Thanh Hoa Prov., Thuong Xuan Distr., Van Xuan Municipality, Quan village, Xuan Lien Natural Reserve. Secondary broad-leaved evergreen forest on sandstone hills at elevation 300-500 m a.s.l. around point 19°51’27.0’’N 105°12’46.0’’E.
Terrestrial sedge on steep shady slope. Very common.