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Octarrhena angraecoides

Octarrhena angraecoides

Octarrhena angraecoides (Schltr.) Schltr., Repert. Spec. Nov. Regni Veg. 9 (1911) 217

Synonyms:

  • Phreatia angraecoides Schltr. in K.Schum. & Lauterb., Nachtr. Fl. Deutsch. Schutzgeb. Südsee (1905) 185
    - Type: Schlechter 14502 (holo B, lost)
  • Oberonia condensata Ridl., J. Linn. Soc., Bot. 38 (1908) 322
    - Type: Robinson & Wray 5487 (holo BM)
  • Octarrhena condensata (Ridl.) Holttum, Gard. Bull. Singapore 11 (1947) 285
  • Octarrhena arfakensis J.J.Sm., Repert. Spec. Nov. Regni Veg. 12 (1913) 25
    - Type: Gjellerup 1118 (syn BO; iso L); 1210 (syn BO; iso L)
  • Octarrhena flava Carr, J. Malayan Branch Roy. Asiat. Soc. 11 (1933) 97, pl. 12, fig. A
    - Type: Carr 2119 (holo SING)

Basionym: Phreatia angraecoides

Epiphytic, erect, or ascending, several-stemmed; roots filiform, elongated, flexuose glabrous. Stems unbranched, erect or ascending, rooting at the base, elongated, up to 20 cm long, entirely covered with tightly clasping leaf-sheaths. Leaves erect-patent, linear-falcate, acuminate, glabrous, equitant, rather thick-textured, 2-2.8 cm long, up to 0.4 [‘4’] cm wide. Inflorescence axillary, cylindrical, densely many-flowered, up to 4 cm long, 0.4 cm diam. [across the flowers], surpassing the leaves; peduncle short, with several acuminate, glabrous, scales. Floral bracts lanceolate, acuminate, almost as long as the shortly pedicellate, ovary. Flowers subpatent. Median sepal lanceolate-oblong, obtuse, almost 0.1 cm long. Lateral sepals oblique ovate, acuminate, glabrous, as long as the median sepal. Petals patent obliquely lanceolate, acuminate, a little shorter than the sepals. Lip narrowly oblong-ligulate obtuse, almost as long as the petals. Column short, foot very short; clinandrium very low; rostellum notched in front. Anther rhomboid, rostrate-acuminate, in front slightly notched; pollinia 8, obliquely clavate; stipe linear, somewhat narrowed towards the viscidium, a little longer than the pollinia. Ovary shortly pedicellate, , clavate, glabrous, almost 0.2 cm long. (After Schlechter, 1905)


Flowers yellowish green.

Epiphyte in montane forest; 800 to 2500 m.

Malesia (Peninsular Malaysia, Sumatra, Java, Borneo, New Guinea), Solomon Islands, Vanuatu.

Papua (Indonesia); Papua New Guinea. See map

distribution in New Guinea

Intermediate to cool growing epiphyte.

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

  • Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 1 (1913) 904
  • Smith, J.J., Nova Guinea 12, 4 (1916) 441, t. 169, fig. 317, as Octarrhena arfakensis J.J.Sm.
  • Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 316, fig. 1215
  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Podochileae
  • Subtribe Thelasiinae
  • Genus Octarrhena
  • Species Octarrhena angraecoides

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Octarrhena angraecoides

overview picture

Octarrhena angraecoides

Octarrhena angraecoides (Schltr.) Schltr., inflorescence, photo E.F. de Vogel, Woitape lodge collection, PNG

Octarrhena angraecoides

Octarrhena angraecoides (Schltr.) Schltr., plant habit, photo E.F. de Vogel, Woitape lodge collection, PNG

Octarrhena angraecoides

Octarrhena angraecoides (Schltr.) Schltr., plant habit, photo E.F. de Vogel, Woitape lodge collection, PNG

Octarrhena angraecoides

Octarrhena angraecoides (Schltr.) Schltr., flowers, photo J.B. Comber, Royal Botanic Gardens Kew cult., from PNG

Octarrhena angraecoides

Octarrhena angraecoides (Schltr.) Schltr., habit, photo P.J. Cribb, from Papua (Indonesia), Pass Valley

Octarrhena angraecoides

Octarrhena angraecoides (Schltr.) Schltr., drawing R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 316, fig. 1215

Octarrhena angraecoides

Octarrhena arfakensis J.J.Sm., floral analysis, drawing J.J. Smith, based on Doorman 37

Octarrhena angraecoides

Octarrhena arfakensis J.J.Sm., floral analysis, drawing J.J. Smith, based on Gjellerup 1118

Octarrhena angraecoides

Octarrhena arfakensis J.J.Sm., herbarium sheet, Gjellerup 1210 (syntype specimen BO)

Octarrhena angraecoides

Octarrhena arfakensis J.J.Sm., herbarium sheet, Gjellerup 1118 (syntype specimen BO)

Octarrhena angraecoides

Octarrhena arfakensis J.J.Sm., herbarium sheet, Gjellerup 1118 (isosyntype specimen L)

Octarrhena angraecoides

Octarrhena arfakensis J.J.Sm., herbarium sheet, Gjellerup 1210 (isosyntype specimen L)