S. Vietnam, Kontum prov., Dak Gley district, road ¹ 14, Lo So Deo Pass. Evergreen broad-leaved mountain forest. Rare. 25 November 2014, Vo Van Cong, sine n.
Herbarium prepared in 20 March 2020. Flowers yellowish , lip with purple marks. 20 March 2020, L.Averyanov, AL 1263.