parthenium definition

  • noun:
    • A genus of composite plants, of the tribe Helianthoideæ and subtribe Melampodieæ, understood by the tiny wide rays, in addition to thickish compressed or triangular achenes, frequently solidly united toward enveloping bract, with narrow margins isolating half-way at readiness.
    • tiny genus of us natural herbs and bushes with critical panicles of tiny ray flowers

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