Juglans regia L.
(Walnut)

Interactions where Juglans regia 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
has sap sucked by UK/Ireland Chromaphis juglandicola Walnut Aphid Hemiptera: Aphididae /Animalia/Arthropoda/Insecta/Hemiptera/Aphididae/Chromaphis juglandicola/Chromaphis juglandicolawalnut aphid Foodplant / sap suckerUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnut sucks sap of
has sap sucked by UK/Ireland Panaphis juglandis Large Walnut Aphid Hemiptera: Aphididae /Animalia/Arthropoda/Insecta/Hemiptera/Aphididae/Panaphis juglandis/Panaphis juglandislarge walnut aphid Foodplant / sap suckerUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnut sucks sap of
may be infected and damaged by UK/Ireland Armillaria honey fungi Agaricales: Physalacriaceae British Parasitic Fungi, Moore, W.C., 1959
 /Fungi/Basidiomycota/Agaricomycetes/Agaricales/Physalacriaceae/Armillaria/Armillariahoney fungi Foodplant / pathogenUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnut infects and damages
bark (dead) dead bark is decayed by covered pycnidium of Phomopsis coelomycetous anamorph UK/Ireland Diaporthe juglandina a pyrenomycete Diaporthales: Diaporthaceae British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidia, Grove, W.B., 1935
 /Fungi/Ascomycota/Sordariomycetes/Diaporthales/Diaporthaceae/Diaporthe juglandina/Diaporthe juglandinaa pyrenomycetecoveredpycnidiumPhomopsis coelomycetous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutdeadbark (8)covered pycnidium of Phomopsis coelomycetous anamorph is saprobic on dead bark
branch (large) (live) live branch (large) may be infected and damaged by erumpned, black acervulus of melanconium coelomycetous anamorph Foreign Juglanconis juglandina Black Pustular Blight Of Walnut - Causative Agent Diaporthales Conidiogenesis and morphology of Melanconium juglandinum, Belisario, A. & Onofri, S., 1995
 /Fungi/Ascomycota/Sordariomycetes/Diaporthales/Juglanconis juglandina/Juglanconis juglandinablack pustular blight of walnut - causative agenterumpned, blackacervulusmelanconium coelomycetous anamorph Foodplant / pathogenForeign /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutlivebranch (large) erumpned, black acervulus of melanconium coelomycetous anamorph infects and damages live branch (large)
branch (small) (live) live branch (small) may be infected and damaged by erumpned, black acervulus of melanconium coelomycetous anamorph Foreign Juglanconis juglandina Black Pustular Blight Of Walnut - Causative Agent Diaporthales Conidiogenesis and morphology of Melanconium juglandinum, Belisario, A. & Onofri, S., 1995
 /Fungi/Ascomycota/Sordariomycetes/Diaporthales/Juglanconis juglandina/Juglanconis juglandinablack pustular blight of walnut - causative agenterumpned, blackacervulusmelanconium coelomycetous anamorph Foodplant / pathogenForeign /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutlivebranch (small) erumpned, black acervulus of melanconium coelomycetous anamorph infects and damages live branch (small)
branch wood (dry, hard, decorticate) dry, hard, decorticate branch wood is decayed by superficial pycnidium of Aposphaeria coelomycetous anamorph UK/Ireland Melanomma pulvis-pyrius an ascomycete Pleosporales: Melanommataceae British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidia, Grove, W.B., 1935
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Melanommataceae/Melanomma pulvis-pyrius/Melanomma pulvis-pyriusan ascomycetesuperficialpycnidiumAposphaeria coelomycetous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutdry, hard, decorticatebranch wood (9-5)superficial pycnidium of Aposphaeria coelomycetous anamorph is saprobic on dry, hard, decorticate branch wood
branch branch may be infected and damaged by Tubercularia anamorph Nectria cinnabarina Coral Spot, Coral-spot Fungus Hypocreales: Nectriaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
 /Fungi/Ascomycota/Sordariomycetes/Hypocreales/Nectriaceae/Nectria cinnabarina/Nectria cinnabarinacoral spot, coral-spot fungusTubercularia anamorph Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutbranch (1-12)Tubercularia anamorph infects and damages branch
graft graft is parasitised by colony of Chalaropsis dematiaceous anamorph UK/Ireland Ceratocystis paradoxa an ascomycete Microascales: Ceratocystidaceae Fungi of the South East England, Dennis, R.W.G., 1995
British Parasitic Fungi, Moore, W.C., 1959
 /Fungi/Ascomycota/Sordariomycetes/Microascales/Ceratocystidaceae/Ceratocystis paradoxa/Ceratocystis paradoxaan ascomycetecolonyChalaropsis dematiaceous anamorph Foodplant / parasiteUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutgraft colony of Chalaropsis dematiaceous anamorph parasitises graft
husk husk is decayed by colony of Chalaropsis dematiaceous anamorph UK/Ireland Ceratocystis paradoxa an ascomycete Microascales: Ceratocystidaceae British Parasitic Fungi, Moore, W.C., 1959
 /Fungi/Ascomycota/Sordariomycetes/Microascales/Ceratocystidaceae/Ceratocystis paradoxa/Ceratocystis paradoxaan ascomycetecolonyChalaropsis dematiaceous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnuthusk colony of Chalaropsis dematiaceous anamorph is saprobic on husk
leaf leaf has leaves shot holed by epiphyllous, almost entirely immersed pycnidium of Ascochyta coelomycetous anamorph UK/Ireland Ascochyta juglandis a coelomycete Pleosporales British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidia, Grove, W.B., 1935
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Ascochyta juglandis/Ascochyta juglandisa coelomyceteepiphyllous, almost entirely immersedpycnidiumAscochyta coelomycetous anamorph Foodplant / shot hole causerUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutleaf epiphyllous, almost entirely immersed pycnidium of Ascochyta coelomycetous anamorph causes shot holes on leaf
leaf leaf is spotted by epiphyllous, almost entirely immersed pycnidium of Ascochyta coelomycetous anamorph UK/Ireland Ascochyta juglandis a coelomycete Pleosporales British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidia, Grove, W.B., 1935
 /Fungi/Ascomycota/Dothideomycetes/Pleosporales/Ascochyta juglandis/Ascochyta juglandisa coelomyceteepiphyllous, almost entirely immersedpycnidiumAscochyta coelomycetous anamorph Foodplant / spot causerUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutleaf epiphyllous, almost entirely immersed pycnidium of Ascochyta coelomycetous anamorph causes spots on leaf
leaf (live) live leaf is galled by Aceria erinea a gall mite Trombidiformes: Eriophyidae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Provisional Keys to British Plant Galls, Stubbs, F.B. (Editor), 1986
 /Animalia/Arthropoda/Arachnida/Trombidiformes/Eriophyidae/Aceria erinea/Aceria erineaa gall mite Foodplant / gall /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutliveleaf causes gall of live leaf
leaf (live) live leaf is spotted by hypophyllous, pulvinate, erumpent acervulus of Microstroma coelomycetous anamorph UK/Ireland Microstroma juglandis a ustilaginomycete Microstromatales Fungi of the South East England, Dennis, R.W.G., 1995
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
 /Fungi/Basidiomycota/Ustilaginomycetes/Microstromatales/Microstroma juglandis/Microstroma juglandisa ustilaginomycetehypophyllous, pulvinate, erumpentacervulusMicrostroma coelomycetous anamorph Foodplant / spot causerUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutliveleaf (7)hypophyllous, pulvinate, erumpent acervulus of Microstroma coelomycetous anamorph causes spots on live leaf
trunk (base) (live) live trunk (base) is parasitised by fruitbody Minor Vanderbylia fraxinea a bracket fungus Polyporales: Polyporaceae Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
 /Fungi/Basidiomycota/Agaricomycetes/Polyporales/Polyporaceae/Vanderbylia fraxinea/Vanderbylia fraxineaa bracket fungusfruitbody Foodplant / parasite /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutlivetrunk (base)Minor fruitbody parasitises live trunk (base)
trunk (base) (live) live trunk (base) is decayed by fruitbody Minor Vanderbylia fraxinea a bracket fungus Polyporales: Polyporaceae Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
 /Fungi/Basidiomycota/Agaricomycetes/Polyporales/Polyporaceae/Vanderbylia fraxinea/Vanderbylia fraxineaa bracket fungusfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutlivetrunk (base)Minor fruitbody is saprobic on live trunk (base)
trunk (dead, fallen) dead, fallen trunk is decayed by stalked, clustered basidiocarp Phleogena faginea Fenugreek Stalkball Atractiellales: Phleogenaceae Cross Dressers: Cyphelloid and other curious fungi, Weightman, J., 2007
 /Fungi/Basidiomycota/Pucciniomycetes/Atractiellales/Phleogenaceae/Phleogena faginea/Phleogena fagineafenugreek stalkballstalked, clusteredbasidiocarp Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutdead, fallentrunk (10-2)stalked, clustered basidiocarp is saprobic on dead, fallen trunk
trunk (dead) dead trunk is decayed by fruitbody Minor Ganoderma applanatum Artist’s Bracket Polyporales: Ganodermataceae Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
 /Fungi/Basidiomycota/Agaricomycetes/Polyporales/Ganodermataceae/Ganoderma applanatum/Ganoderma applanatumartist's bracketfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutdeadtrunkMinor fruitbody is saprobic on dead trunk
trunk (live, damaged) live, damaged trunk is decayed by stalked, clustered basidiocarp Phleogena faginea Fenugreek Stalkball Atractiellales: Phleogenaceae Cross Dressers: Cyphelloid and other curious fungi, Weightman, J., 2007
 /Fungi/Basidiomycota/Pucciniomycetes/Atractiellales/Phleogenaceae/Phleogena faginea/Phleogena fagineafenugreek stalkballstalked, clusteredbasidiocarp Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutlive, damagedtrunk (10-2)stalked, clustered basidiocarp is saprobic on live, damaged trunk
trunk (live) live trunk is parasitised by fruitbody UK/IrelandMajor Inonotus hispidus Shaggy Bracket Hymenochaetales: Hymenochaetaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Unusual hosts for some common British fungi, Reid, D.A., 1978
 /Fungi/Basidiomycota/Agaricomycetes/Hymenochaetales/Hymenochaetaceae/Inonotus hispidus/Inonotus hispidusshaggy bracketfruitbody Foodplant / parasiteUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutlivetrunkMajor fruitbody parasitises live trunk
trunk (live) live trunk is parasitised by fruitbody Foreign Phellinus alni (A Bracket Fungus) Hymenochaetales: Hymenochaetaceae Phellinus igniarius and its closest relatives in Europe, Fischer, M., 1995
 /Fungi/Basidiomycota/Agaricomycetes/Hymenochaetales/Hymenochaetaceae/Phellinus alni/Phellinus alni(a bracket fungus)fruitbody Foodplant / parasiteForeign /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutlivetrunk fruitbody parasitises live trunk
trunk (live) live trunk is parasitised by fruitbody Minor Ganoderma applanatum Artist’s Bracket Polyporales: Ganodermataceae Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
 /Fungi/Basidiomycota/Agaricomycetes/Polyporales/Ganodermataceae/Ganoderma applanatum/Ganoderma applanatumartist's bracketfruitbody Foodplant / parasite /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutlivetrunkMinor fruitbody parasitises live trunk
twig twig is decayed by immersed, erumpent, conical, surrounded by laciniae, verruciform, paucilocellate, 1-2mm broad stroma of Fusicoccum coelomycetous anamorph UK/Ireland Fusicoccum juglandinum a stromatic coelomycete Botryosphaeriales: Botryosphaeriaceae British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidia, Grove, W.B., 1935
 /Fungi/Ascomycota/Dothideomycetes/Botryosphaeriales/Botryosphaeriaceae/Fusicoccum juglandinum/Fusicoccum juglandinuma stromatic coelomyceteimmersed, erumpent, conical, surrounded by laciniae, verruciform, paucilocellate, 1-2mm broadstromaFusicoccum coelomycetous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnuttwig immersed, erumpent, conical, surrounded by laciniae, verruciform, paucilocellate, 1-2mm broad stroma of Fusicoccum coelomycetous anamorph is saprobic on twig
twig twig may be infected and damaged by Tubercularia anamorph Nectria cinnabarina Coral Spot, Coral-spot Fungus Hypocreales: Nectriaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
 /Fungi/Ascomycota/Sordariomycetes/Hypocreales/Nectriaceae/Nectria cinnabarina/Nectria cinnabarinacoral spot, coral-spot fungusTubercularia anamorph Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnuttwig (1-12)Tubercularia anamorph infects and damages twig
twig (dead) dead twig is decayed by gregarious, covered, plurilocular, stroma of Cytospora coelomycetous anamorph UK/Ireland Cytospora juglandina a stromatic coelomycete Diaporthales: Valsaceae British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidia, Grove, W.B., 1935
 /Fungi/Ascomycota/Sordariomycetes/Diaporthales/Valsaceae/Cytospora juglandina/Cytospora juglandinaa stromatic coelomycetegregarious, covered, plurilocular,stromaCytospora coelomycetous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutdeadtwig (5)gregarious, covered, plurilocular, stroma of Cytospora coelomycetous anamorph is saprobic on dead twig
wood wood is decayed by fruitbody UK/Ireland Auricularia auricula-judae Jelly Ear, The Jew’s Ear, Judas’s Ear Fungus Auriculariales: Auriculariaceae Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
Unusual hosts for some common British fungi, Reid, D.A., 1978
 /Fungi/Basidiomycota/Agaricomycetes/Auriculariales/Auriculariaceae/Auricularia auricula-judae/Auricularia auricula-judaejelly ear, The Jew’s ear, Judas’s ear fungusfruitbody Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutwood fruitbody is saprobic on wood
wood (dead, decayed) dead, decayed wood is decayed by fruitbody Minor Phanerochaete sordida a resupinate fungus Polyporales: Phanerochaetaceae Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
 /Fungi/Basidiomycota/Agaricomycetes/Polyporales/Phanerochaetaceae/Phanerochaete sordida/Phanerochaete sordidaa resupinate fungusfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutdead, decayedwoodMinor fruitbody is saprobic on dead, decayed wood
wood (dead, white-rotten) dead, white-rotten wood is decayed by bracket UK/IrelandMinor Daedaleopsis confragosa Blushing Bracket Polyporales: Polyporaceae Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
Attempts at active protection of Inonotus obliquus by inoculating birches with its mycelium, Pietka, J. & Grzywacz, A., 2006
 /Fungi/Basidiomycota/Agaricomycetes/Polyporales/Polyporaceae/Daedaleopsis confragosa/Daedaleopsis confragosablushing bracketbracket Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Fagales/Juglandaceae/Juglans regia/Juglans regiawalnutdead, white-rottenwoodMinor bracket is saprobic on dead, white-rotten wood

Author & YearTitleSource
Belisario, A. & Onofri, S., 1995Conidiogenesis and morphology of Melanconium juglandinumMycol. Res. Vol 99 (9): 1059-1062.
Buczacki, S. & Harris, K., 1998Pests, Diseases & Disorders of Garden PlantsCollins Photoguide, 2nd edition edition, Collins
Dennis, R.W.G., 1995Fungi of the South East England383pp, Royal Botanic Gardens, Kew
Ellis, M.B. & J.P., 1997Microfungi on Land Plants: An Identification Handbook2nd (New Enlarged) edition, 868pp, The Richmond Publishing Co. Ltd
Fischer, M., 1995Phellinus igniarius and its closest relatives in EuropeMycol. Res. Vol 99 (6): 735-744.
Grove, W.B., 1935British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidiaVol I, 488pp, Cambridge University Press
Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005Checklist of the British and Irish Basidiomycota517pp, Royal Botanic Gardens, Kew
Moore, W.C., 1959British Parasitic Fungi430pp, Cambridge University Press
Pietka, J. & Grzywacz, A., 2006Attempts at active protection of Inonotus obliquus by inoculating birches with its myceliumActa Mycologica Vol 41 (2): 305-312.
Reid, D.A., 1978Unusual hosts for some common British fungiBull. Br. mycol. Soc. Vol 12 (2): 87-89.
Stubbs, F.B. (Editor), 1986Provisional Keys to British Plant Galls95pp, British Plant Gall Society (BPGS)
Weightman, J., 2007Cross Dressers: Cyphelloid and other curious fungiField Mycology Vol 8 (3): 80-83.

Juglans regia (Walnut) may also be included in 'fed on by' relations listed under the following higher taxa:

Taxonomic hierarchy:
SpeciesJuglans regia (Walnut)
GenusJuglans (walnuts)
FamilyJUGLANDACEAE (walnuts, hickories, wingnuts)
OrderFAGALES (forest trees)
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 Juglans regia (Walnut)

Juglans regia (Walnut) may be included in identification literature listed under the following higher taxa:

Literature listed under the following higher taxa may be relevant to Juglans regia (Walnut):

BioImagesBioImages (www.bioimages.org.uk) has 6 images of Juglans regia (Walnut)
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