
1) Dicot genus 2) Genus polygonum 3) Magnoliopsid genus
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https://www.crosswordclues.com/clue/polygonum

Polygonum is a genus in the Polygonaceae family. Common names include knotweed, knotgrass, bistort, tearthumb, mile-a-minute, and several others. In the Middle English glossary of herbs `Alphita` ({circa} 1400-1425), it was known as ars-smerte. There have been various opinions about how broadly the genus should be defined. For example, Buckwheat.....
Found on
http://en.wikipedia.org/wiki/Polygonum

• (n.) A genus of plants embracing a large number of species, including bistort, knotweed, smartweed, etc.
Found on
http://thinkexist.com/dictionary/meaning/polygonum/
Po·lyg'o·num noun [ New Latin , from Greek ... a kind of plant;
poly`s many +
go`ny the knee, a joint of a plant. So called in allusion to the numerous joints.]
(Botany) A genus of plants embracing a large number of species, including bistort, knotweed, smartweed, et...
Found on
http://www.encyclo.co.uk/webster/P/121

[
n] - diverse genus of herbs or woody subshrubs of north temperate regions
Found on
http://www.webdictionary.co.uk/definition.php?query=Polygonum
genus Polygonum noun diverse genus of herbs or woody subshrubs of north temperate regions
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.