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nouna large genus of plants resembling chrysanthemums; comprises some plants often included in other genera especially genus Chrysanthemum
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Definition that contains tanacetum
- chrysanthemum any of numerous perennial Old World herbs having showy brightly colored flower heads of the genera Chrysanthemum, Argyranthemum, Dendranthema, Tanacetum; widely cultivated
- pyrethrum used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum
- genus chrysanthemum in some classifications many plants usually assigned to the genus Chrysanthemum have been divided among other genera: e.g. Argyranthemum; Dendranthema; Leucanthemum; Tanacetum
- genus matricaria chiefly Old World strong-smelling weedy herbs; comprises plants sometimes included in other genera: e.g. Tanacetum; Tripleurospermum
- genus pyrethrum used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum
- matricaria chiefly Old World strong-smelling weedy herbs; comprises plants sometimes included in other genera: e.g. Tanacetum; Tripleurospermum