1. Pyrethrum | |
Made of dried flower heads of pyrethrum plants
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2. Pyrethrum [ Synonyms: chrysanthemum cinerariifolium, dalmatia pyrethrum, dalmatian pyrethrum, tanacetum cinerariifolium] | |
White-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum
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3. Pyrethrum [ Synonyms: chrysanthemum coccineum, painted daisy, tanacetum coccineum] | |
Spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers; source of an insecticide; sometimes placed in genus Chrysanthemum
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4. Pyrethrum [ Synonyms: genus pyrethrum] | |
Used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum
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