N. Vietnam, Ha Giang prov., Dong Van distr., Tu Tinh municipality (N 23°05′ E 105°15′), 40.7 km to 43° of Ha Giang city. Secondary grasslands among secondary shrubs on alluvial foothills of karst limestone ridge at elev. 500-550 m a.s.l. Common. Usual codominante of middle tall grasslands in the area.
NTH 3560 10 Oct. 1999
Collectors: N.T. Hiep, N.Q. Binh, L. Averyanov, P. Cribb.