Northern Vietnam, Lao Cai Prov., Van Ban Distr., Khanh Yen Ha municipality, to the SW of Na Nheo village (in the vicinity of point 21ш58'12''N, 104ш14'02''E). Secondary evergreen broad-leaved montane forest with bamboo on steep granite and quartzite slopes at elev. 1600-1700 m a.s.l. Terrestrial sedge on very steep slope. Very common. Usual co-dominant of herb forest stratum.