Bulbophyllum betchei

Smith, J.J., Orchid. Java, Fig.-Atl. (1911) fig. 343, as Bulbophyllum perductum J.J.Sm.
Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 286, fig. 1097, as Bulbophyllum dasyphyllum Schltr.
O'Byrne, P., Lowland Orchid. Papua New Guinea (1994) 468, fig.