Bulbophyllum savaiense gorumense

Bulbophyllum savaiense Schltr. subsp. gorumense (Schltr.) J.J.Verm., Orchid Monogr. 7 (1993) 140, fig. 96

Basionym: Bulbophyllum gorumense

Rhizome patent to pendulous, up to 70 cm long, 0.8-2.5 mm diam. Pseudobulbs ovoid to ellipsoid, 0.3-5.5 cm apart, 1.3-5 by 0.6 cm, somewhat flattened or not. Petiole 1--9 mm. Leaf blade ovate to elliptic, 2.5-8.5 by 1.2-3.6 cm, index 2.3-12, tip acute. Inflorescence 1.5-4.5 cm, 4-9-flowered. Peduncle 0.3-1.4 cm; bracts c. 3, the longest 1.8-6 mm. Rachis 0.2-4.8 cm. Floral bracts triangular, 1-3 mm, tip acute. Pedicel and ovary 1-2.5 mm, with the node 0.2-1 mm from the floral bract. Flowers widely opening. Median sepal ovate to elliptic, 2-3.6 by 1-1.5 mm, index 1.6-3.5, tip short or long acuminate; rather thick; approx. glabrous. Lateral sepals free, 1.5-4.8 by 0.8-2.5 mm, index 1.3-3.9; otherwise as the median sepal. Petals elliptic to obovate, 1-1.5 by 0.31 mm, index 1.4-2.4, tip rounded to subacute; margins and adaxial surface often papillose towards the tip; thin. Lip approx. straight, general outline orbicular to (ob)ovate to (transversely) elliptic, 0.7-1.2 by 0.5-1 mm, index 1-1.8 (not spread), tip truncate to rounded; approx. glabrous to finely papillose; thick; adx. with a distinct basal concavity, basal teeth converging, together forming a transverse ridge with a deep slit half-way, top part of the lip also distinctly concave; abx. without a median ridge. Column from ovary to the tip of the rostellum 0.2-0.8 mm; rostellum protruding; stigma approx. orbicular, protruding at its base; column-foot with a distinct, rounded central knob above the attachment of the lip. Stelidia absent or inconspicuous, if present deltoid, tip obtuse to acute. Anther abx. with a ridge; front margin not protruding. (After Vermeulen, 1993)

Colours: Sepals and petals pale green, yellow, cream-coloured or white. Lip white, cream-coloured, yellow, orange or red.

Habitat: Epiphyte in montane forest; 1100-3200 m.

Flowering time in the wild: April, May, July, August, September, November.

Distribution: Malesia (New Guinea).

Distribution in New Guinea: Papua New Guinea; see map 96-1646M.jpg.

Cultivation: Cool growing epiphyte.