Calanthe caulescens

Smith, J.J., Nova Guinea 12, 1 (1913) 13, t. 4, fig. 8
Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1923) t. 132, fig. 497, as Calanthe apostasioides Schltr.
Royen, P. van, Alp. Fl. New Guinea 2 (1979) 128, fig. 54, as Calanthe apostasioides Schltr.
Royen, P. van, Alp. Fl. New Guinea 2 (1979) 131
Thomas, S., Blumea 44 (1999) 31, fig. 3