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 750-820 m a.s.l. Terrestrial, ca. 0.1-0.15 m tall. Rare.