Lai Chau Prov., Sin Ho Distr., Ta Ngao Municipality, Hai Ho village, around point 22°16′09″N 103°14′34″E.
Remnants of primary and secondary evergreen closed wet forest on very steep rocky slopes and cliffs of remnant mountains composed with stratified solid gray highly eroded limestone at elev. 1500-1600 m a.s.l.
Terrestrial herb in open grassy rocky places. Flowers yellow. Very common.
HAL 10031 20 Nov. 2006 Coll.: Nguyen Tien Hiep, L.Averyanov, Pham Van The.