Bulbophyllum lophoton J.J.Verm., Orchid Monogr. 7 (1993) 163, fig. 116
Type: Jongejan cult. 1369 (holo L)
Rhizome creeping, c. 2 rnm diam. P.seudobulb.s ovoid to lenticular, 1-3.5 cm apart, 0.7-1.7 by 0.9-1.2 cm, not or hardly flattened. Petiole 3-5 mm. Leaf blade elliptic to ovate, 3-5 by 1.7-2.2 cm, index 1.8-2.3; tip approximately acute. Inflorescence 4-9 cm, 1-flowered; peduncle 1.3-5.5 cm. Floral bracts c. 3. the longest 0.25-0.4 cm. Floral bracts tubular, c. 3.5 mm; tip acute. Pedicel and ovary 10-15 mm, with the node 0.2 cm from the floral bract. Flowers moderately opening. Median sepal ovate, 18-23 by 3.6-4 mm, index 4.56.2; tip long acuminate; rather thin, glabrous. Lateral sepals free, oblique, 2-2.4 by 4.3-5 mm, index 4-5.6; otherwise as the median sepal. Petals oblique, ovate to orbicular, 1-2.1 by 1 rnm, index 1-2.1; tip obtuse, thin, glabrous. Lip curved base, general outline ovate, 8.5-10.5 by 2-2.8 mm, index 3.7-4.7 (not spread); tip long acuminate, margins erose, thick; adaxially with a distinct basal concavety, basal teeth converging, not touching tip, basal part of the lip slightly concavee, with two short, rounded, converging ridges, gradually passing into the top part of the lip, top part with a distinct, approximately sharp, erose median crest; surface glabrous but coarsely vetnrcose towards the tip; abaxially approximately without a median ridge; surface somewhat wrinkled. Column from ovary to the tip of the rostellum c. 2 mm; rostellum distinctly protruding; stigma elliptic, not protruding at its base. Column-foot with a distinct, upwards pointing, rounded acute central knob above the attachment of the lip. Anther abaxially with a broad ridge; front margin not protruding. (After Vermeulen, 1993)
Colours: Sepals and petals yellowish green, with or without purple veins. Lip yellow.
Habitat: Epiphyte in montane forest; 2260 m.
Distribution: Malesia (New Guinea).
Distribution in New Guinea: Papua New Guinea; see map 96-1054M.jpg.
Cultivation: Cool growing epiphyte.