Polygonaceae(redirected from Knotweed Family)
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|Noun||1.||Polygonaceae - a family of plants of order Polygonales chiefly of the north temperate zone; includes the buckwheats|
dicot family, magnoliopsid family - family of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination
genus Eriogonum - North American herbs of the buckwheat family