Ha Giang Prov., Quan Ba Distr., vicinities of Quan Ba town around point 23°02′42″N, 104°59′35″E.
Evergreen broad-leaved forest on rocky outcrops and cliffs of remnant mesae composed with highly eroded solid marble-like limestone at elevation 1000-1100 m a.s.l.
Epiphyte.
HAL 11131 ass. 20 Apr. 2007. Photo. Coll.: L.Averyanov, N.T.Hiep, A.Averyanova.