Bogner & A.Hay (M.Hotta) 1978 - Bogner J, Hay A (2000) Schismatoglottideae (Araceae) in Malesia: 2. Aridarum, Bucephalandra, Phymatarum and Piptospatha. Telopea 9: 179-222. doi: 10.7751/telopea20002009.
There is no corrections for Piptospatha truncata yet.