Bulbophyllum maboroense Schltr., floral analysis, R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 274, fig. 1049
Bulbophyllum maboroense Schltr., herbarium sheet, Schlechter 19549 (isotype specimen K), photo copyright the Board of Trustees of the Royal Botanic Gardens, Kew