Acmella radicans var. debilis (Kunth) R. K. Jansen (Asteraceae), A Newly Naturalized Plant in China

Abstract:

Acmella radicans var. debilis (Kunth) R. K. Jansen, is recently found to be naturalized in Yixian, Anhui, China which is native to South America and the West Indies. Morphological variations of this variety have been carefully examined and habitats information have also been collected during field investigation. Detailed description and color photographs are provided for the facility of identification. Individuals of this plant form a large population in Yixian and produce many mature seeds, suggesting that it may be invasive to some extent.