Hoa Binh Prov., Tan Lac Distr., Ngo Luong Municipality, Tram Hai Village, coordinate ca. 20°28′04”N 105°16′46”E.
In heavily logged evergreen broad-leaved forests on slopes of limestone mts., at elevation about 750-800 m a.s.l. Epiphyte. Flowers white-red. Rather common.