Nova Guinea 12, 3 (1915) 185, t. 61, fig. 99
  • Royen, P. van, Alp. Fl. New Guinea 2 (1979) 92, pl. 84
  • Family Orchidaceae
  • Subfamily Orchidoideae
  • Tribe Cranichideae
  • Subtribe Pterostylidinae
  • Genus Pterostylis
  • Species Pterostylis papuana

This is a variable entity displaying a broad ecological amplitude; possibly we are dealing with a species complex.


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Pterostylis papuana

overview picture

Pterostylis papuana

Pterostylis papuana Rolfe, plant habit, photo E.F. de Vogel, based on Stocker cult.

Pterostylis papuana

Pterostylis papuana Rolfe, flower, lateral view, photo E.F. de Vogel, based on Stocker cult.

Pterostylis papuana

Pterostylis papuana Rolfe, flower, lateral view, photo E.F. de Vogel, based on Stocker cult.

Pterostylis papuana

Pterostylis papuana Rolfe, flower, lateral view, photo E.F. de Vogel, based on Stocker cult.

Pterostylis papuana

Pterostylis papuana Rolfe, flower, view from below, photo E.F. de Vogel, based on Stocker cult.

Pterostylis papuana

Pterostylis papuana Rolfe, flower, lateral view, slightly from below, photo E.F. de Vogel, based on Stocker cult.

Pterostylis papuana

Pterostylis papuana Rolfe, flower, photo A. Schuiteman

Pterostylis papuana

Pterostylis papuana Rolfe, flower detail (flower cut open), photo A. Schuiteman

Pterostylis papuana

Pterostylis papuana Rolfe, in situ, photo N.E.G. Cruttwell (10/59, PNG, Milne Bay Prov., Mt. Duau)

Pterostylis papuana

Pterostylis papuana Rolfe, flower, photo W. Baker, based on Baker 900, from Papua (Indonesia), Mt. Jaya

Pterostylis papuana

Pterostylis papuana Rolfe, lateral sepals and petal, drawing J.J. Smith, from Pulle (Versteeg) 2405

Pterostylis papuana

Pterostylis papuana Rolfe, floral analysis, drawing J.J. Smith, from Pulle (Versteeg) 2405

Pterostylis papuana

Pterostylis papuana Rolfe var. arfakensis J.J.Sm., lip and column, drawing J.J. Smith, from Gibbs 5713

Pterostylis papuana

Pterostylis papuana Rolfe var. arfakensis J.J.Sm., floral analysis, drawing J.J. Smith, from Gibbs 5713

Pterostylis papuana

Pterostylis papuana Rolfe, herbarium sheet, Giulianetti s.n. (holotype specimen K), photo copyright the Board of Trustees of the Royal Botanic Gardens, Kew

Pterostylis papuana

Pterostylis papuana Rolfe, detail of herbarium sheet, Giulianetti s.n. (holotype specimen K), photo copyright the Board of Trustees of the Royal Botanic Gardens, Kew