Hoa Binh Prov., Lac Son Distr., Ngoc Son Municipality, Khu Village, Chan Lan Mt., around point 20°27′15”N 105°19′37”E.
In open places of heavily logged closed primary and secondary evergreen broad-leaved forest and woodland on shale soils at elevation about 600-700 m a.s.l.
Shrub, ca. 3-5 m tall. Petal yellowish-greenish. Occasional common.