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Any of numerous plants of the genus Polygonum and several closely related genera of the family Polygonaceae, characterized by stems with knotlike joints and sheathing stipules.

[New Latin Polygonum, genus name, from Greek polugonon, knotgrass : polu-, poly- + gonu, knee; see genu- in Indo-European roots.]


(Plants) any polygonaceous plant of the genus Polygonum, having stems with knotlike joints and spikes of small white, green, or pink flowers. Also called (obsolete): polygony See also knotgrass, bistort, prince's feather2
[C18: New Latin, from Greek polugonon knotgrass, from polu- poly- + -gonon, from gonu knee]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.polygonum - diverse genus of herbs or woody subshrubs of north temperate regionsPolygonum - diverse genus of herbs or woody subshrubs of north temperate regions
dicot genus, magnoliopsid genus - genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination
buckwheat family, family Polygonaceae, Polygonaceae - a family of plants of order Polygonales chiefly of the north temperate zone; includes the buckwheats
China fleece vine, Polygonum aubertii, Russian vine, silver lace vine - twining perennial vine having racemes of fragrant greenish flowers; western China to Russia
buckwheat, Fagopyrum esculentum, Polygonum fagopyrum - a member of the genus Fagopyrum; annual Asian plant with clusters of small pinkish white flowers and small edible triangular seeds which are used whole or ground into flour
kiss-me-over-the-garden-gate, Polygonum orientale, prince's-feather, prince's-plume, princess feather - annual with broadly ovate leaves and slender drooping spikes of crimson flowers; southeastern Asia and Australia; naturalized in North America
References in periodicals archive ?
They eat mainly seeds, especially cereal grain, but also seeds of grasses, polygonums, mouse-ear and chickweed.
In addition, Starane XL also has good activity on some of the main weed problems in spring cereals, including polygonums, mayweeds and chickweed.
Even on the alpine bed, you'll find the autumn Gentians and Polygonums brighten up what can be a dull time of the year.