Distribution map of Bulbophyllum cruciatum
Bulbophyllum cruciatum J.J.Sm., floral analysis, drawing J.J. Smith, from Bogor cult. (Exp. Lorentz, Djibdja 278) s.n.
Bulbophyllum immobile Schltr., floral analysis, R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 237, fig. 900
Bulbophyllum mutatum J.J.Sm., floral analysis, R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 237, fig. 899
Bulbophyllum cruciatum J.J.Sm., herbarium sheet, probably syntype specimen, Bogor cult. (Branderhorst) 51 b (=no. 51) (BO, probably syntype specimen)