Asteraceae Lai Chau Prov., Sin Ho Distr., Phin Ho Mun., Ta Genh vill., around point 22?28′32′' N, 103?17′25′' E, 900 m. Along trails and roads, on abandoned shifting areas of limestone and non-limestone mountains.
Weed annual herb. Very common. Flowers blue. HAL 8763 10 Jun 2006 Photos Collectors: P.K. Loc, N.T. Vinh, N.S. Khang and P.N. Quan.
Collected with the financial support from the Program of Basic Researchs in Life Sciences, Vietnam.