Bulbophyllum bulliferum

Smith, J.J., Nova Guinea 8, 1 (1909) 90, t. 30, fig. 98
Smith, J.J., Nova Guinea 12, 4 (1916) 411, t. 155, fig. 288, as Bulbophyllum verrucibracteum J.J.Sm.
Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 306, fig. 1177, as Bulbophyllum barbilabium Schltr.
Smith, J.J., Nova Guinea 18, 1 (1935) 68, as Bulbophyllum verrucibracteum J.J.Sm.
Vermeulen, J.J., Orchid Monogr. 7 (1993) 84, fig. 43 & 44