Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 252, fig. 961
Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 252, fig. 960, as Bulbophyllum planilabre Schltr.
Vermeulen, J.J., Orchid Monogr. 7 (1993) 168, fig. 123
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