jointweed definition

  • noun:
    • Any person in the genus Polygonella of knotweeds and smartweeds.
    • A slender, almost leafless, US natural herb (Polygonum articulatum), with jointed spikes of tiny blossoms.
    • Polygonum articulatum, an American plant: so-called from the many-jointed spike-like racemes.
    • A. title of a species of Equisetum.
    • The mare's tail, Hippuris vulgaris.

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