Persicaria Mill.
(knotweeds)

Interactions where Persicaria is the victim or passive partner (and generally loses out from the process)

The following relationships have been collated from the published literature (see 'Interaction References').

Filters:

Affected Part Summary Taxon Vernacular Classification References Darwin Classification of Active Taxon Active Taxon Active Vernacular Active Taxon Uncertain Active State Active Part Active Stage Relationship Relationship Uncertain Relationship Geography Darwin Classification of Passive Taxon Passive Taxon Passive Vernacular Passive Taxon Uncertain Passive State Passive Part Passive Stage Passive Taxon's significance to Active Taxon Indoors etc Season Summary
leaf (underside) (rolled) rolled leaf (underside) is grazed by larva Restricted Euura albipennis a sawfly Hymenoptera: Tenthredinidae Hymenoptera: 2. Symphyta. Section (c), Benson, R.B., 1958
 /Animalia/Arthropoda/Insecta/Hymenoptera/Tenthredinidae/Euura albipennis/Euura albipennisa sawflylarva Foodplant / open feeder /Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Polygonaceae/Persicaria/Persicariaknotweedsrolledleaf (underside)Sole larva grazes on rolled leaf (underside)
stem (dead, lying in water) dead, lying in water stem is decayed by stalked apothecium Hymenoscyphus scutula a discomycete Helotiales: Helotiaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
 /Fungi/Ascomycota/Leotiomycetes/Helotiales/Helotiaceae/Hymenoscyphus scutula/Hymenoscyphus scutulaa discomycetestalkedapothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Polygonaceae/Persicaria/Persicariaknotweedsdead, lying in waterstem (9-11)stalked apothecium is saprobic on dead, lying in water stem

Author & YearTitleSource
Benson, R.B., 1958Hymenoptera: 2. Symphyta. Section (c)Handbooks for the Identification of British Insects , Vol VI, Part 2(c), 252pp, The Royal Entomological Society of London
Ellis, M.B. & J.P., 1997Microfungi on Land Plants: An Identification Handbook2nd (New Enlarged) edition, 868pp, The Richmond Publishing Co. Ltd

Persicaria (knotweeds) may also be included in 'fed on by' relations listed under the following higher taxa:

Subtaxon Rank Featured
subtaxa		 No of
interactions		 No of
references
Persicaria alpina
Alpine Knotweed
Species 2 trophisms
Persicaria amphibia
Amphibious Bistort
Species 13 trophisms
Persicaria amplexicaulis
Red Bistort
Species 1 trophisms
Persicaria bistorta
Common Bistort
Species 11 trophisms
Persicaria hydropiper
Water-pepper
Species 8 trophisms
Persicaria lapathifolia
Pale Persicaria
Species 10 trophisms
Persicaria maculosa
Redshank
Species 20 trophisms
Persicaria minor
Small Water-pepper
Species 1 trophisms
Persicaria mitis
Tasteless Water-pepper
Species 2 trophisms
Persicaria vivipara
Alpine Bistort
Species 12 trophisms 1 references
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)
NBNNBN (data.nbn.org.uk) has a distribution map for Persicaria (knotweeds)

Identification Works

Handling & MagnificationAuthorYearTitleSource
() 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:

Literature listed under the following higher taxa may be relevant to Persicaria (knotweeds):

BioImagesBioImages (www.bioimages.org.uk) has 84 images of Persicaria (knotweeds)
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