Polygonum L.
(knotgrass)

Subtaxon Example images Rank Featured
subtaxa		 No of
images		 No of
ID refs
Polygonum arenastrum
Equal-leaved Knotgrass
(Click to open)
 		Species 31 images
Polygonum maritimum
Sea Knotgrass
(Click to open)
 		Species 5 images
Taxonomic hierarchy:
GenusPolygonum (knotgrass)
FamilyPOLYGONACEAE (docks and knotgrasses)
OrderCARYOPHYLLALES (pinks, goosefoots and docks)
SubclassEU-DICOTS (dicotyledonous flowering plants)
ClassMAGNOLIOPSIDA (flowering plants)
PhylumTRACHEOPHYTA (vascular plants)
KingdomPLANTAE (plants)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)

Polygonum (knotgrass) may be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Polygonum (knotgrass)
BioInfoBioInfo (www.bioinfo.org.uk) has 40 host/parasite/foodplant and/or other relationships for Polygonum (knotgrass)
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