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Didymoplexis pallens

Didymoplexis pallens

Didymoplexis pallens Griff., Calcutta J. Nat. Hist. 4 (1844) (383), fig. 17(b):1-8

Type: Griffith s.n. (India, Calcutta, Serampore) (holo CAL)

Synonyms:

  • Epiphanes pallens (Griff.) Rchb.f. in Seem., Fl. Vitiensis (1868) 296
  • Gastrodia pallens (Griff.) F.Muell., Contr. Phytog. New Hebrides (1873) 22
  • Leucorchis sylvatica Blume, Mus. Bot. Lugd. Bat. 1 (1849) 31
    - Type: Blume? (Harriang, Bantam Prov.) (holo L?)
  • Arethusa ecristata Griff., Not. Pl. Asiat. 3 (1851) 378; Icon. Pl. Asiat. pl. 343
    - Type: Griffith s.n. (Afghanistan)
  • Apetalon minutum Wight, Icon. Pl. Ind. Or. 5 (1851) 22, t. 1758
    - Type: Jerdon s.n. (Sultan's Battery, Coorg) (holo K)
  • Arethusa bengalensis Hort. ex Hemsl., J. Linn. Soc., Bot. 20 (1883) 311
    - Type: not designated
  • Cheirostylis kanarensis Blatt. & McCann, J. Bombay Nat. Hist. Soc. 35 (1932) 732, figs
    - Type: Bell s.n. (India, Bombay Pres., N. Kanara, Tatwal)

Leafless terrestrial. Flowering stem to c. 20 tall, up to 20-flowered, but only one or two flowers open at a time. Median sepal 1.2 cm long, concave. Lateral sepals connate in basal half, rounded. Petals connate to the median sepal for about 0.3 cm, the free parts 0.4 cm long, 0.55 cm wide. Lip entire, with erect side-margins which just clasp the column, in front truncate with rounded corners, 0.7 by 1.3 cm. Column strongly curved, c. 0.6 cm long. (After Comber, 2001).

Note: Differs from the other two New Guinea species of Didymoplexis by the lip being much broader than long (when flattened).


Stem pale brown. Flower pure white with a yellow spot on the front margin.

Terrestrial in forest.

Malesia (Peninsular Malaysia, Singapore, Sumatra, Java, Borneo, ?New Guinea, The Philippines), India, Australia, Vanuatu.

Papua New Guinea. See map

distribution in New Guinea

Terrestrial, probably parasitic on fungi and probably impossible to grow under normal conditions.

Not known

  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Gastrodieae
  • Genus Didymoplexis
  • Species Didymoplexis pallens
  • Smith, J.J., Icon. Bogor. 2 (1903) 5, t. 101B
  • Smith, J.J., Orchid. Java (1905) 77
  • Smith, J.J., Orchid. Java, Fig.-Atl. (1908) fig. 51
  • Dockrill, A. W., Austral. Indig. Orchids 1 (1969) 218, fig.
  • Wood, J.J., Orchadian 7 (1982) 143
  • Comber, J.B., Orchids of Sumatra (2001) 112

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Didymoplexis pallens

overview picture

Didymoplexis pallens

Didymoplexis pallens Griff., photo E.F. de Vogel, from Java, Kebun Raya Bogor

Didymoplexis pallens

Didymoplexis pallens Griff., photo E.F. de Vogel, from Java, Kebun Raya Bogor