Polygonum aviculare L.
(Knotgrass)

Interactions where Polygonum aviculare 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
(live)		live is parasitised by sporangium			Peronospora polygoni	a downy mildew	Peronosporales: Peronosporaceae	A Checklist of the Downy Mildews (Peronosporaceae) of the British Isles, Preece, T.F., 2002	/Chromista/Oomycota/Peronosporea/Peronosporales/Peronosporaceae/Peronospora polygoni/	Peronospora polygoni	a downy mildew				sporangium	Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Polygonaceae/Polygonum aviculare/	Polygonum aviculare	knotgrass		live						sporangium parasitises live
(live)		live is parasitised by conidial anamorph			Erysiphe polygoni	a powdery mildew	Erysiphales: Erysiphaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997 An Introduction to British Powdery Mildews, Ing, B., 1990	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Erysiphe polygoni/	Erysiphe polygoni	a powdery mildew				conidial anamorph	Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Polygonaceae/Polygonum aviculare/	Polygonum aviculare	knotgrass		live						conidial anamorph parasitises live
(live)		live is parasitised by cleistothecium			Erysiphe polygoni	a powdery mildew	Erysiphales: Erysiphaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997 An Introduction to British Powdery Mildews, Ing, B., 1990	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Erysiphe polygoni/	Erysiphe polygoni	a powdery mildew				cleistothecium	Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Polygonaceae/Polygonum aviculare/	Polygonum aviculare	knotgrass		live						cleistothecium parasitises live
bud		bud is galled by larva			Augasma aeratella	Knotgrass Case-bearer	Lepidoptera: Coleophoridae	Provisional Keys to British Plant Galls, Stubbs, F.B. (Editor), 1986	/Animalia/Arthropoda/Insecta/Lepidoptera/Coleophoridae/Augasma aeratella/	Augasma aeratella	knotgrass case-bearer				larva	Foodplant / gall			/Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Polygonaceae/Polygonum aviculare/	Polygonum aviculare	knotgrass			bud					larva causes gall of bud
inflorescence axis		inflorescence axis of stunted is galled by			Melanopsichium nepalense	a galling smut fungus	Ustilaginales: Melanopsichiaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997 Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005 Melanopsichium (Ustilaginales), a genus new to the British Isles, Spooner, B.M., 1985 Provisional Keys to British Plant Galls, Stubbs, F.B. (Editor), 1986	/Fungi/Basidiomycota/Ustilaginomycetes/Ustilaginales/Melanopsichiaceae/Melanopsichium nepalense/	Melanopsichium nepalense	a galling smut fungus					Foodplant / gall		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Polygonaceae/Polygonum aviculare/	Polygonum aviculare	knotgrass			inflorescence axis	stunted				causes gall of inflorescence axis of stunted
leaf		leaf is galled by			Aspidaphis adjuvans	an aphid	Hemiptera: Aphididae	Provisional Keys to British Plant Galls, Stubbs, F.B. (Editor), 1986	/Animalia/Arthropoda/Insecta/Hemiptera/Aphididae/Aspidaphis adjuvans/	Aspidaphis adjuvans	an aphid					Foodplant / gall			/Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Polygonaceae/Polygonum aviculare/	Polygonum aviculare	knotgrass			leaf					causes gall of leaf
leaf (live)		live leaf is parasitised by pycnium			Uromyces polygoni-avicularis	Knotgrass Rust	Pucciniales: Pucciniaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997 Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005 British Rust Fungi, Wilson, M., & Henderson, D., 1966	/Fungi/Basidiomycota/Pucciniomycetes/Pucciniales/Pucciniaceae/Uromyces polygoni-avicularis/	Uromyces polygoni-avicularis	knotgrass rust				pycnium	Foodplant / parasite			/Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Polygonaceae/Polygonum aviculare/	Polygonum aviculare	knotgrass		live	leaf		Rare		(5-6)	pycnium parasitises live leaf
leaf (live)		live leaf is parasitised by amphigenous uredium			Uromyces polygoni-avicularis	Knotgrass Rust	Pucciniales: Pucciniaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997 Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005 British Rust Fungi, Wilson, M., & Henderson, D., 1966	/Fungi/Basidiomycota/Pucciniomycetes/Pucciniales/Pucciniaceae/Uromyces polygoni-avicularis/	Uromyces polygoni-avicularis	knotgrass rust		amphigenous		uredium	Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Polygonaceae/Polygonum aviculare/	Polygonum aviculare	knotgrass		live	leaf		Major		(7-11)	amphigenous uredium parasitises live leaf
leaf (live)		live leaf is spotted by hypophyllous, aggregated or circinate aecium			Uromyces polygoni-avicularis	Knotgrass Rust	Pucciniales: Pucciniaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997 Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005 British Rust Fungi, Wilson, M., & Henderson, D., 1966	/Fungi/Basidiomycota/Pucciniomycetes/Pucciniales/Pucciniaceae/Uromyces polygoni-avicularis/	Uromyces polygoni-avicularis	knotgrass rust		hypophyllous, aggregated or circinate		aecium	Foodplant / spot causer			/Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Polygonaceae/Polygonum aviculare/	Polygonum aviculare	knotgrass		live	leaf		Rare		(5-6)	hypophyllous, aggregated or circinate aecium causes spots on live leaf
shoot tip		shoot tip is galled by			Aspidaphis adjuvans	an aphid	Hemiptera: Aphididae	Provisional Keys to British Plant Galls, Stubbs, F.B. (Editor), 1986	/Animalia/Arthropoda/Insecta/Hemiptera/Aphididae/Aspidaphis adjuvans/	Aspidaphis adjuvans	an aphid					Foodplant / gall			/Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Polygonaceae/Polygonum aviculare/	Polygonum aviculare	knotgrass			shoot tip					causes gall of shoot tip
stem		stem of stunted is galled by			Melanopsichium nepalense	a galling smut fungus	Ustilaginales: Melanopsichiaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997 Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005 Melanopsichium (Ustilaginales), a genus new to the British Isles, Spooner, B.M., 1985 Provisional Keys to British Plant Galls, Stubbs, F.B. (Editor), 1986	/Fungi/Basidiomycota/Ustilaginomycetes/Ustilaginales/Melanopsichiaceae/Melanopsichium nepalense/	Melanopsichium nepalense	a galling smut fungus					Foodplant / gall		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Polygonaceae/Polygonum aviculare/	Polygonum aviculare	knotgrass			stem	stunted				causes gall of stem of stunted
stem (live)		live stem is parasitised by telium			Uromyces polygoni-avicularis	Knotgrass Rust	Pucciniales: Pucciniaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997 Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005 British Rust Fungi, Wilson, M., & Henderson, D., 1966	/Fungi/Basidiomycota/Pucciniomycetes/Pucciniales/Pucciniaceae/Uromyces polygoni-avicularis/	Uromyces polygoni-avicularis	knotgrass rust				telium	Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Polygonaceae/Polygonum aviculare/	Polygonum aviculare	knotgrass		live	stem		Major		(7-11)	telium parasitises live stem
stem (live)		live stem is parasitised by uredium			Uromyces polygoni-avicularis	Knotgrass Rust	Pucciniales: Pucciniaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997 Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005 British Rust Fungi, Wilson, M., & Henderson, D., 1966	/Fungi/Basidiomycota/Pucciniomycetes/Pucciniales/Pucciniaceae/Uromyces polygoni-avicularis/	Uromyces polygoni-avicularis	knotgrass rust				uredium	Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Polygonaceae/Polygonum aviculare/	Polygonum aviculare	knotgrass		live	stem		Major		(7-11)	uredium parasitises live stem

Author & Year	Title	Source
Ellis, M.B. & J.P., 1997	Microfungi on Land Plants: An Identification Handbook	2nd (New Enlarged) edition, 868pp, The Richmond Publishing Co. Ltd
Ing, B., 1990	An Introduction to British Powdery Mildews	Mycologist Vol 4 (1) et seq.
Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005	Checklist of the British and Irish Basidiomycota	517pp, Royal Botanic Gardens, Kew
Preece, T.F., 2002	A Checklist of the Downy Mildews (Peronosporaceae) of the British Isles	33pp, British Mycological Society
Spooner, B.M., 1985	Melanopsichium (Ustilaginales), a genus new to the British Isles	TBMS Vol 85 (3): 540-544.
Stubbs, F.B. (Editor), 1986	Provisional Keys to British Plant Galls	95pp, British Plant Gall Society (BPGS)
Wilson, M., & Henderson, D., 1966	British Rust Fungi	384pp, Cambridge University Press

Polygonum aviculare (Knotgrass) may also be included in 'fed on by' relations listed under the following higher taxa:

Polygonum
(knotgrass)

POLYGONACEAE
(docks and knotgrasses)

EU-DICOTS
(dicotyledonous flowering plants)

MAGNOLIOPSIDA
(flowering plants)

TRACHEOPHYTA
(vascular plants)

PLANTAE
(plants)

Herbaceous Plants
(herbaceous plants)

Taxonomic hierarchy:

Species	Polygonum aviculare (Knotgrass)
Genus	Polygonum (knotgrass)
Family	POLYGONACEAE (docks and knotgrasses)
Order	CARYOPHYLLALES (pinks, goosefoots and docks)
Subclass	EU-DICOTS (dicotyledonous flowering plants)
Class	MAGNOLIOPSIDA (flowering plants)
Phylum	TRACHEOPHYTA (vascular plants)
Kingdom	PLANTAE (plants)
Domain	Eukaryota (eukaryotes)
Life	BIOTA (living things)

Polygonum aviculare is also a member of:
Herbaceous Plants - herbaceous plants (via Polygonaceae)

NBN

NBN (data.nbn.org.uk) has a distribution map for Polygonum aviculare (Knotgrass)

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

POLYGONACEAE
(docks and knotgrasses)

MAGNOLIOPSIDA
(flowering plants)

TRACHEOPHYTA
(vascular plants)

PLANTAE
(plants)

Eukaryota
(eukaryotes)

BIOTA
(living things)

Literature listed under the following higher taxa may be relevant to Polygonum aviculare (Knotgrass):

Polygonum
(knotgrass)

POLYGONACEAE
(docks and knotgrasses)

MAGNOLIOPSIDA
(flowering plants)

TRACHEOPHYTA
(vascular plants)

PLANTAE
(plants)

Eukaryota
(eukaryotes)

BIOTA
(living things)

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