Bulbophyllum caputgnomonis J.J.Verm., Blumea 38 (1993) 154, fig. 2
Type: Jongejan cult. 3055 (holo L)
Rhizome creeping, c. 1.5 mm diam. Pseudobulbs prostrate on the rhizome, ellipsoid to obovoid, 1-1.2 cm apart, c. 1 by 0.5-0.6 cm, distinctly laterally flattened. Petiole at most 0.5 rnm. Leaf blade ovate, 1.9-2.7 by 1.3-2 cm, index 1.3-1.8, tip obtuse. Inflorescence usually single, c. 4 cm, 1-flowered. Peduncle 1.2 cm; bracts 2, the longest c. 6 mm. Floral bracts ovate, c. 6 mm, tip acute. Pedicel and ovary c. 6 mm, with the node 0.5 mm from the floral bract. Flowers opening only with a small lumen at each side of the flower, near its base, between the median sepal and the lateral sepals. Median sepal adherent to the upper margins of the lateral sepals except for a small lumen near the base of the flower, ovate, c. 18 by 12 mm, index c. 1.5, tip apiculate; margins glabrous; rather thick; adaxially glabrous; abaxially shortly pubescent. Lateral sepals connate along their lower margins from base to tip, oblique, c. 17 by 12 mm, index c. 1.4, tip subacute; otherwise as the median sepal. Petals oblique, ovate, c. 14 by 5 mm, index c. 2.8, tip obtuse; margins glabrous; rather thin; adaxially glabrous; abaxially somewhat shortly pubescent. Lip slightly curved with the top part slightly incurved, general outline obovate with a drawn-out top part, c. 7 by 3 mm, index c. 2.3 (not spread), tip subacute; margins slightly and very finely papillose c. halfway; thick; surface glabrous; adaxially distinctly concave, with a rounded median ridge, and 2 distinct, convergent ridges in the basal third, slightly concave in the middle third, slightly convex and with a median furrow in the top third; abaxially approx. without a median ridge, surface glabrous. Column from ovary to the tip of the stelidia c. 5 mm; stigma not protruding at its base, slit-like; column foot with small, triangular, obtuse lateral wings close to the attachment of the lip. Stelidia subulate, c. 2.3 mm; tip acute. Pollinia 4; the inner pair more than half as long as the outer pair. Stipes absent. (After Vermeulen, 1993)
Colours: Flowers cream-coloured, heavily mottled with purple.
Habitat: Epiphyte in montane forest; 2000-2200 m.
Distribution: Malesia (New Guinea).
Distribution in New Guinea: Papua New Guinea; see map 96-285M.jpg.
Cultivation: Cool growing epiphyte.