Bulbophyllum orsidice Ridl., Trans. Linn. Soc. London, Bot. 9 (1916) 189
Type: Kloss s.n. (Camp VI, 3100 ft.); (Camp VI c, 3200 ft.) (syn BM)
Rhizome long creeping. Pseudobulbs 2-4 cm apart, cylindrical, erect, 3 cm long; base thickened. Leaf lanceolate, acuminate, acute, subfalcate, 5-12 by 2 cm; base narrowed, petiole channelled, 4-5 cm long; dorsally keeled. Inflorescence slender, 35 cm long or longer. Inflorescence to 6 cm long. Floral bracts to 17, clasping, cup-shaped, 0.7 by 0.3 cm, with a long tooth. Median sepal linear, acuminate, 5-nerved, 2 by 0.1 cm at the base. Lateral sepals 2.5 cm long; base connate, yellow; nerves inconspicuous. Petals triangular, cuspidate, 1 mm long. Lip linear, acuminate, 2.5 by 0.2 cm; base cordate; lobes on either side side 2, acuminate and cuspidate, laterally flattened, between them two rounded, erect lobes and a median groove; midrib raised. Column 0.65 cm [‘mm’]long; stigma a large, oblong, depression; stelidia ovate, subacute; column-foot channelled. Anther large, oblong, pileate. Pedicel and ovary slender, 1.5 cm long. (After Ridley, 1916)
Colours: Petals with purple keel and cusp.
Habitat: Epiphyte in lower montane forest; 759-971 m.
Distribution: Malesia (New Guinea).
Distribution in New Guinea: Papua (Indonesia); see map 96-1319M.jpg.
Cultivation: Intermediate growing epiphyte.