Distribution map of Bulbophyllum alabastraceum
Bulbophyllum alabastraceum P.Royen, Alpine Fl. Ndew Guinea 2 (1979) 218, fig 79, P. van Royen, drawing, plant habit and flower analysis, based on NGF 31675 (Ridsdale) (holo K; iso L, LAE)
Bulbophyllum alabastraceum P.Royen, J.J. Vermeulen, sketch, plant habit and flower analysis, based on Reeve 1078 (L)