Distribution map of Bulbophyllum bigibbum
Bulbophyllum bigibbum Schltr., Orchid Monogr. 7 (1993) 181, fig. 136, J.J. Vermeulen, drawing, plant habit and flower analysis, based on Ledermann 10123 (iso L)
Bulbophyllum bigibbum Schltr., herbarium sheet, Ledermann 10123 (isotype L)