Bulbophyllum absconditum

Smith, J.J., Orchid. Java, Fig.-Atl. (1911) fig. 341
Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 296, fig. 1137, as Bulbophyllum ochrochlamys Schltr.
Vermeulen, J.J., Orchid Monogr. 7 (1993) 125, fig. 78a-h