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Bulbophyllum macrourum

Bulbophyllum macrourum

Bulbophyllum macrourum Schltr. in K.Schum. & Lauterb., Nachtr. Fl. Deutsch. Schutzgeb. Südsee (1905) 207

Type: Schlechter 15744 (holo B, lost; iso BO); neo

Synonyms:

  • Bulbophyllum pensile Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1913) 866
    - Type: Schlechter 19895 (holo B, lost; iso AMES, BO, L)

Rhizome perpendicularly hanging down, up to 45 cm long, sometimes winged, largest diam. 0.6-1.2 mm; rhizome portion between two pseudobulbs usually with a node at 1/4 to 1/2 of its length; rhizome scales of the longest internodes distinctly shorter than those internodes, leaving bare large portions of the rhizome. Roots often all close to the base of the rhizome. Pseudobulbs approx. cylindrical, 1-5 cm apart, 0.3-0.9 by 0.1-0.3 cm, often somewhat flattened. Petiole 0.7-2 mm. Leaf blade ovate to elliptic, 1.5-5.6 by 0.82.8 cm, index 1.5-3.2, tip acuminate. Inflorescence 3.8-10 cm, 3-9-flowered. Peduncle 1.8-3.5 cm; bracts 3, the longest 4-7 mm. Rachis pendulous, 0.8-4 cm. Floral bracts ovate to triangular, 1.5-4 mm, tip acute. Pedicel and ovary 5-10 mm, with the node 1-2 mm from the floral bract. Flowers many open at the time, moderately opening. Median sepal ovate, 9-30 by 1.8-3.2 mm, index 4-10, tip long acuminate to caudate; thin; glabrous. Lateral sepals free, oblique, ovate to triangular, 12-37 by 2-4 mm, otherwise as the median sepal. Petals ovate to elliptic, 2.2-4 by 1-2 mm, index 1.9-2.5, tip obtuse to acute; thin; glabrous. Lip curved, general outline ovate to elliptic, in lateral view approx. equally high up to, or over half-way its length, 2.5-4 by 1.5-2 mm, index 1.6-2 (not spread), tip rounded; thick but soft; glabrous; adx. concave near the base, often with 2 inconspicuous ridges close to the margins approx. half-way; abx. with an inconspicuous, a retuse median ridge. Column from ovary to the tip of the stelidia 0.9-1.5 mm; stigma protruding at its base, triangular, column-foot without accessories. Stelidia inconspicuous, triangular, tip acute. Anther abx. with a ridge; front margin protruding. Pollinia 2. (After Vermeulen, 1993)


Leaves often suffused with purple. Sepals and petals pale green, yellowish or white. Lip white or cream-coloured, sometimes with a purple blotch in the centre.

Epiphyte in lower montane forest; 795-2300 m.

Malesia (New Guinea).

Papua New Guinea; see map

Distribution of Bulbophyllum macrourum in New Guinea

Intermediate growing epiphyte.

April, June, August, October, November, December.

  • Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 1 (1913) 866
  • Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 302, fig. 1159, as Bulbophyllum pensile Schltr.
  • Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 302, fig. 1158
  • Vermeulen, J.J., Orchid Monogr. 7 (1993) 105, fig. 62
  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Dendrobieae
  • Subtribe Bulbophyllinae
  • Genus Bulbophyllum
  • Section Macrouris
  • Species Bulbophyllum macrourum

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Bulbophyllum macrourum

Overview picture of Bulbophyllum macrourum Schltr.

Bulbophyllum macrourum

Bulbophyllum macrourum Schltr., flower, oblique front view, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 1294

Bulbophyllum macrourum

Bulbophyllum macrourum Schltr., flower detail, centre of flower, oblique front view, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 1294

Bulbophyllum macrourum

Bulbophyllum macrourum Schltr., flower detail, centre of flower, lateral view, lateral sepal and petal removed, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 1294

Bulbophyllum macrourum

Bulbophyllum macrourum Schltr. plant habit, photo Peter Jongejan,cultivated in village, Papua New Guinea, Eastern Highlands Prov.

Bulbophyllum macrourum

Bulbophyllum macrourum Schltr.flower, stem with inflorescences, photo E.F. de Vogel, Leiden cult. 20030125 (de Vogel et al.) from Papua New Guinea, Central Prov.

Bulbophyllum macrourum

Bulbophyllum macrourum Schltr. flowers, front view, photo E.F. de Vogel, Leiden cult. 20030125 (de Vogel et al.) from Papua New Guinea, Central Prov

Bulbophyllum macrourum

Bulbophyllum macrourum Schltr.flowers, oblique front view, photo E.F. de Vogel, Leiden cult. 20030125 (de Vogel et al.) from Papua New Guinea, Central Prov

Bulbophyllum macrourum

Bulbophyllum macrourum Schltr. flower, lateral view, photo E.F. de Vogel, Leiden cult. 20030125 (de Vogel et al.) from Papua New Guinea, Central Prov

Bulbophyllum macrourum

Bulbophyllum macrourum Schltr. centre of flower, front view, photo E.F. de Vogel, Leiden cult. 20030125 (de Vogel et al.) from Papua New Guinea, Central Prov

Bulbophyllum macrourum

Bulbophyllum macrourum Schltr. centre of flower, oblique lateral view, photo E.F. de Vogel, Leiden cult. 20030125 (de Vogel et al.) from Papua New Guinea, Central Prov

Bulbophyllum macrourum

Bulbophyllum macrourum Schltr., Orchid Monogr. 7 (1993) 105, fig. 62, J.J. Vermeulen, drawing, plant habit and flower analysis, based on Jongejan 1295 (L)

Bulbophyllum macrourum

Bulbophyllum macrourum Schltr., floral analysis, R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 302, fig. 1158

Bulbophyllum macrourum

Bulbophyllum macrourum as Bulbophyllum pensile Schltr., floral analysis, R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 302, fig. 1159

Bulbophyllum macrourum

Bulbophyllum macrourum as Bulbophyllum macrourum Schltr., herbarium sheet, isoneotype specimen, Schlechter 17016 (isoneotype specimen BO)

Bulbophyllum macrourum

Bulbophyllum macrourum as Bulbophyllum pensile Schltr., herbarium sheet, Schlechter 19895 (isotype specimen BO)