Bulbophyllum pachytelos Schltr. in K.Schum. & Lauterb., Nachtr. Fl. Deutsch. Schutzgeb. Südsee (1905) 213
Type: Schlechter 15742 (holo B, lost); neo: Carr 10461 (L; isoneo AMES 2x, BM, CANB, K, LAE, NY)
Rhizome patent to pendulous, up to 40 cm long, 1-1.5 mm diam. Pseudobulbs (ob)- ovoid to ellipsoid, 0.8-2.5 cm apart, 0.3-1 by 0.15-0.5 cm, not to distinctly flattened. Petiole 0.5-1 mm. Leaf blade ovate to elliptic, 1-3.5 by 0.2-0.8 cm, index 2.3-6, tip acute to acuminate. Inflorescence 0.7-0.9 cm, 1-flowered. Peduncle 0.15-0.3 cm; bracts 1, 1.8-3 mm. Floral bracts tubular, 1.2-3.2 mm, tip acute. Pedicel and ovary 0.9-1.6 mm, with the node up to 0.5 mm from the floral bract. Flowers moderately to widely opening. Median sepal ovate to elliptic, 2-5 by 0.8-1.8 mm, index 2.4-3.8, tip acuminate; thin; glabrous. Lateral sepals free, ovate, 2-5.5 by 0.8-2 mm, index 2.5-5.5; otherwise as the median sepal. Petals elliptic to (ob)ovate, 1.5-2.3 by 0.3-1 mm, index 2-5, tip obtuse to acute; thin; glabrous. Lip curved, general outline ovate to elliptic, 1-2 by 0.6-1.4 mm, index 1.3-2.3 (not spread), tip rounded to acute; rather thin; glabrous; adx. with a basal concavity, basal teeth converging, together forming a transverse ridge with a notch half-way, basal part of the lip concave, gradually passing into the flat or convex top part of the lip; abx. with an inconspicuous, truncate median ridge. Column from ovary to the tip of the stelidia 0.1-1 mm; rostellum distinctly protruding; stigma approx. orbicular, not or slightly protruding at its base; column-foot with a rounded central knob above the attachment of the lip. Stelidia triangular, tip obtuse to acute. Anther abx. with a ridge towards its base; front margin protruding. (After Vermeulen, 1993)
Colours: Sepals and petals white to pale yellow. Lip pale yellow to orange.
Habitat: Epiphyte in lower montane forest; 0-3080 m.
Flowering time in the wild: January, February, March, May, June, July, August, September, October, November, December.
Distribution: Malesia (New Guinea).
Distribution in New Guinea: Papua New Guinea; see map 96-1343M.jpg.
Cultivation: Intermediate growing epiphyte.