Abstract
Arnica, the only genus within subtribe Arnicinae under tribe Madieae of the Asteraceae, is a circumboreal genus of 29 species mainly distributed in western North America, with a few in Europe and Asia. Here we report the occurrence of the genus in China for the first time. A population of Arnica angustifolia subsp. angustifolia was discovered in Qinghe County, Xinjiang. Our identification is confirmed by evidence from ITS/ETS sequence data.