Distribution map of Bulbophyllum rugulosum
Bulbophyllum rugulosum J.J.Sm., floral analysis, drawing J.J. Smith, from Docters van Leeuwen 11014
Bulbophyllum rugulosum J.J.Sm., column and lip, drawing J.J. Smith, from Docters van Leeuwen 11014
Bulbophyllum rugulosum J.J.Sm., herbarium sheet, Docters van Leeuwen 11014 (isotype specimen BO)