Here you will find one or more explanations in English for the word Polygonum.
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PolygonumPolygonaceous Pol`y*go*na"ceous, a. [See Polygonum.] (Bot.)
Of or pertaining to a natural order of apetalous plants
(Polygonace[ae]), of which the knotweeds (species of
Polygonum) are the type, and which includes also the docks
(Rumex), the buckwheat, rhubarb, sea grape (Coccoloba),
and several other genera. Polygonum
Polygonum Po*lyg"o*num, n. [NL., fr. Gr. ? a kind of plant;
poly`s many + go`ny the knee, a joint of a plant. So called
in allusion to the numerous joints.] (Bot.)
A genus of plants embracing a large number of species,
including bistort, knotweed, smartweed, etc.
Meaning of Polygonum from wikipedia
