Agrostophyllum elongatum

Smith, J.J., Orchid. Java (1905) 288, as Agrostophyllum hasseltii (Blume) J.J.Sm.
Smith, J.J., Nova Guinea 8, 1 (1909) 39, t. 13, fig. 43, as Agrostophyllum costatum J.J.Sm.
Smith, J.J., Orchid. Java, Fig.-Atl. (1910) fig. 220, as Agrostophyllum hasseltii (Blume) J.J.Sm.
Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912) 279, as Agrostophyllum costatum J.J.Sm.
Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1923) t. 102, fig. 381, as Agrostophyllum costatum J.J.Sm.
Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1923) t. 102, fig. 382, as Agrostophyllum costatum J.J.Sm. var. concavum Schltr.
Lewis, B.A. & P.J. Cribb, Orchids of the Solomon Islands and Bougainville (1991) 128
O'Byrne, P., Lowland Orchid. Papua New Guinea (1994) 116, fig.
Schuiteman, A., Orchid Monogr. 8 (1997) 9, fig. 1, 2, pl. 1a, b