common tansy (Tanacetum vulgare) |
UWSP Common Plants of Wisconsin |
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common tansy (Tanacetum vulgare; COMPOSITE FAMILY [Asteraceae]) Introduced 2-4’ tall perennial herb of open or disturbed areas. Finely dissected alternate leaves with strong odor. Foliage toxic to many animals. Upper stems with flat clusters of numerous ¼” yellow flower heads consisting of only disk florets. Each flower head flat-topped and button-like. Blooms mid-summer to fall. [116]
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