中国菊科一新归化植物--白花金钮扣

摘要

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 ifeld investigation. Detailed description and color photographs are provided for the facility of identiifcation. Individuals of this plant form a large population in Yixian and produce many mature seeds, suggesting that it may be invasive to some extent.%报道了中国菊科一新归化植物——白花金钮扣[Acmella radicans var. debilis (Kunth) R. K. Jansen]，并提供了该变种详细的特征描述和彩色照片。该变种原产南美洲和西印度群岛，最近在我国安徽黟县发现一归化居群。野外调查发现，该植物在黟县生长旺盛，成熟时种子结实量大，表现出一定的入侵性。