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Octarrhena angustifolia

Octarrhena angustifolia

Octarrhena angustifolia (Schltr.) Schuit., Blumea 48 (2003) 511

Type: Schlechter 14009 (holo B, lost; iso K)

Synonyms:

  • Chitonanthera angustifolia Schltr. in K.Schum. & Lauterb., Nachtr. Fl. Deutsch. Schutzgeb. Südsee (1905) 194
    - Type: Schlechter 14009 (holo B, lost; iso K)
  • Chitonanthera vinosa J.J.Sm., Bot. Jahrb. Syst. 66 (1934) 208
    - Type: Mayr 380 (holo L; iso BO)

Epiphytic, spreading to pendent, small, several-stemmed, to 15 cm high. Roots filiform, elongated, flexuose, glabrous. Stems flexuose, leafy, covered by the ancipitous leaf-sheaths. Leaves linear-falcate, acuminate, suberect to erect-patent, equitant, articulated, somewhat fleshy, 1-1.5 cm long, near the middle 0.1-0.15 cm wide, glabrous. Inflorescences very small, arising from the leaf axils, laxly 2- to 4-flowered, much shorter than the leaves. Floral bracts minute, shorter than the ovary. Flowers erect-patent, c. 0.4 cm diam. Sepals ovate, obtuse, patent, glabrous, almost 0.2 cm long. Lateral sepals somewhat oblique. Petals minute, much smaller than the sepals, obliquely obovate-spathulate, obtuse, densely papillose. Lip spreading, oblong-ligulate, obtuse, densely papillose, a little shorter than the sepals. Column terete, swollen at the base, densely papillose; clinandrium large, dorsally bifid, glabrous. Anther minute, in front shallowly notched. Ovary cylindrical, glabrous, almost 0.2 cm long.
(After Schlechter, 1905 and Schlechter 1911-1914)


Flowers orange-red with somewhat darker petals and lip.

Epiphyte in montane forest, growing in shaded positions, forming large clumps; 1500 to 2060 m.

Malesia (New Guinea, endemic).

Papua (Indonesia); Papua New Guinea. See map

distribution in New Guinea

Cool growing epiphyte, requires shaded position.

January, April, July, September, October, November.

  • Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 1 (1913) 899, as Chitonanthera angustifolia Schltr.
  • Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 313, fig. 1205, as Chitonanthera angustifolia Schltr.
  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Podochileae
  • Subtribe Thelasiinae
  • Genus Octarrhena
  • Species Octarrhena angustifolia

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Octarrhena angustifolia

overview picture

Octarrhena angustifolia

Chitonanthera angustifolia Schltr., drawing R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 313, fig. 1205

Octarrhena angustifolia

Chitonanthera vinosa J.J.Sm., floral analysis, drawing J.J. Smith, based on Mayr 380

Octarrhena angustifolia

Chitonanthera angustifolia Schltr., herbarium sheet, Schlechter 14009 (isotype specimen K), photo copyright the Board of Trustees of the Royal Botanic Gardens, Kew

Octarrhena angustifolia

Chitonanthera angustifolia Schltr., detail of herbarium sheet, Schlechter 14009 (isotype specimen K), photo copyright the Board of Trustees of the Royal Botanic Gardens, Kew

Octarrhena angustifolia

Chitonanthera vinosa J.J.Sm., herbarium sheet, paratype specimen, Lam 1608 (paratype specimen BO)

Octarrhena angustifolia

Chitonanthera vinosa J.J.Sm., herbarium sheet, Mayr 380 (holotype specimen L)