Distribution map of Bulbophyllum trachybracteum
Bulbophyllum trachybracteum Schltr., floral analysis, R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 282, fig. 1081
Bulbophyllum trachybracteum Schltr., herbarium sheet, Schlechter 19087 (isotype specimen K), photo copyright the Board of Trustees of the Royal Botanic Gardens, Kew