Persicaria Mill.
(knotweeds)

Subtaxon Example images Rank Featured
subtaxa		 No of
images		 No of
ID refs
Persicaria amphibia
Amphibious Bistort
(Click to open)
 		Species 1 subtaxa 9 images
Persicaria bistorta
Common Bistort
(Click to open)
 		Species 6 images
Persicaria campanulata
Lesser Knotweed
Leaves (Click to open)
 		Species 1 subtaxa 10 images
Persicaria hydropiper
Water-pepper
(Click to open)
 		Species 38 images
Persicaria maculosa
Redshank
(Click to open)
 		Species 20 images
Persicaria vivipara
Alpine Bistort
(Click to open)
 		Species 1 images
Taxonomic hierarchy:
GenusPersicaria (knotweeds)
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)

Identification Works

AuthorYearTitleSource
() Lansdown R.V. & Pankhurst T.J. Field Guide to the Identification of Difficult Aquatic Plants of the New Forest

Persicaria (knotweeds) may also be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Persicaria (knotweeds)
BioInfoBioInfo (www.bioinfo.org.uk) has 82 host/parasite/foodplant and/or other relationships for Persicaria (knotweeds)
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