REFERENCES
- Alderwerelt van Rosenburgh , C. R.W.K. 1922 . New or noteworthy Malayan Araceae II. . Bull. Jard. Bot. Buitenzorg , 3 ( 4 ) : 163 – 229 .
- Bogner , J. and Hay , A. 2000 . Piptospatha. . Telopea , 9 ( 1 ) : 183 – 194 . Schismatoglottideae in Malesia II—Aridarum, Bucephalandra, Phymatarum
- Engler , A. 1879 . Araceae specialmente Borneensi e Papuane raccolte da O. Beccari. . Bull. R. Soc. Tosc. Ortic. , 4 : 265 – 271 . 295–302
- Engler , A. 1881 . Beiträge zur Kenntnis der Araceae I. . Bot. Jahrb. Syst. , 1 : 179 – 190 .
- Engler , A. 1912 . “ Araceae-Philodendroideae-Philodendre- ae-Homalomeninae und Schismatoglottidinae. ” . In Das Pflanzenreich Edited by: Engler , A. Vol. 55 , 1 – 134 . Leipzig : W. Engelmann . (IV. 23Da)
- Wong , S. Y. , Boyce , P. C. and Bogner , J. 2009 . Studies on Schismatoglottideae (Araceae) of Borneo VIII: A review of the Piptospatha elongata Group in West Sarawak. . Gardens' Bull. Sing. , 61 ( 1 ) : 221 – 238 .