Cleisostoma firmulum

Smith, J.J., Nova Guinea 8, 1 (1909) 123, t. 42, fig. 139, as Sarcanthus bicornis J.J.Sm.
Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 1 (1913) 990, as Sarcanthus bicornis J.J.Sm.
Smith, J.J., Nova Guinea 12, 1 (1913) 104, as Sarcanthus bicornis J.J.Sm.
Smith, J.J., Nova Guinea 12, 3 (1916) 462, as Sarcanthus bicornis J.J.Sm.
Lewis, B.A. & P.J. Cribb, Orchids of the Solomon Islands and Bougainville (1991) 283
O'Byrne, P., Lowland Orchid. Papua New Guinea (1994) 492, fig., as Cleisostoma bicorne (J.J.Sm.) Garay