Bulbophyllum pachytelos

Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 1 (1913) 857
Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 297, fig. 1139
Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 297, fig. 1141, as Bulbophyllum proximum Schltr.
Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 297, fig. 1140, as Bulbophyllum geminum Schltr.
Vermeulen, J.J., Orchid Monogr. 7 (1993) 138, fig. 94