Any of various plants of the genus Zinnia, native to tropical America, especially Z. elegans, widely cultivated for its showy, rayed, variously colored flower heads.

• 百日菊原产美洲热带地区的一种百日菊属植物，尤其是菊科，因其有各种颜色的、艳丽的舌状花头而被广泛栽植