Bulbophyllum ankylorhinon J.J.Verm., Rheedea 2 (1992) 10, fig. 5
Type: Jongejan cult. 1287 (holo L, spirit only)
Rhizome patent to pendulous, to 60 by 0.4-0.5 cm diam. Pseudobulbs ovoid to ellipsoid, 2-8 cm apart, 2.5-4 by 0.8-1 cm, somewhat flattened. Petiole 3-6 mm. Leaf blade elliptic, 6.5-18 by 1.3-2 cm, index 4.7-10; tip (sub)acute. Inflorescence c. 3 cm, 3-5-flowered; peduncle 0.7 cm. Floral bracts c. 3. the longest c. 7 mm. Rachis 0.8-1.4 cm. Floral bracts approximately triangular, 12-15 mm; tip acute. Pedicel and ovary 4.5-5 mm, with the node 0.02 cm from the floral bract. Flowers moderately opening. Median sepal ovate, 21-32 by 3.5-3.8 mm, index 5.5-7; tip acute, margins distinctly ciliate; rather thick; adaxially finely papillose except base; abaxially glabrous. Lateral,sepals free, 22-32 by 3.8-4 mm, index 5.5-7; otherwise as the median sepal. Petals 7-9 by 1.8-2.5 mm, index 3.5-5; tip obtuse, margins with coarse, elongated papillae; adaxially glabrous base, coarsely papillose-ciliate tip and finely papillose in between; otherwise as the median sepal. Lip slightly curved, general outline approximately elliptic, 2-2.5 by 1.5-2 mm, index 1.2-1.3 (not spread); tip rounded, margins with coarse, elongated papillae; very thick; adaxially without a basal concavety, without basal teeth, basal part of the lip moderately concave, slightly papillose, passing with a transversely edge or ridge into the top part of the lip, top part slightly convex, with a median furrow, papillose; abaxially without a median ridge; surface approximately glabrous. Column from ovary to the tip of the rostellum 0.1 cm; rostellum distinctly protruding; stigma a transversely slit with a distinct, obtuse, central tooth at its base. Column-foot approximately Without accessories.,Stelidia inconspicuously, triangular; tip acute. Anther abaxially with a ridge; front margin not protruding. (After Vermeulen, 1993)
Colours: Sepals and petals white or creamy yellow. Lip orange or red.
Habitat: Epiphyte in montane forest; 1740-2100 m.
Flowering time in the wild: December.
Distribution: Malesia (New Guinea).
Distribution in New Guinea: Papua New Guinea; see map 96-112M.jpg.
Cultivation: Cool growing epiphyte.