pineapple weed
noun
mass noun
1- a small strongly aromatic mayweed with flowers that lack ray florets and resemble tiny pineapples香甘菊。
1.1
- Genus Matricaria, family Compositae: the European M. matricarioides and the North American M. discoidea.母菊属, 菊科：欧洲月花母菊以及北美的圆盘母菊。