FLORA OF VIETNAM Asteraceae Cirsium sp. (or Carduus sp.?)
Vietnam, Ha Giang Prov., Yen Minh Distr, Lao Va Chai Municipality, vicinities of Chi Sang village around point 23°06′20″N, 105°04′25″E at elevation about 1450 m a.s.l.
Primary mossy coniferous forest with Tsuga sinensis on tops of high rocky ridge composed with highly eroded marble-like limestone.
Terrestrial and lithophytic herb up to 2.5 m tall in open places. Flowers whitish. Locally common.