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Crepidium keysseri

Crepidium keysseri

Crepidium keysseri (Mansf.) Schuit. & de Vogel Malesian Orchid J. 9 (2011) 6

Type: Type: Keysser 75 (holo B, lost)


  • Microstylis keysseri Mansf., Bot. Jahrb. Syst. 62 (1929) 463
  • Malaxis keysseri (Mansf.) W.Kittr., Bot. Mus. Leafl. 30 (1984, publ. 1985) 96

Erect, 60 cm high. Roots filiform, flexuose, puberulous. Stem short, 3-leaved, up to 6 cm long. Leaves erect-patent, petiolate; blade 5-18 by 3-5.5 cm, elliptic or ovate-elliptic, acuminate, at the base narrowed into the petiole or somewhat rounded; petiole broad, 5 cm long, at the base dilated into a sheath. Inflorescence straight, erect, glabrous, c. 50 cm long, almost up to the base laxly many-flowered. Floral bracts narrowly lanceolate or subulate, 0.3-0.4 by 0.06 cm, reflexed. Flowers 0.6 cm across, patent. Median sepal oblong, obtuse, 0.48 by 0.1 cm. Lateral sepals obliquely oblong, as long as the median sepal but a little wider. Petals linear-oblong, obtuse, 0.48 by 0.03 cm. Lip erect, in outline sagittate, auriculate, 0.7 by 0.4 cm, basal pit triangular with puberulous swollen margins, lip-margins near the apex c. 5-dentate, apex produced into a triangular-ovate lobule; basal auricles triangular, acute, apical margins irregularly erose. Column c. 0.1 cm long. Ovary glabrous, including the pedicel 0.4 cm long. (After Mansfeld, 1929, as Microstylis keysseri)

Not recorded.

Probably terrestrial in upper montane forest; 3000 m.

Malesia (New Guinea, endemic).

Papua New Guinea. See map

distribution in New Guinea

Probably cool growing terrestrial, keep in shaded position.

Not recorded.

  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Malaxideae
  • Genus Crepidium
  • Section Crepidium
  • Species Crepidium keysseri

The stated altitude may be incorrect, as many of Keysser's collections apparently were routinely labelled as having been found at 3000 m even though they must have come from much lower elevations.

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Crepidium keysseri

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