Distribution map of Bulbophyllum tortum
Bulbophyllum tortum Schltr., plant, photo details lost
Bulbophyllum tortum Schltr., flower, front view, with fruit flies, cult. and photo G. Stocker
Bulbophyllum tortum Schltr., flower, photo P. O'Byrne, based on O'Byrne B042
Bulbophyllum tortum Schltr., floral analysis, R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 246, fig. 936