Bulbophyllum citrellum Ridl., Trans. Linn. Soc. London, Bot. 9 (1916) 184
Type: Kloss s.n. (Camp 11 to 12, 8300 to 11000 ft.) (holo BM)
Epiphyte, very small, tufted. Roots long. Pseudobulbs conical 0.2 by 0.1 cm thick. Leaf elliptic, obtuse, 3-nerved, coriaceous, 0.7 by 0.3 cm; base narrowed. Inflorescence slender, 3.5 cm long, 1-flowered. Floral bract funnel-shaped, half as long as the 0.1 cm long subsessile ovary. Median sepal linear, acuminate, 0.8 by 0.1 cm to the base. Lateral sepals connate, glabrous, 0.8 by 0.2 cm; the base gibbose; the apex acute. Petals lanceolate, triangular, long acuminate, 0.6 by 0.05 mm; margins ciliate. Lip lanceolate, boat-shaped, thin; auricles 2 short erect oblong; the base rounded; margins ciliate. Column very small, twice as long as the column-foot; stelidia oblong, obtuse, surpassing the column. Anther very small, ovate, rounded. (After Ridley, 1916)
Colours: Hairs on petals and lip yellow.
Habitat: Epiphyte in montane forest; 759-3339 m.
Distribution: Malesia (New Guinea).
Distribution in New Guinea: Papua (Indonesia); see map 96-348M.jpg.
Cultivation: Cool growing epiphyte.