Tripleurospermum

• Comprises plants sometimes included in other genera e.g. Tanacetum
• Chiefly Old World strong-smelling weedy herbs

Wikipedia Word definitions in Wikipedia
Matricaria is a genus of flowering plants in the Chamomile tribe within the ( sunflower family ). Some of the species have the common name of "mayweed," but this name also refers to plants not in this genus. Most are very common in the temperate regions ...

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Matricaria \Matricaria\ prop. n. A genus of chiefly Old World strong-smelling weedy herbs; it comprises plants sometimes included in other genera, such as Tanacetum and Tripleurospermum . Syn: genus Matricaria .