Thailand.— NORTHERN: Chiang Rai (Doi Langka), Lampang (Chae Son), Nan (Doi
Phukha); NORTHEASTERN: Loei (Phu Ruea); SOUTHWESTERN: Kanchanaburi (Khao Lieo
Long).
Distribution.— China (Guizhou,Yunnan), Thailand.
Ecology.— Along streams in hill evergreen forest; flowering Nov.– April, fruiting
April–July.