Centaurea jacea L.
(Brown Knapweed)

Interactions where Centaurea jacea 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 Foreign Golovinomyces cichoracearum a powdery mildew Erysiphales: Erysiphaceae An Introduction to British Powdery Mildews, Ing, B., 1990
 /Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Golovinomyces cichoracearum/Golovinomyces cichoracearuma powdery mildew Foodplant / parasiteForeign /Plantae/Tracheophyta/Magnoliopsida/Asterales/Asteraceae/Centaurea jacea/Centaurea jaceabrown knapweedlive parasitises live
capitulum? capitulum? may contain larva Foreign Acinia corniculata Scarce Knapweed Fly Diptera: Tephritidae Tephritid Flies (Diptera: Tephritidae), White, I.M., 1988
 /Animalia/Arthropoda/Insecta/Diptera/Tephritidae/Acinia corniculata/Acinia corniculatascarce knapweed flylarva Foodplant / internal feederForeign /Plantae/Tracheophyta/Magnoliopsida/Asterales/Asteraceae/Centaurea jacea/Centaurea jaceabrown knapweedcapitulum? larva feeds within capitulum?
capitulum capitulum may contain larva Foreign Chaetorellia jaceae Lesser Golden Knapweed Fly Diptera: Tephritidae Tephritid Flies (Diptera: Tephritidae), White, I.M., 1988
 /Animalia/Arthropoda/Insecta/Diptera/Tephritidae/Chaetorellia jaceae/Chaetorellia jaceaelesser golden knapweed flylarva Foodplant / internal feederForeign /Plantae/Tracheophyta/Magnoliopsida/Asterales/Asteraceae/Centaurea jacea/Centaurea jaceabrown knapweedcapitulum larva feeds within capitulum
capitulum capitulum may contain larva Foreign Chaetostomella cylindrica a gall fly Diptera: Tephritidae Tephritid Flies (Diptera: Tephritidae), White, I.M., 1988
 /Animalia/Arthropoda/Insecta/Diptera/Tephritidae/Chaetostomella cylindrica/Chaetostomella cylindricaa gall flylarva Foodplant / internal feederForeign /Plantae/Tracheophyta/Magnoliopsida/Asterales/Asteraceae/Centaurea jacea/Centaurea jaceabrown knapweedcapitulum larva feeds within capitulum
capitulum capitulum is galled by larva Foreign Urophora jaceana Knapweed Gall-fly Diptera: Tephritidae Tephritid Flies (Diptera: Tephritidae), White, I.M., 1988
 /Animalia/Arthropoda/Insecta/Diptera/Tephritidae/Urophora jaceana/Urophora jaceanaknapweed gall-flylarva Foodplant / gallForeign /Plantae/Tracheophyta/Magnoliopsida/Asterales/Asteraceae/Centaurea jacea/Centaurea jaceabrown knapweedcapitulum larva causes gall of capitulum
capitulum capitulum is galled by larva Foreign Urophora quadrifasciata Four-banded Knapweed Gall-fly Diptera: Tephritidae Tephritid Flies (Diptera: Tephritidae), White, I.M., 1988
 /Animalia/Arthropoda/Insecta/Diptera/Tephritidae/Urophora quadrifasciata/Urophora quadrifasciatafour-banded knapweed gall-flylarva Foodplant / gallForeign /Plantae/Tracheophyta/Magnoliopsida/Asterales/Asteraceae/Centaurea jacea/Centaurea jaceabrown knapweedcapitulum larva causes gall of capitulum
capitulum (live) live capitulum may contain larva Foreign Acanthiophilus helianthi Knapweed Ghost Diptera: Tephritidae Tephritid Flies (Diptera: Tephritidae), White, I.M., 1988
 /Animalia/Arthropoda/Insecta/Diptera/Tephritidae/Acanthiophilus helianthi/Acanthiophilus helianthiknapweed ghostlarva Foodplant / internal feederForeign /Plantae/Tracheophyta/Magnoliopsida/Asterales/Asteraceae/Centaurea jacea/Centaurea jaceabrown knapweedlivecapitulum larva feeds within live capitulum
capitulum (live) live capitulum is galled by larva Isocolus jaceae a gall wasp Hymenoptera: Cynipidae Catalogue of parasitoids and inquilines in galls of Aylacini, Diplolepidini and Pediaspidini (Hym., Cynipidae) in the West Palaearctic, Askew, R.R., Plantard, O., Gomez, J.F., Nieves, M.H. & Nieves-Aldrey, J.L., 2006
 /Animalia/Arthropoda/Insecta/Hymenoptera/Cynipidae/Isocolus jaceae/Isocolus jaceaea gall wasplarva Foodplant / gall /Plantae/Tracheophyta/Magnoliopsida/Asterales/Asteraceae/Centaurea jacea/Centaurea jaceabrown knapweedlivecapitulum larva causes gall of live capitulum
leaf (live) live leaf is spotted by amphigenous, punctiform to effuse colony of Ramularia hyphomycetous anamorph Foreign Ramularia centaureae-jaceae (An Anamorphic Fungus) Capnodiales: Mycosphaerellaceae Monograph of Cercosporella, Ramularia and Allied Genera - Vol II, Braun, U., 1998
 /Fungi/Ascomycota/Dothideomycetes/Capnodiales/Mycosphaerellaceae/Ramularia centaureae-jaceae/Ramularia centaureae-jaceae(an anamorphic fungus)amphigenous, punctiform to effusecolonyRamularia hyphomycetous anamorph Foodplant / spot causerForeign /Plantae/Tracheophyta/Magnoliopsida/Asterales/Asteraceae/Centaurea jacea/Centaurea jaceabrown knapweedliveleaf amphigenous, punctiform to effuse colony of Ramularia hyphomycetous anamorph causes spots on live leaf
leaf (live) live leaf is spotted by usually hypophyllous colony of Ramularia hyphomycetous anamorph Foreign Ramularia triboutiana an anamorphic fungus Capnodiales: Mycosphaerellaceae Monograph of Cercosporella, Ramularia and Allied Genera - Vol II, Braun, U., 1998
 /Fungi/Ascomycota/Dothideomycetes/Capnodiales/Mycosphaerellaceae/Ramularia triboutiana/Ramularia triboutianaan anamorphic fungususually hypophyllouscolonyRamularia hyphomycetous anamorph Foodplant / spot causerForeign /Plantae/Tracheophyta/Magnoliopsida/Asterales/Asteraceae/Centaurea jacea/Centaurea jaceabrown knapweedliveleaf usually hypophyllous colony of Ramularia hyphomycetous anamorph causes spots on live leaf
stem stem may contain larva Foreign Melanagromyza dettmeri a leaf-mining fly Diptera: Agromyzidae The Agromyzidae (Diptera) of Fennoscandia and Denmark, Spencer, K.A., 1976
 /Animalia/Arthropoda/Insecta/Diptera/Agromyzidae/Melanagromyza dettmeri/Melanagromyza dettmeria leaf-mining flylarva Foodplant / internal feederForeign /Plantae/Tracheophyta/Magnoliopsida/Asterales/Asteraceae/Centaurea jacea/Centaurea jaceabrown knapweedstem larva feeds within stem
stem (dead) dead stem is decayed by pseudothecium Nodulosphaeria jaceae an ascomycete Pleosporales: Phaeosphaeriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Phaeosphaeriaceae/Nodulosphaeria jaceae/Nodulosphaeria jaceaean ascomycetepseudothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Asterales/Asteraceae/Centaurea jacea/Centaurea jaceabrown knapweeddeadstem pseudothecium is saprobic on dead stem
stem (live) live stem is galled by larva Phanacis centaureae a gall wasp Hymenoptera: Cynipidae Catalogue of parasitoids and inquilines in galls of Aylacini, Diplolepidini and Pediaspidini (Hym., Cynipidae) in the West Palaearctic, Askew, R.R., Plantard, O., Gomez, J.F., Nieves, M.H. & Nieves-Aldrey, J.L., 2006
 /Animalia/Arthropoda/Insecta/Hymenoptera/Cynipidae/Phanacis centaureae/Phanacis centaureaea gall wasplarva Foodplant / gall /Plantae/Tracheophyta/Magnoliopsida/Asterales/Asteraceae/Centaurea jacea/Centaurea jaceabrown knapweedlivestem larva causes gall of live stem

Author & YearTitleSource
Askew, R.R., Plantard, O., Gomez, J.F., Nieves, M.H. & Nieves-Aldrey, J.L., 2006Catalogue of parasitoids and inquilines in galls of Aylacini, Diplolepidini and Pediaspidini (Hym., Cynipidae) in the West PalaearcticZootaxa 1301.
Braun, U., 1998Monograph of Cercosporella, Ramularia and Allied Genera - Vol IIPhytopathogenic Hyphomycetes, 2, 493pp, IHW-Verlag
Ellis, M.B. & J.P., 1997Microfungi on Land Plants: An Identification Handbook2nd (New Enlarged) edition, 868pp, The Richmond Publishing Co. Ltd
Ing, B., 1990An Introduction to British Powdery MildewsMycologist Vol 4 (1) et seq.
Spencer, K.A., 1976The Agromyzidae (Diptera) of Fennoscandia and DenmarkFauna Entomologica Scandinavica, 5 (parts 1 and 2), 606pp, Scandinavian Science Press
White, I.M., 1988Tephritid Flies (Diptera: Tephritidae)Handbooks for the Identification of British Insects , Vol 10. Part 5a, 134pp, The Royal Entomological Society of London

Centaurea jacea (Brown Knapweed) may also be included in 'fed on by' relations listed under the following higher taxa:

Taxonomic hierarchy:
SpeciesCentaurea jacea (Brown Knapweed)
GenusCentaurea (knapweeds and star-thistles)
TribeCardueae (“thistles”)
SubfamilyLACTUCOIDEAE (“dandelions”)
FamilyASTERACEAE (daisies, dandelions and thistles, composite)
OrderASTERALES (daisies, dandelions, thistles and bell flowers)
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 Centaurea jacea (Brown Knapweed)

Centaurea jacea (Brown Knapweed) may be included in identification literature listed under the following higher taxa:

Literature listed under the following higher taxa may be relevant to Centaurea jacea (Brown Knapweed):

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