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Bulbophyllum phormion

Bulbophyllum phormion

Bulbophyllum phormion J.J.Verm., Rheedea 2 (1992) 3, fig. 2

Type: Cruttwell 3180 (holo L, alc.)

Rhizome creeping but sometimes with the most recently de or oped parts patent or pendulous, 0.08-0.1 cm diam. Rhizome scales of the longest internodes (distinctly) shorter than those internodes, leaving bare large portions of the rhizome. Roots in tufts below most pseudobulbs. Pseudobulbs ovoid to approximately discoid, 0.5-3.2 cm apart, 0.2-1.1 by 0.10.6 cm, not or hardly flattened. Petiole 1-15 mm. Leaf blade approximately elliptic, 0.7-4 by 0.25-0.8 cm, index 1.6-10; tip obtuse to acute. Inflorescence 2-17 cm, 2-10-flowered; peduncle 1.7-9.5 cm. Floral bracts 3-5. the longest 2-6 mm. Rachis erect, 0.3-6 cm. Floral bracts ovate to triangular, 1.2-3 mm; tip acute. Pedicel and ovary 2-13 mm, with the node 0.03-0.08 cm from the floral bract. Flowers all open time, moderately opening. Median sepal ovate to triangular, 4-11 by 1.2-2.5 mm, index 3-9; tip long acuminate; rather thin, glabrous. Lateral sepals free, 4-15 by 1.4-2.5 mm, index 2.6-10. otherwise as the median sepal. Petals oblique, elliptic to obovate, 1.2-3.5 by 0.5-1 mm, index 23.9; tip obtuse to acute, margins glabrous to erose, thin; surface glabrous. Lip straight or slightly curved, general outline ovate, more or less divided into a basal part which is semicircular or semi-elliptic in lateral view and which cannot be spread out entirely, and a narrow, flat or slightly convex top part, 1.8-3 by 0.5-0.8 mm, index 2.3-4.2 (not spread); tip obtuse to acute; rather thin and solid; approximately glabrous; adaxially slightly concave below, with 2 inconspicuously ridges converging in front approximately half-way; abaxially approximately without a median ridge. Column from ovary to the tip of the stelidia 0.5-1 mm; stigma protruding at its base, approximately elliptic. Column-foot without accessories. Stelidia inconspicuously, triangular; tip rounded to acute; upper margin erose. Anther abaxially with a ridge; front margin not protruding. Pollinia 2. (After Vermeulen, 1993)

Pseudobulbs often stained with purple. Sepals and petals yellowish or creamy white, sometimes suffused with pink or purple, or entirely purple. Lip yellowish or white, sometimes with a purple blotch near the base, or entirely dark purple.

Epiphyte in montane forest; 0-2820 m.

Malesia (New Guinea).

Papua (Indonesia); Papua New Guinea; see map

Distribution of Bulbophyllum phormion in New Guinea

Cool growing epiphyte.

January, February, September, October, November.

  • Vermeulen, J.J., Orchid Monogr. 7 (1993) 113, fig. 69
  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Dendrobieae
  • Subtribe Bulbophyllinae
  • Genus Bulbophyllum
  • Section Macrouris
  • Species Bulbophyllum phormion

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Bulbophyllum phormion

Bulbophyllum phormion J.J.Verm., Rheedea 2 (1992) 3, fig. 2, J.J. Vermeulen, drawing, plant habit and flower analysis, based on a Brass 11304 (); b-i Cruttwell 3180 (holo L, alc.)

Bulbophyllum phormion

Bulbophyllum phormion J.J.Verm., Rheedea 2 (1992) 3, fig. 2, J.J. Vermeulen, part of drawing, rearranged