Quang Binh Prov., Minh Hoa Distr., Thuong Hoa Comm., Ban On Vill. (ca. 150 m in N front of Village’s HQ), 17°40′21″N, 105°57′59″E, 250-270 m.
In secondary grasslands and scrubs, waste localities, edges of heavily logged primary evergreen broad-leaved forests, foot of limestone mts. Perennial herb ?. Common.