FLORA OF VIETNAM Pteroceras simondianum (Gagnep.) Aver. Tuyen Quang prov., Na Hang distr., Sinh Long commune, Na Tau village, around point 22034′22″ N, 105023′25″ E, 300 m. In logged closed primary evergreen broad-leaved lowland forests on stream banks of limestone areas. Eipiphyte.
CPC 1365 14 Mar 2011
Coll. N.Q. Hieu, N.T. Hiep, P.K. Loc & N.T. Vinh
Flowered in 25 April 2017. Tepals yellow with purple-brown marks.