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Bulbophyllum plicatum J.J.Verm., Orchid Monogr. 7 (1993) 169, fig. 124
Type: Reeve 1050 (holo L; iso L, LAE)
Rhizome creeping, 0.08-0.1 cm diam. Pseudobulbs ovoid, 0.2-0.5 cm apart, 0.4-0.7 by 0.2-0.3 cm, not or hardly flattened. Petiole 1-2 mm. Leaf blade elliptic, 0.8-1.4 by 0.3-0.5 cm, index 2.6-2.8; tip acute. Inflorescence 1.8-2.3 cm, 1-flowered; peduncle 1-1.5 cm. Floral bracts c. 3. the longest c. 1.8 mm Floral bracts tubular, c. 2 mm; tip acuminate. Pedicel and ovary c. 5 mm, with the node 0.1 cm from the floral bract. Flowers moderately opening. Median sepal ovate to elliptic, c. 4 by 2 mm, index c. 2; tip acute, thin, glabrous. Lateral sepals free, oblique, ovate, c. 3.7 by 2 mm, index 1.7-1.8; otherwise as the median sepal. Petals elliptic, 0.4 by 0.9 mm, index 0.4-0.5; tip truncate, thin, glabrous. Lip approximately straight, general outline ovate, c. 2 by 1.7 mm, index c. 1.2 (not spread); tip shortly acuminate, margins irregularly papillose; rather thick; surface finely papillose locally; adaxially with a distinct basal concavety, basal teeth converging, together forming a transversely ridge with a deep notch half-way, basal part of the lip concave because of the sharply upwards folded, margins which project as two points, passing with a fold into the approximately flat top part of the lip; abaxially approximately without `a median ridge. Column from ovary to the tip of the rostellum 0.1 cm; rostellum distinctly protruding; stigma orbicular, protruding at its base. Column-foot with a distinct, distinctly upwards pointing, rounded central knob above the attachment of the lip. Anther abaxially with an inconspicuously ridge; front margin somewhat protruding. Pollinia (not seen). (After Vermeulen, 1993)
Sepals whitish, yellow tip, veins somewhat pink in young flowers. Lip whitish, veins and upturned folds pinkish red.
Epiphyte in montane forest; 1800-2100 m.
Malesia (New Guinea).
Cool growing epiphyte.