Pyrus L.
(pears)

Interactions where Pyrus 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
is associate of Magdalis cerasi a weevil Coleoptera: Curculionidae Host Plants of British Beetles: A List of Recorded Associations, Bullock, J.A., 1992
/Animalia/Arthropoda/Insecta/Coleoptera/Curculionidae/Magdalis cerasi/Magdalis cerasia weevil Plant / associate /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspears is associated with
has sap sucked by Foreign Eulecanium excrescens Wisteria Scale Hemiptera: Coccidae CSL Pest Risk Analysis for Eulecanium excrescens, MacLeod, A. & Matthews, L., 2005
/Animalia/Arthropoda/Insecta/Hemiptera/Coccidae/Eulecanium excrescens/Eulecanium excrescenswisteria scale Foodplant / sap suckerForeign /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspears sucks sap of
(dead) dead is decayed by not crowded, pustular to subdepressed, covered, then disc erumpent, dingy then blackish stroma of Cytospora coelomycetous anamorph UK/IrelandQuestionable Cytospora rubescens f. crataegi 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 rubescens f. crataegi/Cytospora rubescens f. crataegia stromatic coelomycetenot crowded, pustular to subdepressed, covered, then disc erumpent, dingy then blackishstromaCytospora coelomycetous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspears?dead not crowded, pustular to subdepressed, covered, then disc erumpent, dingy then blackish stroma of Cytospora coelomycetous anamorph is saprobic on dead
bark (cankered) cankered bark may be infected and damaged by erumpent, clustered apothecium Pezicula corticola a discomycete Helotiales: Dermateaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Leotiomycetes/Helotiales/Dermateaceae/Pezicula corticola/Pezicula corticolaa discomyceteerumpent, clusteredapothecium Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearscankeredbark erumpent, clustered apothecium infects and damages cankered bark
bark (cankered) cankered bark may be infected and damaged by conidioma of Cryptosporiopsis coelomycetous anamorph Pezicula corticola a discomycete Helotiales: Dermateaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Leotiomycetes/Helotiales/Dermateaceae/Pezicula corticola/Pezicula corticolaa discomyceteconidiomaCryptosporiopsis coelomycetous anamorph Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearscankeredbark conidioma of Cryptosporiopsis coelomycetous anamorph infects and damages cankered bark
branch (old) (thickly encrusted) thickly encrusted branch (old) has sap sucked by Foreign Pseudaulacaspis pentagona White Peach Scale Hemiptera: Diaspididae CSL Pest Risk Analysis for Pseudaulacaspis pentagona, MacLeod, A., 2007
/Animalia/Arthropoda/Insecta/Hemiptera/Diaspididae/Pseudaulacaspis pentagona/Pseudaulacaspis pentagonawhite peach scale Foodplant / sap suckerForeign /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsthickly encrustedbranch (old) sucks sap of thickly encrusted branch (old)
branch branch is decayed by subgregarious to densely scattered, covered then erumpent, blackish grey with paler roundish flat disc stroma of Cytospora coelomycetous anamorph UK/Ireland Cytospora populina a valsoid pyrenomycete Diaporthales: Valsaceae British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidia, Grove, W.B., 1935
/Fungi/Ascomycota/Sordariomycetes/Diaporthales/Valsaceae/Cytospora populina/Cytospora populinaa valsoid pyrenomycetesubgregarious to densely scattered, covered then erumpent, blackish grey with paler roundish flat discstromaCytospora coelomycetous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsbranch (10-5)subgregarious to densely scattered, covered then erumpent, blackish grey with paler roundish flat disc stroma of Cytospora coelomycetous anamorph is saprobic on branch
branch (cankered) cankered branch may be infected and damaged by Neonectria galligena Apple and Pear Canker Hypocreales: Nectriaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Fungi/Ascomycota/Sordariomycetes/Hypocreales/Nectriaceae/Neonectria galligena/Neonectria galligenaapple and pear canker Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearscankeredbranch infects and damages cankered branch
branch (dead, corticate) dead, corticate branch is decayed by erumpent stroma Minor Annulohypoxylon multiforme Birch Woodwart Xylariales: Xylariaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Xylariales/Xylariaceae/Annulohypoxylon multiforme/Annulohypoxylon multiformebirch woodwarterumpentstroma Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsdead, corticatebranchMinor (10-4)erumpent stroma is saprobic on dead, corticate branch
branch (dead, decorticate, attached) dead, decorticate, attached branch is decayed by fruitbody Foreign Vuilleminia cystidiata a resupinate basidiomycete Corticiales: Corticiaceae British Vuilleminia species, Morris, I. & Roberts, P., 1997
/Fungi/Basidiomycota/Agaricomycetes/Corticiales/Corticiaceae/Vuilleminia cystidiata/Vuilleminia cystidiataa resupinate basidiomycetefruitbody Foodplant / saprobeForeign /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsdead, decorticate, attachedbranch fruitbody is saprobic on dead, decorticate, attached branch
branch (dead, decorticate) dead, decorticate branch is decayed by effuse stroma Minor Annulohypoxylon multiforme Birch Woodwart Xylariales: Xylariaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Xylariales/Xylariaceae/Annulohypoxylon multiforme/Annulohypoxylon multiformebirch woodwarteffusestroma Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsdead, decorticatebranchMinor (10-4)effuse stroma is saprobic on dead, decorticate branch
branch (dead) dead branch is decayed by erumpent stroma Potebniamyces pyri a discomycete Rhytismatales: Cryptomycetaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Leotiomycetes/Rhytismatales/Cryptomycetaceae/Potebniamyces pyri/Potebniamyces pyria discomyceteerumpentstroma Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsdeadbranch (9-11)erumpent stroma is saprobic on dead branch
branch (dead) dead branch is decayed by conidioma of Phacidiopsis anamorph Potebniamyces pyri a discomycete Rhytismatales: Cryptomycetaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Leotiomycetes/Rhytismatales/Cryptomycetaceae/Potebniamyces pyri/Potebniamyces pyria discomyceteconidiomaPhacidiopsis anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsdeadbranch conidioma of Phacidiopsis anamorph is saprobic on dead branch
branch (dead) dead branch is decayed by immersed, stromatic, solitary or in small groups perithecium Potebniamyces pyri a discomycete Rhytismatales: Cryptomycetaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Leotiomycetes/Rhytismatales/Cryptomycetaceae/Potebniamyces pyri/Potebniamyces pyria discomyceteimmersed, stromatic, solitary or in small groupsperithecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsdeadbranch (9-11)immersed, stromatic, solitary or in small groups perithecium is saprobic on dead branch
branch (dead) dead branch is decayed by Nodulisporium anamorph Minor Annulohypoxylon multiforme Birch Woodwart Xylariales: Xylariaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Xylariales/Xylariaceae/Annulohypoxylon multiforme/Annulohypoxylon multiformebirch woodwartNodulisporium anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/PyruspearsdeadbranchMinor (10-4)Nodulisporium anamorph is saprobic on dead branch
branch (live, decorticate) live, decorticate branch is decayed by fruitbody Foreign Vuilleminia cystidiata a resupinate basidiomycete Corticiales: Corticiaceae British Vuilleminia species, Morris, I. & Roberts, P., 1997
/Fungi/Basidiomycota/Agaricomycetes/Corticiales/Corticiaceae/Vuilleminia cystidiata/Vuilleminia cystidiataa resupinate basidiomycetefruitbody Foodplant / saprobeForeign /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearslive, decorticatebranch fruitbody is saprobic on live, decorticate branch
branch (live) live branch is decayed by densely encrusting Lepidosaphes ulmi Mussel Scale Hemiptera: Coccidae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Animalia/Arthropoda/Insecta/Hemiptera/Coccidae/Lepidosaphes ulmi/Lepidosaphes ulmimussel scaledensely encrusting Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearslivebranch densely encrusting is saprobic on live branch
bud (vegetative) bud (vegetative) may contain larva Temnocerus longiceps a leafroller weevil Coleoptera: Rhynchitidae Orthocerous Weevils, Morris, M.G., 1990
/Animalia/Arthropoda/Insecta/Coleoptera/Rhynchitidae/Temnocerus longiceps/Temnocerus longicepsa leafroller weevillarva Foodplant / internal feeder /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsbud (vegetative) larva feeds within bud (vegetative)
bud scale (live) live bud scale may be infected and damaged by colony of Fusicladium dematiaceous anamorph Venturia pyrina Pear Scab - causative organism Venturiales: Venturiaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Venturiales/Venturiaceae/Venturia pyrina/Venturia pyrinapear scab (causative organism)colonyFusicladium dematiaceous anamorph Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearslivebud scale colony of Fusicladium dematiaceous anamorph infects and damages live bud scale
cambium of dead twig (below) below cambium of dead twig is mined by larva UK/Ireland Magdalis barbicornis Pear Weevil Coleoptera: Curculionidae True Weevils (Part I): Family Curculionidae, subfamilies Raymondionyminae to Smicronychinae, Morris, M.G., 2002
/Animalia/Arthropoda/Insecta/Coleoptera/Curculionidae/Magdalis barbicornis/Magdalis barbicornispear weevillarva Foodplant / minerUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsbelowcambium of dead twig larva mines below cambium of dead twig
cambium cambium may contain larva Scolytus mali Large Fruit Bark Beetle Coleoptera: Curculionidae Host Plants of British Beetles: A List of Recorded Associations, Bullock, J.A., 1992
/Animalia/Arthropoda/Insecta/Coleoptera/Curculionidae/Scolytus mali/Scolytus malilarge fruit bark beetlelarva Foodplant / internal feeder /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearscambium larva feeds within cambium
cambium cambium may contain larva Scolytus rugulosus Fruit Bark Beetle, Shothole Borer (Small Fruit Bark Beetle) Coleoptera: Curculionidae Host Plants of British Beetles: A List of Recorded Associations, Bullock, J.A., 1992
/Animalia/Arthropoda/Insecta/Coleoptera/Curculionidae/Scolytus rugulosus/Scolytus rugulosusfruit bark beetle, shothole borer (small fruit bark beetle)larva Foodplant / internal feeder /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearscambium larva feeds within cambium
flower (live) live flower may be infected and damaged by colony of Fusicladium dematiaceous anamorph Venturia pyrina Pear Scab - causative organism Venturiales: Venturiaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Venturiales/Venturiaceae/Venturia pyrina/Venturia pyrinapear scab (causative organism)colonyFusicladium dematiaceous anamorph Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsliveflower colony of Fusicladium dematiaceous anamorph infects and damages live flower
fruit (young) (blackened, distorted, prematurely falling) blackened, distorted, prematurely falling fruit (young) may contain communal larva Contarinia pyrivora Pear Midge Diptera: Cecidomyiidae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Provisional Keys to British Plant Galls, Stubbs, F.B. (Editor), 1986
/Animalia/Arthropoda/Insecta/Diptera/Cecidomyiidae/Contarinia pyrivora/Contarinia pyrivorapear midgecommunallarva Foodplant / internal feeder /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsblackened, distorted, prematurely fallingfruit (young) communal larva feeds within blackened, distorted, prematurely falling fruit (young)
fruit (live, distorted) live, distorted fruit may be infected and damaged by colony of Fusicladium dematiaceous anamorph Venturia pyrina Pear Scab - causative organism Venturiales: Venturiaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Venturiales/Venturiaceae/Venturia pyrina/Venturia pyrinapear scab (causative organism)colonyFusicladium dematiaceous anamorph Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearslive, distortedfruit colony of Fusicladium dematiaceous anamorph infects and damages live, distorted fruit
fruit (young, swollen, prematurely falling) young, swollen, prematurely falling fruit is galled by communal larva Contarinia pyrivora Pear Midge Diptera: Cecidomyiidae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Provisional Keys to British Plant Galls, Stubbs, F.B. (Editor), 1986
/Animalia/Arthropoda/Insecta/Diptera/Cecidomyiidae/Contarinia pyrivora/Contarinia pyrivorapear midgecommunallarva Foodplant / gall /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsyoung, swollen, prematurely fallingfruit communal larva causes gall of young, swollen, prematurely falling fruit
leaf leaf is grazed by epiphyllous larva Major Caliroa cerasi Pear and Cherry Slug Sawfly Hymenoptera: Tenthredinidae Hymenoptera: 2. Symphyta. Section (b), Benson, R.B., 1952
Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Animalia/Arthropoda/Insecta/Hymenoptera/Tenthredinidae/Caliroa cerasi/Caliroa cerasipear and cherry slug sawflyepiphyllouslarva Foodplant / open feeder /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/PyruspearsleafMajor (6-9)epiphyllous larva grazes on leaf
leaf leaf is grazed by larva Cladius compressicornis a sawfly Hymenoptera: Tenthredinidae Hymenoptera: 2. Symphyta. Section (c), Benson, R.B., 1958
/Animalia/Arthropoda/Insecta/Hymenoptera/Tenthredinidae/Cladius compressicornis/Cladius compressicornisa sawflylarva Foodplant / open feeder /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsleaf larva grazes on leaf
leaf (dead, fallen, overwintered, rotting) dead, fallen, overwintered, rotting leaf is decayed by immersed pseudothecium Venturia pyrina Pear Scab - causative organism Venturiales: Venturiaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Venturiales/Venturiaceae/Venturia pyrina/Venturia pyrinapear scab (causative organism)immersedpseudothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsdead, fallen, overwintered, rottingleaf immersed pseudothecium is saprobic on dead, fallen, overwintered, rotting leaf
leaf (live, blistered) live, blistered leaf is galled by infection Taphrina bullata a tongue fungus Taphrinales: Taphrinaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Taphrinomycetes/Taphrinales/Taphrinaceae/Taphrina bullata/Taphrina bullataa tongue fungusinfection Foodplant / gall /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearslive, blisteredleaf infection causes gall of live, blistered leaf
leaf (live) live leaf is galled by Major Eriophyes pyri Pear Leaf Bister 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/Eriophyes pyri/Eriophyes pyripear leaf bister mite Foodplant / gall /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/PyruspearsliveleafMajor causes gall of live leaf
leaf (live) live leaf is galled by larva Dasineura pyri a gall midge Diptera: Cecidomyiidae Provisional Keys to British Plant Galls, Stubbs, F.B. (Editor), 1986
/Animalia/Arthropoda/Insecta/Diptera/Cecidomyiidae/Dasineura pyri/Dasineura pyria gall midgelarva Foodplant / gall /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsliveleaf larva causes gall of live leaf
leaf (live) live leaf is rolled by larva Dasineura pyri a gall midge Diptera: Cecidomyiidae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Animalia/Arthropoda/Insecta/Diptera/Cecidomyiidae/Dasineura pyri/Dasineura pyria gall midgelarva Foodplant / roller /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsliveleaf larva rolls live leaf
leaf (live) live leaf is spotted by epiphyllous, immersed pycnidium of Phoma coelomycetous anamorph Mycosphaerella pomi an ascomycete Capnodiales: Mycosphaerellaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Capnodiales/Mycosphaerellaceae/Mycosphaerella pomi/Mycosphaerella pomian ascomyceteepiphyllous, immersedpycnidiumPhoma coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsliveleaf (8-11)epiphyllous, immersed pycnidium of Phoma coelomycetous anamorph causes spots on live leaf
leaf (live) live leaf is spotted by pycnidium of Phoma coelomycetous anamorph Phoma prunicola Apple and Pear Leaf Spot Pleosporales Phoma prunicola (Opiz) Wollenw. & Hochapf., Morgan-Jones, G., 1967
/Fungi/Ascomycota/Dothideomycetes/Pleosporales/Phoma prunicola/Phoma prunicolaapple and pear leaf spotpycnidiumPhoma coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsliveleaf pycnidium of Phoma coelomycetous anamorph causes spots on live leaf
leaf (live) live leaf may be infected and damaged by colony of Fusicladium dematiaceous anamorph Venturia pyrina Pear Scab - causative organism Venturiales: Venturiaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Venturiales/Venturiaceae/Venturia pyrina/Venturia pyrinapear scab (causative organism)colonyFusicladium dematiaceous anamorph Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsliveleaf colony of Fusicladium dematiaceous anamorph infects and damages live leaf
leaf (live) live leaf is galled by mostly hypophyllous aecium Foreign Gymnosporangium asiaticum Japanese Pear Rust Pucciniales: Pucciniaceae Gymnosporangium asiaticum Miyabe ex Yamada, Laundon, G., 1977
/Fungi/Basidiomycota/Pucciniomycetes/Pucciniales/Pucciniaceae/Gymnosporangium asiaticum/Gymnosporangium asiaticumJapanese pear rustmostly hypophyllousaecium Foodplant / gallForeign /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsliveleaf mostly hypophyllous aecium causes gall of live leaf
leaf (live) live leaf is parasitised by epiphyllous pycnium Foreign Gymnosporangium asiaticum Japanese Pear Rust Pucciniales: Pucciniaceae Gymnosporangium asiaticum Miyabe ex Yamada, Laundon, G., 1977
/Fungi/Basidiomycota/Pucciniomycetes/Pucciniales/Pucciniaceae/Gymnosporangium asiaticum/Gymnosporangium asiaticumJapanese pear rustepiphyllouspycnium Foodplant / parasiteForeign /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsliveleaf epiphyllous pycnium parasitises live leaf
leaf (live) live leaf is galled by hypophyllous aecium Restricted Gymnosporangium sabinae European Pear Rust Pucciniales: Pucciniaceae Gymnosporangium fuscum DC., Laundon, G., 1977
/Fungi/Basidiomycota/Pucciniomycetes/Pucciniales/Pucciniaceae/Gymnosporangium sabinae/Gymnosporangium sabinaeeuropean pear rusthypophyllousaecium Foodplant / gall /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/PyruspearsliveleafSole (7-9)hypophyllous aecium causes gall of live leaf
leaf (live) live leaf is parasitised by epiphyllous pycnium Restricted Gymnosporangium sabinae European Pear Rust Pucciniales: Pucciniaceae Gymnosporangium fuscum DC., Laundon, G., 1977
/Fungi/Basidiomycota/Pucciniomycetes/Pucciniales/Pucciniaceae/Gymnosporangium sabinae/Gymnosporangium sabinaeeuropean pear rustepiphyllouspycnium Foodplant / parasite /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/PyruspearsliveleafSole epiphyllous pycnium parasitises live leaf
root (dead) dead root is decayed by fruitbody Grifola frondosa Hen Of The Woods Polyporales: Meripilaceae 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/Meripilaceae/Grifola frondosa/Grifola frondosahen of the woodsfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsdeadroot fruitbody is saprobic on dead root
root (live) live root is parasitised by fruitbody Grifola frondosa Hen Of The Woods Polyporales: Meripilaceae 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/Meripilaceae/Grifola frondosa/Grifola frondosahen of the woodsfruitbody Foodplant / parasite /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsliveroot fruitbody parasitises live root
shoot (decaying) decaying shoot may contain larva Involvulus icosandriae Apple Twig Cutter, Twig Cutting Weevil, Twig-cutting Weevil Coleoptera: Rhynchitidae Orthocerous Weevils, Morris, M.G., 1990
/Animalia/Arthropoda/Insecta/Coleoptera/Rhynchitidae/Involvulus icosandriae/Involvulus icosandriaeapple twig cutter, twig cutting weevil, twig-cutting weevillarva Foodplant / internal feeder /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsdecayingshoot larva feeds within decaying shoot
stem (woody) (live) live stem (woody) is decayed by densely encrusting Lepidosaphes ulmi Mussel Scale Hemiptera: Coccidae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Animalia/Arthropoda/Insecta/Hemiptera/Coccidae/Lepidosaphes ulmi/Lepidosaphes ulmimussel scaledensely encrusting Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearslivestem (woody) densely encrusting is saprobic on live stem (woody)
trunk (thickly encrusted) thickly encrusted trunk has sap sucked by Foreign Pseudaulacaspis pentagona White Peach Scale Hemiptera: Diaspididae CSL Pest Risk Analysis for Pseudaulacaspis pentagona, MacLeod, A., 2007
/Animalia/Arthropoda/Insecta/Hemiptera/Diaspididae/Pseudaulacaspis pentagona/Pseudaulacaspis pentagonawhite peach scale Foodplant / sap suckerForeign /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearsthickly encrustedtrunk sucks sap of thickly encrusted trunk
trunk (wounded) wounded trunk is parasitised by fruitbody Polyporus squamosus Dryad’s Saddle Polyporales: Polyporaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Fungi/Basidiomycota/Agaricomycetes/Polyporales/Polyporaceae/Polyporus squamosus/Polyporus squamosusdryad’s saddlefruitbody Foodplant / parasite /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearswoundedtrunk fruitbody parasitises wounded trunk
twig twig is decayed by subgregarious to densely scattered, covered then erumpent, blackish grey with paler roundish flat disc stroma of Cytospora coelomycetous anamorph UK/Ireland Cytospora populina a valsoid pyrenomycete Diaporthales: Valsaceae British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidia, Grove, W.B., 1935
/Fungi/Ascomycota/Sordariomycetes/Diaporthales/Valsaceae/Cytospora populina/Cytospora populinaa valsoid pyrenomycetesubgregarious to densely scattered, covered then erumpent, blackish grey with paler roundish flat discstromaCytospora coelomycetous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearstwig (10-5)subgregarious to densely scattered, covered then erumpent, blackish grey with paler roundish flat disc stroma of Cytospora coelomycetous anamorph is saprobic on twig
wood wood is decayed by immersed, often loosely grouped perithecium Diaporthe eres a pyrenomycete Diaporthales: Diaporthaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Diaporthales/Diaporthaceae/Diaporthe eres/Diaporthe eresa pyrenomyceteimmersed, often loosely groupedperithecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Pyrus/Pyruspearswood immersed, often loosely grouped perithecium is saprobic on wood

Author & YearTitleSource
Benson, R.B., 1952Hymenoptera: 2. Symphyta. Section (b)Handbooks for the Identification of British Insects , Vol VI, Part 2(b), 137pp, The Royal Entomological Society of London
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
Buczacki, S. & Harris, K., 1998Pests, Diseases & Disorders of Garden PlantsCollins Photoguide, 2nd edition edition, Collins
Bullock, J.A., 1992Host Plants of British Beetles: A List of Recorded Associations11a, 24pp, Amateur Entomologists’ Society
Ellis, M.B. & J.P., 1997Microfungi on Land Plants: An Identification Handbook2nd (New Enlarged) edition, 868pp, The Richmond Publishing Co. Ltd
Grove, W.B., 1935British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidiaVol I, 488pp, Cambridge University Press
Laundon, G., 1977Gymnosporangium asiaticum Miyabe ex YamadaI.M.I. Descriptions of Pathogenic Fungi and Bacteria CMI Descriptions of Pathenogenic Fungi and Bacteria Sheet 541: 1.
Laundon, G., 1977Gymnosporangium fuscum DC.I.M.I. Descriptions of Pathogenic Fungi and Bacteria CMI Descriptions of Pathenogenic Fungi and Bacteria Sheet 545.
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
MacLeod, A. & Matthews, L., 2005CSL Pest Risk Analysis for Eulecanium excrescensPRAs for consultation on pest risk management PRAs for consultation on pest risk management.
MacLeod, A., 2007CSL Pest Risk Analysis for Pseudaulacaspis pentagonaPRAs for consultation on pest risk management PRAs for consultation on pest risk management.
Morgan-Jones, G., 1967Phoma prunicola (Opiz) Wollenw. & Hochapf.I.M.I. Descriptions of Pathogenic Fungi and Bacteria CMI Descriptions of Pathenogenic Fungi and Bacteria Sheet 135.
Morris, I. & Roberts, P., 1997British Vuilleminia speciesMycologist Vol 11 (1): 4-6.
Morris, M.G., 1990Orthocerous WeevilsHandbooks for the Identification of British Insects, Vol 5 Part 16, 108pp, The Royal Entomological Society of London
Morris, M.G., 2002True Weevils (Part I): Family Curculionidae, subfamilies Raymondionyminae to SmicronychinaeHandbooks for the Identification of British Insects, Vol 5, Part 17b, 149pp, The Royal Entomological Society of London
Stubbs, F.B. (Editor), 1986Provisional Keys to British Plant Galls95pp, British Plant Gall Society (BPGS)

Pyrus (pears) 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
Species aggregate 1 subtaxa 95 trophisms 1 references
Species 2 trophisms
Species hybrid 2 trophisms
Taxonomic hierarchy:
GenusPyrus (pears)
FamilyROSACEAE (roses and fruit trees)
OrderROSALES (roses, elms, nettles, hops, buckthorns and figs)
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 Pyrus (pears)

Pyrus (pears) may be included in identification literature listed under the following higher taxa:

Literature listed under the following higher taxa may be relevant to Pyrus (pears):

BioImagesBioImages (www.bioimages.org.uk) has 16 images of Pyrus (pears)
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