Lai Chau Prov., Tam Duong Distr., Ho Thau Community, Ho Thau village, around point 22°22′19″N 103°36′14″E.
Secondary and primary evergreen closed forest on very steep mountain slopes composed with granite and quartzite at elevation from 1500 to 2000 m a.s.l.
Terrestrial herb up to 1 m tall on very steep rocky shady mountain slope. Flowers green with purple-violet and yellow. Not rare.
HAL 10245 30 Nov. 2006 Coll.: Nguyen Tien Hiep, L.Averyanov, Pham Van The.