Vietnam, Ha Giang Prov., Yen Minh Distr, Lao Va Chai Municipality, vicinities of Chi Sang village around point 23°06′20″N, 105°04′25″E at elevation about 1450 m a.s.l.
Primary mossy coniferous forest with Tsuga sinensis on tops of high rocky ridge composed with highly eroded marble-like limestone.
Terrestrial and lithophytic herb up to 1.5 m tall in open places. Flowers pink-purple, tepals at the base yellow, red striped. Very common.