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 secondary broad-leaved woodlands and scrubs regenerated on slash and burn abandoned shale areas and edges of logged primary closed evergreen shale forests on stream banks.