Quang Binh Prov., Minh Hoa Distr., Thuong Hoa Comm., Mo O O O Vill., Ruc Lan Valley, 17°40′52″N, 105°55′09″E, 260-270 m. In closed evergreen primary forests and in secondary broad-leaved woodlands from stream banks to foot of shale mts.
Small evergreen tree, up to 7-12 m tall or more. Young flower buds. Rare.