Lai Chau Prov., Muong Te Distr., Muong Te Municipality, Nam Cum village, around point 22°32′06″N 102°32′29″E.
Secondary evergreen forest with bamboo on very steep slopes of remnant bluffly mountain composed with slid gray highly eroded limestone along Song Da River canyon at elev. 300-600 m a.s.l.
Lithophytic herb on travertine deposits on vertical shady cliff. Not common.
HAL 10114 23 Nov. 2006 DNI fix. Coll.: Nguyen Tien Hiep, L.Averyanov, Pham Van The.