Bulbophyllum intersitum

Bulbophyllum intersitum J.J.Verm., Orchid Monogr. 7 (1993) 161, fig. 114, pl. 5d

Type: Jongejan cult. 795 = Leiden cult. (Jongejan, Schuiteman & de Wilde) 22484 (holo L only spirit 8023)

Rhizome creeping, 0.8_1.2 mm diam. Pseudobulbs ovoid, 0.2_0.7 cm apart, 0.3_0.9 by 0.2_0.4 cm, not or hardly flattened. Petiole 1_10 mm. Leaf blade elliptic to obovate, 0.6_4 by 0.2_0.7 cm, index 2.4_14, tip acute. Inflorescence 4.5_8 cm, 1_flowered. Peduncle 3.5_6.5 cm; bracts c. 2, the longest 1.8_3 mm. Floral bracts tubular, 1.5_3 mm, tip acute to acuminate. Pedicel and ovary 3.5_12 mm, with the node 1_2.5 mm from the floral bract. Flowers moderately opening. Median sepal ovate, 6_24 by 1.5_2.8 mm, index 3.5_8.6, tip long acuminate to caudate; margins glabrous to finely ciliate; thin; surface glabrous. Lateral sepals free (sometimes somewhat adherent along their lower margins), oblique, 8_29 by 1.5_4 mm, index 2.3_8.3; otherwise as the median sepal. Petals ovate to elliptic, 0.6_1.5 by 0.8_1.5 mm, index 0.4_1.3, tip rounded to acute; margins glabrous to erose; thin; surface glabrous. Lip somewhat curved at the base, general outline ovate to triangular, often somewhat tapering towards the tip, 2.5_4.5 by 1_2.3 mm, index 1.8_2.9 (not spread), tip acute; margins finely papillose to ciliate; rather thick; surface glabrous or finely papillose locally; adaxially with a distinct basal concavity, basal teeth converging, together forming a transverse ridge with a deep notch half_way, top part of the lip flat or convex; abaxially with an inconspicuous, truncate median ridge. Column from ovary to the tip of the rostellum 1_1.8 mm; rostellum distinctly protruding; stigma obovate, slightly protruding at its base or not; column foot with a distinct, distinctly upwards pointing, rounded central knob above the attachment of the lip. Anther abaxially with a wide ridge towards its tip; front margin not protruding. (After Vermeulen, 1993)

Colours: Sepals and petals white to pale green, with dull red to purple veins and margins. Lip suffused with dull red or purple.

Habitat: Epiphyte in montane forest; 1000_3300 m.

Flowering time in the wild: February, March, May, August, September, December.

Distribution: Malesia (New Guinea).

Distribution in New Guinea: Papua New Guinea; see map: 96-875M.jpg.