Marsdenia formosana Matsum.

Pictures 1 & 2 in Taiwan, Alishan, 26 November 2013
Pictures 3, 4, 5 & 6 in Taiwan, Taroko, 01 December 2013
Picture 7 in Taiwan, Fuxing to Qilan Valley, 22 November 2013

Publication in J. Soc. Trop. Agric. 2: 241 (1930)