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 and woodlands on slopes of limestone mts., at elevation about 759-820 m a.s.l. Terrestrial, ca. 0.3 m tall. Flowers yellow. Rare.