Bulbophyllum trifilum J.J.Sm. subsp. filisepalum (J.J.Sm.) J.J.Verm., Gard. Bull. Singapore 54 (2002) 287
Basionym: Bulbophyllum filisepalum
Leaf blade 5.5-13 by 0.2-0.8 cm, index 10-33. flat or semi-terete in section. Median sepal 2.2-2.6 cm long. Lateral sepals 2.3-3.1 cm long. (After Vermeulen, 1993)
Colours: As for subsp. trifilum.
Habitat: Epiphyte in lower montane ridge forest; 2100-2300 m.
Flowering time in the wild: June, July, August, December.
Distribution: Malesia (New Guinea).
Distribution in New Guinea: Papua (Indonesia); Papua New Guinea; see map 96-1882M.jpg.
Cultivation: Intermediate growing epiphyte.