Any of several tall North American plants of the genus Eupatorium, having whorled leaves and terminal clusters of small pinkish or purplish flower heads.

• 斑茎泽兰：任一种产于北美洲的斑茎泽兰属高大的植物，长有轮生叶，开有顶生的花簇，花冠形小，为偏粉色或偏紫色