Rhododendron L.
(rhododendrons and azaleas)

Interactions where Rhododendron 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 adult Stephanitis rhododendri Rhododendron Lacebug Hemiptera: Tingidae Land and Water Bugs of the British Isles, Southwood, T.R.E. & Leston, D., 1959
/Animalia/Arthropoda/Insecta/Hemiptera/Tingidae/Stephanitis rhododendri/Stephanitis rhododendrirhododendron lacebugadult Foodplant / sap sucker /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleas adult sucks sap of
has sap sucked by nymph Stephanitis rhododendri Rhododendron Lacebug Hemiptera: Tingidae Land and Water Bugs of the British Isles, Southwood, T.R.E. & Leston, D., 1959
/Animalia/Arthropoda/Insecta/Hemiptera/Tingidae/Stephanitis rhododendri/Stephanitis rhododendrirhododendron lacebugnymph Foodplant / sap sucker /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleas nymph sucks sap of
has sap sucked by Stephanitis takeyai Andromeda Lacebug Hemiptera: Tingidae CSL Pest Risk Analysis for Stephanitis takeyai, MacLeod, A., 2006
/Animalia/Arthropoda/Insecta/Hemiptera/Tingidae/Stephanitis takeyai/Stephanitis takeyaiandromeda lacebug Foodplant / sap sucker /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleas sucks sap of
is foodplant of pycnidium of Phyllosticta coelomycetous anamorph UK/Ireland Phyllosticta cunninghami a coelomycete Botryosphaeriales: Phyllostictaceae Fungi of the South East England, Dennis, R.W.G., 1995
/Fungi/Ascomycota/Dothideomycetes/Botryosphaeriales/Phyllostictaceae/Phyllosticta cunninghami/Phyllosticta cunninghamia coelomycetepycnidiumPhyllosticta coelomycetous anamorph Foodplant / feeds onUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleas pycnidium of Phyllosticta coelomycetous anamorph feeds on
is foodplant of pycnidium of Phoma coelomycetous anamorph UK/Ireland Phyllosticta rhodorae a coelomycete Botryosphaeriales: Phyllostictaceae Fungi of the South East England, Dennis, R.W.G., 1995
/Fungi/Ascomycota/Dothideomycetes/Botryosphaeriales/Phyllostictaceae/Phyllosticta rhodorae/Phyllosticta rhodoraea coelomycetepycnidiumPhoma coelomycetous anamorph Foodplant / feeds onUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleas pycnidium of Phoma coelomycetous anamorph feeds on
is foodplant of pycnidium of Phoma coelomycetous anamorph UK/Ireland Phoma pomorum a coelomycete Pleosporales Fungi of the South East England, Dennis, R.W.G., 1995
/Fungi/Ascomycota/Dothideomycetes/Pleosporales/Phoma pomorum/Phoma pomoruma coelomycetepycnidiumPhoma coelomycetous anamorph Foodplant / feeds onUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleas pycnidium of Phoma coelomycetous anamorph feeds on
is foodplant of pycnidium of Phoma coelomycetous anamorph UK/Ireland Phoma leveillei a coelomycete Pleosporales Fungi of the South East England, Dennis, R.W.G., 1995
/Fungi/Ascomycota/Dothideomycetes/Pleosporales/Phoma leveillei/Phoma leveilleia coelomycetepycnidiumPhoma coelomycetous anamorph Foodplant / feeds onUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleas pycnidium of Phoma coelomycetous anamorph feeds on
is decayed by stromatic, single or in groups of 2-3 apothecium Foreign+?UK/Eire Ovulinia azaleae Rhododendron Petal Blight - causative organism Helotiales: Sclerotiniaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
Fungal foes in your garden no 58: Petal Blight on Azalea, Fox, R.T.V., 2004
/Fungi/Ascomycota/Leotiomycetes/Helotiales/Sclerotiniaceae/Ovulinia azaleae/Ovulinia azaleaerhododendron petal blight (causative organism)stromatic, single or in groups of 2-3apothecium Foodplant / saprobeConfirmed abroad, probable in UK/Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleas stromatic, single or in groups of 2-3 apothecium is saprobic on
litter is decayed by colony of Phaeostalagmus dematiaceous anamorph Phaeostalagmus tenuissimus a dematiaceous anamorphic fungus Chaetosphaeriales: Chaetosphaeriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Chaetosphaeriales/Chaetosphaeriaceae/Phaeostalagmus tenuissimus/Phaeostalagmus tenuissimusa dematiaceous anamorphic funguscolonyPhaeostalagmus dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleaslitter colony of Phaeostalagmus dematiaceous anamorph is saprobic on litter
is foodplant of pycnidium of Diplodina coelomycetous anamorph UK/Ireland Diplodina eurhododendri a coelomycete Diaporthales: Gnomoniaceae Fungi of the South East England, Dennis, R.W.G., 1995
/Fungi/Ascomycota/Sordariomycetes/Diaporthales/Gnomoniaceae/Diplodina eurhododendri/Diplodina eurhododendria coelomycetepycnidiumDiplodina coelomycetous anamorph Foodplant / feeds onUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleas pycnidium of Diplodina coelomycetous anamorph feeds on
may be infected and damaged by Armillaria honey fungi Agaricales: Physalacriaceae British Parasitic Fungi, Moore, W.C., 1959
/Fungi/Basidiomycota/Agaricomycetes/Agaricales/Physalacriaceae/Armillaria/Armillariahoney fungi Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleas infects and damages
(dead) dead is decayed by colony of Acrodontium dematiaceous anamorph UK/Ireland Acrodontium hydnicola a dematiaceous anamorphic fungus Fungi of the South East England, Dennis, R.W.G., 1995
/Fungi/Ascomycota/Acrodontium hydnicola/Acrodontium hydnicolaa dematiaceous anamorphic funguscolonyAcrodontium dematiaceous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead colony of Acrodontium dematiaceous anamorph is saprobic on dead
(dead) dead is decayed by acervulus of Pestalotiopsis coelomycetous anamorph UK/Ireland Pestalotiopsis funerea a coelomycete Xylariales: Amphisphaeriaceae Fungi of the South East England, Dennis, R.W.G., 1995
/Fungi/Ascomycota/Sordariomycetes/Xylariales/Amphisphaeriaceae/Pestalotiopsis funerea/Pestalotiopsis funereaa coelomyceteacervulusPestalotiopsis coelomycetous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead acervulus of Pestalotiopsis coelomycetous anamorph is saprobic on dead
(dead) dead is decayed by acervulus of Pestalotiopsis coelomycetous anamorph UK/Ireland Pestalotiopsis sydowiana a coelomycete Xylariales: Amphisphaeriaceae Fungi of the South East England, Dennis, R.W.G., 1995
/Fungi/Ascomycota/Sordariomycetes/Xylariales/Amphisphaeriaceae/Pestalotiopsis sydowiana/Pestalotiopsis sydowianaa coelomyceteacervulusPestalotiopsis coelomycetous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead acervulus of Pestalotiopsis coelomycetous anamorph is saprobic on dead
(dead) dead is decayed by acervulus of Pestalotiopsis coelomycetous anamorph UK/Ireland Pestalotiopsis versicolor a coelomycete Xylariales: Amphisphaeriaceae Fungi of the South East England, Dennis, R.W.G., 1995
/Fungi/Ascomycota/Sordariomycetes/Xylariales/Amphisphaeriaceae/Pestalotiopsis versicolor/Pestalotiopsis versicolora coelomyceteacervulusPestalotiopsis coelomycetous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead acervulus of Pestalotiopsis coelomycetous anamorph is saprobic on dead
(live) live is foodplant of adult Otiorhynchus singularis Raspberry Weevil, Clay-coloured Weevil Coleoptera: Curculionidae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Animalia/Arthropoda/Insecta/Coleoptera/Curculionidae/Otiorhynchus singularis/Otiorhynchus singularisraspberry weevil, clay-coloured weeviladult Foodplant / feeds on /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleaslive adult feeds on live
(live) live has sap sucked by nymph Minor Kleidocerys resedae Birch Catkin Bug Hemiptera: Lygaeidae Land and Water Bugs of the British Isles, Southwood, T.R.E. & Leston, D., 1959
/Animalia/Arthropoda/Insecta/Hemiptera/Lygaeidae/Kleidocerys resedae/Kleidocerys resedaebirch catkin bugnymph Foodplant / sap sucker /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveMinor nymph sucks sap of live
(live) live has sap sucked by adult Minor Kleidocerys resedae Birch Catkin Bug Hemiptera: Lygaeidae Land and Water Bugs of the British Isles, Southwood, T.R.E. & Leston, D., 1959
/Animalia/Arthropoda/Insecta/Hemiptera/Lygaeidae/Kleidocerys resedae/Kleidocerys resedaebirch catkin bugadult Foodplant / sap sucker /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveMinor adult sucks sap of live
bark bark is decayed by effuse colony of Mariannaea anamorph Mariannaea elegans an anamorphic fungus Hypocreales: Nectriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Hypocreales/Nectriaceae/Mariannaea elegans/Mariannaea elegansan anamorphic funguseffusecolonyMariannaea anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasbark effuse colony of Mariannaea anamorph is saprobic on bark
bark (dead) dead bark is decayed by effuse colony of Acladium anamorph Botryobasidium conspersum a resupinate fungus Cantharellales: Botryobasidiaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Basidiomycota/Agaricomycetes/Cantharellales/Botryobasidiaceae/Botryobasidium conspersum/Botryobasidium conspersuma resupinate funguseffusecolonyAcladium anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadbark effuse colony of Acladium anamorph is saprobic on dead bark
branch (large) (decayed) decayed branch (large) is decayed by fruitbody UK/Ireland Crepidotus applanatus var applanatus Flat Oysterling Agaricales: Inocybaceae 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/Agaricales/Inocybaceae/Crepidotus applanatus var. applanatus/Crepidotus applanatus var. applanatusflat oysterlingfruitbody Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdecayedbranch (large) fruitbody is saprobic on decayed branch (large)
branch wood (dry, hard, decorticate) dry, hard, decorticate branch wood is decayed by superficial pycnidium of Aposphaeria coelomycetous anamorph Melanomma pulvis-pyrius an ascomycete Pleosporales: Melanommataceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Pleosporales/Melanommataceae/Melanomma pulvis-pyrius/Melanomma pulvis-pyriusan ascomycetesuperficialpycnidiumAposphaeria coelomycetous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdry, hard, decorticatebranch wood (9-5)superficial pycnidium of Aposphaeria coelomycetous anamorph is saprobic on dry, hard, decorticate branch wood
branch wood (dry, hard, decorticate) dry, hard, decorticate branch wood is decayed by superficial, often in very large clusters pseudothecium Melanomma pulvis-pyrius an ascomycete Pleosporales: Melanommataceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Pleosporales/Melanommataceae/Melanomma pulvis-pyrius/Melanomma pulvis-pyriusan ascomycetesuperficial, often in very large clusterspseudothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdry, hard, decorticatebranch wood (9-5)superficial, often in very large clusters pseudothecium is saprobic on dry, hard, decorticate branch wood
branch (dead, decorticate) dead, decorticate branch is decayed by hysterothecium Hysterium angustatum a coffee bean fungus Hysteriales: Hysteriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Hysteriales/Hysteriaceae/Hysterium angustatum/Hysterium angustatuma coffee bean fungushysterothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, decorticatebranch (3-5)hysterothecium is saprobic on dead, decorticate branch
branch (dead, esp. buried under brushwood) dead, esp. buried under brushwood branch is decayed by gregarious, subiculate perithecium Rosellinia aquila a pyrenomycete Xylariales: Xylariaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Xylariales/Xylariaceae/Rosellinia aquila/Rosellinia aquilaa pyrenomycetegregarious, subiculateperithecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, esp. buried under brushwoodbranch (2-5)gregarious, subiculate perithecium is saprobic on dead, esp. buried under brushwood branch
branch (dead, esp. buried under brushwood) dead, esp. buried under brushwood branch is decayed by colony of Geniculosporium dematiaceous anamorph Rosellinia aquila a pyrenomycete Xylariales: Xylariaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Xylariales/Xylariaceae/Rosellinia aquila/Rosellinia aquilaa pyrenomycetecolonyGeniculosporium dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, esp. buried under brushwoodbranch (2-5)colony of Geniculosporium dematiaceous anamorph is saprobic on dead, esp. buried under brushwood branch
branch (dead, fallen) dead, fallen branch is decayed by extensively subiculate apothecium Minor Tapesia fusca a discomycete Helotiales: Dermateaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Leotiomycetes/Helotiales/Dermateaceae/Tapesia fusca/Tapesia fuscaa discomyceteextensively subiculateapothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, fallenbranchMinor (1-12)extensively subiculate apothecium is saprobic on dead, fallen branch
branch (dead, locally dark reddish-brown, shining) dead, locally dark reddish-brown, shining branch is decayed by scattered, immersed, plurilocular stroma of Cytospora coelomycetous anamorph UK/Ireland Cytospora subclypeata a stromatic coelomycete Diaporthales: Valsaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidia, Grove, W.B., 1935
/Fungi/Ascomycota/Sordariomycetes/Diaporthales/Valsaceae/Cytospora subclypeata/Cytospora subclypeataa stromatic coelomycetescattered, immersed, plurilocularstromaCytospora coelomycetous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, locally dark reddish-brown, shiningbranch (2-11)scattered, immersed, plurilocular stroma of Cytospora coelomycetous anamorph is saprobic on dead, locally dark reddish-brown, shining branch
branch (dead, often grey or purple stained) dead, often grey or purple stained branch is decayed by effuse colony of Triposporium dematiaceous anamorph Triposporium elegans a dematiaceous anamorphic fungus Asterinales: Asterinaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Asterinales/Asterinaceae/Triposporium elegans/Triposporium elegansa dematiaceous anamorphic funguseffusecolonyTriposporium dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, often grey or purple stainedbranch (1-12)effuse colony of Triposporium dematiaceous anamorph is saprobic on dead, often grey or purple stained branch
branch (dead) dead branch is decayed by hysterothecium Gloniopsis praelonga an ascomycete Hysteriales: Hysteriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Hysteriales/Hysteriaceae/Gloniopsis praelonga/Gloniopsis praelongaan ascomycetehysterothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadbranch (1-12)hysterothecium is saprobic on dead branch
branch (dead) dead branch is decayed by sessile apothecium Mollisia cinerea Common Grey Disco Helotiales: Dermateaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Leotiomycetes/Helotiales/Dermateaceae/Mollisia cinerea/Mollisia cinereacommon grey discosessileapothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadbranch (1-12)sessile apothecium is saprobic on dead branch
branch (dead) dead branch is decayed by apothecium Dematioscypha dematiicola a discomycete Helotiales: Hyaloscyphaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Leotiomycetes/Helotiales/Hyaloscyphaceae/Dematioscypha dematiicola/Dematioscypha dematiicolaa discomyceteapothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadbranch (10-4)apothecium is saprobic on dead branch
branch (dead) dead branch is decayed by effuse colony of Haplographium dematiaceous anamorph Dematioscypha dematiicola a discomycete Helotiales: Hyaloscyphaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Leotiomycetes/Helotiales/Hyaloscyphaceae/Dematioscypha dematiicola/Dematioscypha dematiicolaa discomyceteeffusecolonyHaplographium dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadbranch (1-12)effuse colony of Haplographium dematiaceous anamorph is saprobic on dead branch
branch (dead) dead branch is decayed by effuse colony of Sporidesmium dematiaceous anamorph Sporidesmium leptosporum a dematiaceous anamorphic fungus Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Sporidesmium leptosporum/Sporidesmium leptosporuma dematiaceous anamorphic funguseffusecolonySporidesmium dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadbranch (1-12)effuse colony of Sporidesmium dematiaceous anamorph is saprobic on dead branch
branch (dead) dead branch is decayed by stromatic, in clusters of up to 15 perithecium Nectria cinnabarina Coral Spot, Coral-spot Fungus Hypocreales: Nectriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Hypocreales/Nectriaceae/Nectria cinnabarina/Nectria cinnabarinacoral spot, coral-spot fungusstromatic, in clusters of up to 15perithecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadbranch (9-3)stromatic, in clusters of up to 15 perithecium is saprobic on dead branch
branch (dead) dead branch is decayed by sporodochium of Tubercularia anamorph Nectria cinnabarina Coral Spot, Coral-spot Fungus Hypocreales: Nectriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Hypocreales/Nectriaceae/Nectria cinnabarina/Nectria cinnabarinacoral spot, coral-spot fungussporodochiumTubercularia anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadbranch sporodochium of Tubercularia anamorph is saprobic on dead branch
branch (dead) dead branch is decayed by Tubulicrinis regificus a white-wash fungus Hymenochaetales: Hymenochaetaceae 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/Hymenochaetales/Hymenochaetaceae/Tubulicrinis regificus/Tubulicrinis regificusa white-wash fungus Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadbranch is saprobic on dead branch
branch (fallen, dead, esp. covered by leaf mould) fallen, dead, esp. covered by leaf mould branch is decayed by perithecium Chaetosphaeria inaequalis a pyrenomycete Chaetosphaeriales: Chaetosphaeriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Chaetosphaeriales/Chaetosphaeriaceae/Chaetosphaeria inaequalis/Chaetosphaeria inaequalisa pyrenomyceteperithecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasfallen, dead, esp. covered by leaf mouldbranch (1-12)perithecium is saprobic on fallen, dead, esp. covered by leaf mould branch
branch (fallen, dead, esp. covered by leaf mould) fallen, dead, esp. covered by leaf mould branch is decayed by colony of Gonytrichum dematiaceous anamorph Chaetosphaeria inaequalis a pyrenomycete Chaetosphaeriales: Chaetosphaeriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Chaetosphaeriales/Chaetosphaeriaceae/Chaetosphaeria inaequalis/Chaetosphaeria inaequalisa pyrenomycetecolonyGonytrichum dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasfallen, dead, esp. covered by leaf mouldbranch (1-12)colony of Gonytrichum dematiaceous anamorph is saprobic on fallen, dead, esp. covered by leaf mould branch
branch (fallen, dead) fallen, dead branch is decayed by effuse colony of Helminthosporium dematiaceous anamorph Helminthosporium velutinum a dematiaceous anamorphic fungus Pleosporales: Massarinaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Pleosporales/Massarinaceae/Helminthosporium velutinum/Helminthosporium velutinuma dematiaceous anamorphic funguseffusecolonyHelminthosporium dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasfallen, deadbranch effuse colony of Helminthosporium dematiaceous anamorph is saprobic on fallen, dead branch
branch (fallen, dead) fallen, dead branch is decayed by colony of Phaeostalagmus dematiaceous anamorph Phaeostalagmus cyclosporus a dematiaceous anamorphic fungus Chaetosphaeriales: Chaetosphaeriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Chaetosphaeriales/Chaetosphaeriaceae/Phaeostalagmus cyclosporus/Phaeostalagmus cyclosporusa dematiaceous anamorphic funguscolonyPhaeostalagmus dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasfallen, deadbranch (1-12)colony of Phaeostalagmus dematiaceous anamorph is saprobic on fallen, dead branch
branch (fallen) fallen branch is decayed by colony of Phaeostalagmus dematiaceous anamorph Phaeostalagmus tenuissimus a dematiaceous anamorphic fungus Chaetosphaeriales: Chaetosphaeriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Chaetosphaeriales/Chaetosphaeriaceae/Phaeostalagmus tenuissimus/Phaeostalagmus tenuissimusa dematiaceous anamorphic funguscolonyPhaeostalagmus dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasfallenbranch colony of Phaeostalagmus dematiaceous anamorph is saprobic on fallen branch
bud (live) live bud may contain caterpillar Zeuzera pyrina Leopard Moth Lepidoptera: Cossidae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Animalia/Arthropoda/Insecta/Lepidoptera/Cossidae/Zeuzera pyrina/Zeuzera pyrinaleopard mothcaterpillar Foodplant / internal feeder /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleaslivebud caterpillar feeds within live bud
flower bud (esp terminal) (brown, then silvery) Major brown, then silvery flower bud (esp terminal) may be infected and damaged by coremium of Pycnostysanus dematiacous anamorph UK/IrelandRestricted Seifertia azaleae Rhododendron Bud Blast and Twig Blight - causative organism Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Fungi of the South East England, Dennis, R.W.G., 1995
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Seifertia azaleae/Seifertia azaleaerhododendron bud blast and twig blight (causative organism)coremiumPycnostysanus dematiacous anamorph Foodplant / pathogenUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasbrown, then silveryflower bud (esp terminal)Sole coremium of Pycnostysanus dematiacous anamorph infects and damages brown, then silvery flower bud (esp terminal)
leaf (esp. near midrib) (dead) dead leaf (esp. near midrib) is decayed by amphigenous, erumpent perithecium Coleroa rhododendri a pyrenomycete Venturiales: Venturiaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Venturiales/Venturiaceae/Coleroa rhododendri/Coleroa rhododendria pyrenomyceteamphigenous, erumpentperithecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadleaf (esp. near midrib) (2-4)amphigenous, erumpent perithecium is saprobic on dead leaf (esp. near midrib)
leaf (margin) leaf (margin) is grazed by nocturnal adult Major Otiorhynchus sulcatus Vine Weevil Coleoptera: Curculionidae RHS Gardening For All, RHS
Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Animalia/Arthropoda/Insecta/Coleoptera/Curculionidae/Otiorhynchus sulcatus/Otiorhynchus sulcatusvine weevilnocturnaladult Foodplant / open feeder /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasleaf (margin)Major nocturnal adult grazes on leaf (margin)
leaf leaf is spotted by mycelium UK/IrelandMajor Phytophthora alni Sudden Oak Death - causative organism, SOD, Phytophthora Disease Of Alder Peronosporales: Peronosporaceae Phytophthora diseases of trees, Anon., 2008
Phytophthora ramorum: one pathogen and many diseases, an emerging threat to forest ecosystems and ornamental plant life, Appiah, A., Jennings, P., & Turner, J.A., 2004
First report of Ramorum dieback (Phytophthora ramorum) on Hamamelis virginiana in the UK, Giltrap, P.M. et al, 2004
/Chromista/Oomycota/Peronosporea/Peronosporales/Peronosporaceae/Phytophthora alni/Phytophthora alnisudden oak death (causative organism), SOD, phytophthora disease of aldermycelium Foodplant / spot causerUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasleafMajor mycelium causes spots on leaf
leaf leaf is spotted by epiphyllous pycnidium of Phyllosticta coelomycetous anamorph UK/Ireland Phyllosticta rhododendri sensu Westd. a coelomycete Botryosphaeriales: Phyllostictaceae Fungi of the South East England, Dennis, R.W.G., 1995
British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidia, Grove, W.B., 1935
/Fungi/Ascomycota/Dothideomycetes/Botryosphaeriales/Phyllostictaceae/Phyllosticta rhododendri sensu Westd./Phyllosticta rhododendri sensu Westd.a coelomyceteepiphyllouspycnidiumPhyllosticta coelomycetous anamorph Foodplant / spot causerUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasleaf (5-12)epiphyllous pycnidium of Phyllosticta coelomycetous anamorph causes spots on leaf
leaf leaf may have epiphytic superficial pseudothecium Dennisiella babingtonii a sooty mould Capnodiales: Coccodiniaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Capnodiales/Coccodiniaceae/Dennisiella babingtonii/Dennisiella babingtoniia sooty mouldsuperficialpseudothecium Plant / epiphyte /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasleaf superficial pseudothecium grows on leaf
leaf leaf may have epiphytic seta-bearing mycelial mat Dennisiella babingtonii a sooty mould Capnodiales: Coccodiniaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Capnodiales/Coccodiniaceae/Dennisiella babingtonii/Dennisiella babingtoniia sooty mouldseta-bearingmycelial mat Plant / epiphyte /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasleaf seta-bearing mycelial mat grows on leaf
leaf leaf may be infected and damaged by coremium of Pycnostysanus dematiacous anamorph UK/IrelandRestricted Seifertia azaleae Rhododendron Bud Blast and Twig Blight - causative organism Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Seifertia azaleae/Seifertia azaleaerhododendron bud blast and twig blight (causative organism)coremiumPycnostysanus dematiacous anamorph Foodplant / pathogenUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasleafSole coremium of Pycnostysanus dematiacous anamorph infects and damages leaf
leaf (dead, attached) dead, attached leaf is decayed by epiphyllous, immersed, in swarm perithecium Phomatospora gelatinospora a pyrenomycete Xylariales Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Xylariales/Phomatospora gelatinospora/Phomatospora gelatinosporaa pyrenomyceteepiphyllous, immersed, in swarmperithecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, attachedleaf (4-5)epiphyllous, immersed, in swarm perithecium is saprobic on dead, attached leaf
leaf (dead, fallen) dead, fallen leaf is decayed by immersed apothecium Lophodermium vagulum a discomycete Rhytismatales: Rhytismataceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Leotiomycetes/Rhytismatales/Rhytismataceae/Lophodermium vagulum/Lophodermium vaguluma discomyceteimmersedapothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, fallenleaf immersed apothecium is saprobic on dead, fallen leaf
leaf (dead, locally dark reddish-brown, shining) dead, locally dark reddish-brown, shining leaf is decayed by scattered, immersed, plurilocular stroma of Cytospora coelomycetous anamorph UK/Ireland Cytospora subclypeata a stromatic coelomycete Diaporthales: Valsaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidia, Grove, W.B., 1935
/Fungi/Ascomycota/Sordariomycetes/Diaporthales/Valsaceae/Cytospora subclypeata/Cytospora subclypeataa stromatic coelomycetescattered, immersed, plurilocularstromaCytospora coelomycetous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, locally dark reddish-brown, shiningleaf (2-11)scattered, immersed, plurilocular stroma of Cytospora coelomycetous anamorph is saprobic on dead, locally dark reddish-brown, shining leaf
leaf (dead) dead leaf is decayed by effuse colony of Belemnospora dematiaceous anamorph UK/Ireland Belemnospora epiphylla a dematiaceous anamorphic fungus Fungi of the South East England, Dennis, R.W.G., 1995
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Belemnospora epiphylla/Belemnospora epiphyllaa dematiaceous anamorphic funguseffusecolonyBelemnospora dematiaceous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadleaf effuse colony of Belemnospora dematiaceous anamorph is saprobic on dead leaf
leaf (dead) dead leaf is decayed by immersed, numerous, gregarious pycnidium of Coleophoma coelomycetous anamorph Coleophoma cylindrospora a coelomycete British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidia, Grove, W.B., 1935
/Fungi/Ascomycota/Coleophoma cylindrospora/Coleophoma cylindrosporaa coelomyceteimmersed, numerous, gregariouspycnidiumColeophoma coelomycetous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadleaf immersed, numerous, gregarious pycnidium of Coleophoma coelomycetous anamorph is saprobic on dead leaf
leaf (dead) dead leaf is decayed by hypostromatic hysterothecia Aulographum hederae a fly speck fungus Asterinales: Aulographaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Asterinales/Aulographaceae/Aulographum hederae/Aulographum hederaea fly speck fungushypostromatichysterothecia Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadleaf (1-7)hypostromatic hysterothecia is saprobic on dead leaf
leaf (dead) dead leaf is decayed by effuse colony of Sporidesmium dematiaceous anamorph Sporidesmium bombacis a dematiaceous anamorphic fungus Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Sporidesmium bombacis/Sporidesmium bombacisa dematiaceous anamorphic funguseffusecolonySporidesmium dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadleaf (5)effuse colony of Sporidesmium dematiaceous anamorph is saprobic on dead leaf
leaf (dead) dead leaf is decayed by superficial, subiculate pseudothecium Protoventuria arxii an ascomycete Venturiales: Venturiaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Venturiales/Venturiaceae/Protoventuria arxii/Protoventuria arxiian ascomycetesuperficial, subiculatepseudothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadleaf (5)superficial, subiculate pseudothecium is saprobic on dead leaf
leaf (dead) dead leaf is decayed by effuse colony of Henicospora dematiaceous anamorph Henicospora minor a dematiaceous anamorphic fungus Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Henicospora minor/Henicospora minora dematiaceous anamorphic funguseffusecolonyHenicospora dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadleaf (9-11)effuse colony of Henicospora dematiaceous anamorph is saprobic on dead leaf
leaf (dead) dead leaf is spotted by amphigenous acervulus of Pestalotiopsis coelomycetous anamorph UK/Ireland Pestalotiopsis guepinii a camellia leaf-spot Xylariales: Amphisphaeriaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Fungi of the South East England, Dennis, R.W.G., 1995
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Xylariales/Amphisphaeriaceae/Pestalotiopsis guepinii/Pestalotiopsis guepiniia camellia leaf-spotamphigenousacervulusPestalotiopsis coelomycetous anamorph Foodplant / spot causerUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadleaf (10-11)amphigenous acervulus of Pestalotiopsis coelomycetous anamorph causes spots on dead leaf
leaf (dead) dead leaf is decayed by acervulus of Seimatosporium coelomycetous anamorph Seimatosporium arbuti a coelomycete Xylariales: Amphisphaeriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Xylariales/Amphisphaeriaceae/Seimatosporium arbuti/Seimatosporium arbutia coelomyceteacervulusSeimatosporium coelomycetous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadleaf acervulus of Seimatosporium coelomycetous anamorph is saprobic on dead leaf
leaf (dead) dead leaf is decayed by acervulus of Seimatosporium coelomycetous anamorph Seimatosporium mariae a coelomycete Xylariales: Amphisphaeriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Xylariales/Amphisphaeriaceae/Seimatosporium mariae/Seimatosporium mariaea coelomyceteacervulusSeimatosporium coelomycetous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadleaf acervulus of Seimatosporium coelomycetous anamorph is saprobic on dead leaf
leaf (fading) fading leaf is spotted by epiphyllous, scattered, immersed then erumpent pycnidium of Phyllosticta coelomycetous anamorph UK/Ireland Phyllosticta saccardoi a coelomycete Botryosphaeriales: Phyllostictaceae Fungi of the South East England, Dennis, R.W.G., 1995
British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidia, Grove, W.B., 1935
/Fungi/Ascomycota/Dothideomycetes/Botryosphaeriales/Phyllostictaceae/Phyllosticta saccardoi/Phyllosticta saccardoia coelomyceteepiphyllous, scattered, immersed then erumpentpycnidiumPhyllosticta coelomycetous anamorph Foodplant / spot causerUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasfadingleaf (8)epiphyllous, scattered, immersed then erumpent pycnidium of Phyllosticta coelomycetous anamorph causes spots on fading leaf
leaf (fallen, long dead) fallen, long dead leaf is decayed by thinly scattered, mostly hypophyllous, dimorphic pycnidium of Ceuthospora coelomycetous anamorph UK/Ireland Phacidium falconeri a discomycete Helotiales: Phacidiaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidia, Grove, W.B., 1935
/Fungi/Ascomycota/Leotiomycetes/Helotiales/Phacidiaceae/Phacidium falconeri/Phacidium falconeria discomycetethinly scattered, mostly hypophyllous, dimorphicpycnidiumCeuthospora coelomycetous anamorph Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasfallen, long deadleaf (6-10)thinly scattered, mostly hypophyllous, dimorphic pycnidium of Ceuthospora coelomycetous anamorph is saprobic on fallen, long dead leaf
leaf (fallen) fallen leaf is decayed by perithecium UK/Ireland Melanospora pegleri a pyrenomycete Melanosporales: Ceratostomataceae Melanospora pegleri, a new species from fallen Laurus and other leaves in the British Isles, Hawksworth, D.L., Henrici, A. & Kirk, P.M., 1999
/Fungi/Ascomycota/Sordariomycetes/Melanosporales/Ceratostomataceae/Melanospora pegleri/Melanospora pegleria pyrenomyceteperithecium Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasfallenleaf perithecium is saprobic on fallen leaf
leaf (live) live leaf is grazed by caterpillar Orgyia antiqua Vapourer Lepidoptera: Erebidae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Animalia/Arthropoda/Insecta/Lepidoptera/Erebidae/Orgyia antiqua/Orgyia antiquavapourercaterpillar Foodplant / open feeder /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf (-7/8)caterpillar grazes on live leaf
leaf (live) live leaf has sap sucked by UK/Ireland Graphocephala fennahi Rhododendron Leafhopper Hemiptera: Cicadellidae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Animalia/Arthropoda/Insecta/Hemiptera/Cicadellidae/Graphocephala fennahi/Graphocephala fennahirhododendron leafhopper Foodplant / sap suckerUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf sucks sap of live leaf
leaf (live) live leaf has sap sucked by Dialeurodes chittendeni Rhododendron Whitefly Hemiptera: Aleyrodidae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Animalia/Arthropoda/Insecta/Hemiptera/Aleyrodidae/Dialeurodes chittendeni/Dialeurodes chittendenirhododendron whitefly Foodplant / sap sucker /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf (esp. 6-7)sucks sap of live leaf
leaf (live) live leaf has sap sucked by hypophyllous UK/IrelandMajor Pulvinaria floccifera Cushion Scale, Cottony Camellia Scale Hemiptera: Coccidae Cottony camellia scale, an increasingly important horticultural pest, Anon., 2009
Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Changes in status and distribution of Hydrangea Scale, Pulvinaria hydrangeae (Hemiptera: Coccomorpha: Coccidae) in Britain, Salisbury, A. & Malumphy, C., 2017
/Animalia/Arthropoda/Insecta/Hemiptera/Coccidae/Pulvinaria floccifera/Pulvinaria flocciferacushion scale, cottony camellia scalehypophyllous Foodplant / sap suckerUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleafMajor hypophyllous sucks sap of live leaf
leaf (live) live leaf is spotted by immersed pseudothecium Phyllosticta philoprina an ascomycete Botryosphaeriales: Phyllostictaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Botryosphaeriales/Phyllostictaceae/Phyllosticta philoprina/Phyllosticta philoprinaan ascomyceteimmersedpseudothecium Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf (2-9)immersed pseudothecium causes spots on live leaf
leaf (live) live leaf is spotted by pycnidial anamorph Phyllosticta philoprina an ascomycete Botryosphaeriales: Phyllostictaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Botryosphaeriales/Phyllostictaceae/Phyllosticta philoprina/Phyllosticta philoprinaan ascomycetepycnidial anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf pycnidial anamorph causes spots on live leaf
leaf (live) live leaf is spotted by Phyllosticta coelomycetous anamorph Phyllosticta saccardoi a coelomycete Botryosphaeriales: Phyllostictaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Fungi/Ascomycota/Dothideomycetes/Botryosphaeriales/Phyllostictaceae/Phyllosticta saccardoi/Phyllosticta saccardoia coelomycetePhyllosticta coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf Phyllosticta coelomycetous anamorph causes spots on live leaf
leaf (live) live leaf is spotted by amphigenous colony of Pseudocercospora dematiaceous anamorph UK/Ireland Pseudocercospora handelii a dematiaceous anamorphic fungus Capnodiales: Mycosphaerellaceae Fungi of the South East England, Dennis, R.W.G., 1995
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Capnodiales/Mycosphaerellaceae/Pseudocercospora handelii/Pseudocercospora handeliia dematiaceous anamorphic fungusamphigenouscolonyPseudocercospora dematiaceous anamorph Foodplant / spot causerUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf amphigenous colony of Pseudocercospora dematiaceous anamorph causes spots on live leaf
leaf (live) live leaf may be infected and damaged by amphigenous, immersed pycnidium of Septoria coelomycetous anamorph UK/Ireland Septoria azaleae a leaf-spot fungus Capnodiales: Mycosphaerellaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Fungi of the South East England, Dennis, R.W.G., 1995
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Capnodiales/Mycosphaerellaceae/Septoria azaleae/Septoria azaleaea leaf-spot fungusamphigenous, immersedpycnidiumSeptoria coelomycetous anamorph Foodplant / pathogenUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf (3-9)amphigenous, immersed pycnidium of Septoria coelomycetous anamorph infects and damages live leaf
leaf (live) live leaf is parasitised by mainly hypophyllous conidial anamorph UK/Ireland Erysiphe azaleae a powdery mildew Erysiphales: Erysiphaceae Notes and Records (Jan 2004), Henrici, A., 2004
Microsphaera azaleae, the perfect state of the Rhododendron mildew in England, Ing, B., 2000
/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Erysiphe azaleae/Erysiphe azaleaea powdery mildewmainly hypophyllousconidial anamorph Foodplant / parasiteUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf mainly hypophyllous conidial anamorph parasitises live leaf
leaf (live) live leaf is parasitised by cleistothecium UK/Ireland Erysiphe azaleae a powdery mildew Erysiphales: Erysiphaceae Notes and Records (Jan 2004), Henrici, A., 2004
Microsphaera azaleae, the perfect state of the Rhododendron mildew in England, Ing, B., 2000
/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Erysiphe azaleae/Erysiphe azaleaea powdery mildewcleistothecium Foodplant / parasiteUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf cleistothecium parasitises live leaf
leaf (live) live leaf is spotted by concentrically arranged acervulus of Gloeosporium coelomycetous anamorph Glomerella cingulata Willow Black Canker - causative organism Glomerellaceae 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/Sordariomycetes/Glomerellaceae/Glomerella cingulata/Glomerella cingulatawillow black canker (causative organism)concentrically arrangedacervulusGloeosporium coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf concentrically arranged acervulus of Gloeosporium coelomycetous anamorph causes spots on live leaf
leaf (live) live leaf is spotted by acervulus of Monochaetia coelomycetous anamorph Monochaetia karstenii a coelomycete Xylariales: Amphisphaeriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Xylariales/Amphisphaeriaceae/Monochaetia karstenii/Monochaetia karsteniia coelomyceteacervulusMonochaetia coelomycetous anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf acervulus of Monochaetia coelomycetous anamorph causes spots on live leaf
leaf (live) live leaf is parasitised by mostly hypophyllous uredium UK/Ireland Chrysomyxa rhododendri Rhododendron Rust Pucciniales: Coleosporiaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
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/Pucciniomycetes/Pucciniales/Coleosporiaceae/Chrysomyxa rhododendri/Chrysomyxa rhododendrirhododendron rustmostly hypophyllousuredium Foodplant / parasiteUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf mostly hypophyllous uredium parasitises live leaf
leaf (live) live leaf is parasitised by mostly hypophyllous telium UK/Ireland Chrysomyxa rhododendri Rhododendron Rust Pucciniales: Coleosporiaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
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/Pucciniomycetes/Pucciniales/Coleosporiaceae/Chrysomyxa rhododendri/Chrysomyxa rhododendrirhododendron rustmostly hypophylloustelium Foodplant / parasiteUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf mostly hypophyllous telium parasitises live leaf
leaf (live) live leaf is galled by fruitbody UK/Ireland Exobasidium japonicum Azalea Gall Exobasidiales: Exobasidiaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
Exobasidium in the British Isles, Ing, B., 1998
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/Exobasidiales/Exobasidiaceae/Exobasidium japonicum/Exobasidium japonicumazalea gallfruitbody Foodplant / gallUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf fruitbody causes gall of live leaf
leaf (live) live leaf may have epiphytic epiphyllous thallus Cephaleuros a genus of algal leaf spots Trentepohliales: Trentepohliaceae Algal leaf spot - Cephaleuros species, Anon., 2009
The Freshwater Algal Flora of the British Isles, John, D.M., Whitton, B.A. & Brook, A.J., 2002
/Plantae/Chlorophyta/Ulvophyceae/Trentepohliales/Trentepohliaceae/Cephaleuros/Cephaleurosa genus of algal leaf spotsepiphyllousthallus Plant / epiphyte /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveleaf epiphyllous thallus grows on live leaf
leaf (newly dead) newly dead leaf is spotted by pycnidial anamorph Phyllosticta philoprina an ascomycete Botryosphaeriales: Phyllostictaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Botryosphaeriales/Phyllostictaceae/Phyllosticta philoprina/Phyllosticta philoprinaan ascomycetepycnidial anamorph Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasnewly deadleaf pycnidial anamorph causes spots on newly dead leaf
leaf (newly dead) newly dead leaf is spotted by immersed pseudothecium Phyllosticta philoprina an ascomycete Botryosphaeriales: Phyllostictaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Botryosphaeriales/Phyllostictaceae/Phyllosticta philoprina/Phyllosticta philoprinaan ascomyceteimmersedpseudothecium Foodplant / spot causer /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasnewly deadleaf (2-9)immersed pseudothecium causes spots on newly dead leaf
leaf (semicircular or oblong pieces of live) semicircular or oblong pieces of live leaf is used to build or strengthen the nest by female Megachile leaf-cutter and mud bees Hymenoptera: Megachilidae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Animalia/Arthropoda/Insecta/Hymenoptera/Megachilidae/Megachile/Megachileleaf-cutter and mud beesfemale Plant / nest /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleassemicircular or oblong pieces of liveleaf female builds nest using semicircular or oblong pieces of live leaf
log (decayed) decayed log is decayed by fruitbody UK/Ireland Crepidotus applanatus var applanatus Flat Oysterling Agaricales: Inocybaceae 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/Agaricales/Inocybaceae/Crepidotus applanatus var. applanatus/Crepidotus applanatus var. applanatusflat oysterlingfruitbody Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdecayedlog fruitbody is saprobic on decayed log
petal (dead, fallen, collapsed, rotting) dead, fallen, collapsed, rotting petal is decayed by sclerotium UK/Ireland Ovulinia azaleae Rhododendron Petal Blight - causative organism Helotiales: Sclerotiniaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
Fungal foes in your garden no 58: Petal Blight on Azalea, Fox, R.T.V., 2004
/Fungi/Ascomycota/Leotiomycetes/Helotiales/Sclerotiniaceae/Ovulinia azaleae/Ovulinia azaleaerhododendron petal blight (causative organism)sclerotium Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, fallen, collapsed, rottingpetal (autumn)sclerotium is saprobic on dead, fallen, collapsed, rotting petal
petal (live, wilting) live, wilting petal is spotted by Ovulitis anamorph UK/Ireland Ovulinia azaleae Rhododendron Petal Blight - causative organism Helotiales: Sclerotiniaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
Fungal foes in your garden no 58: Petal Blight on Azalea, Fox, R.T.V., 2004
/Fungi/Ascomycota/Leotiomycetes/Helotiales/Sclerotiniaceae/Ovulinia azaleae/Ovulinia azaleaerhododendron petal blight (causative organism)Ovulitis anamorph Foodplant / spot causerUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleaslive, wiltingpetal (5-9)Ovulitis anamorph causes spots on live, wilting petal
root (live) live root is endomycorrhizal host of mycelium UK/Ireland Oidiodendron maius a dematiaceous hyphomycete Onygenales: Myxotrichaceae Physiological and morphological variations in Oidiodendron maius, Rice, A.V. & Currah, R.S., 2001
/Fungi/Ascomycota/Eurotiomycetes/Onygenales/Myxotrichaceae/Oidiodendron maius/Oidiodendron maiusa dematiaceous hyphomycetemycelium Foodplant / mycorrhiza / endomycorrhizaUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasliveroot mycelium is endomycorrhizal with live root
stem (base, esp.) stem (base, esp.) is galled by Rhizobium radiobacter Crown Gall - causative organism Rhizobiales: Rhizobiaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Proteobacteria/Alphaproteobacteria/Rhizobiales/Rhizobiaceae/Rhizobium radiobacter/Rhizobium radiobactercrown gall (causative organism) Foodplant / gall /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasstem (base, esp.) causes gall of stem (base, esp.)
stem stem may be infected and damaged by basidiome Chondrostereum purpureum Silverleaf Fungus, Silver Leaf Disease Agaricales: Cyphellaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
/Fungi/Basidiomycota/Agaricomycetes/Agaricales/Cyphellaceae/Chondrostereum purpureum/Chondrostereum purpureumsilverleaf fungus, silver leaf diseasebasidiome Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasstem basidiome infects and damages stem
stump (large) (dead, decayed) dead, decayed stump (large) is decayed by caespitose fruitbody Rare Psathyrella piluliformis Common Stump Brittlestem Agaricales: Psathyrellaceae 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/Agaricales/Psathyrellaceae/Psathyrella piluliformis/Psathyrella piluliformiscommon stump brittlestemcaespitosefruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, decayedstump (large)Rare caespitose fruitbody is saprobic on dead, decayed stump (large)
trunk (large) (dead, decayed) dead, decayed trunk (large) is decayed by caespitose fruitbody Rare Psathyrella piluliformis Common Stump Brittlestem Agaricales: Psathyrellaceae 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/Agaricales/Psathyrellaceae/Psathyrella piluliformis/Psathyrella piluliformiscommon stump brittlestemcaespitosefruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, decayedtrunk (large)Rare caespitose fruitbody is saprobic on dead, decayed trunk (large)
trunk (decayed, fallen) decayed, fallen trunk is decayed by fruitbody UK/Ireland Crepidotus applanatus var applanatus Flat Oysterling Agaricales: Inocybaceae 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/Agaricales/Inocybaceae/Crepidotus applanatus var. applanatus/Crepidotus applanatus var. applanatusflat oysterlingfruitbody Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdecayed, fallentrunk fruitbody is saprobic on decayed, fallen trunk
twig (bark) (attached) attached twig (bark) is decayed by opening by slit pseudothecium Lembosina aulographoides an ascomycete Asterinales: Asterinaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Asterinales/Asterinaceae/Lembosina aulographoides/Lembosina aulographoidesan ascomyceteopening by slitpseudothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasattachedtwig (bark) (2-6)opening by slit pseudothecium is saprobic on attached twig (bark)
twig twig may be infected and damaged by coremium of Pycnostysanus dematiacous anamorph UK/IrelandRestricted Seifertia azaleae Rhododendron Bud Blast and Twig Blight - causative organism Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Seifertia azaleae/Seifertia azaleaerhododendron bud blast and twig blight (causative organism)coremiumPycnostysanus dematiacous anamorph Foodplant / pathogenUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleastwigSole coremium of Pycnostysanus dematiacous anamorph infects and damages twig
twig (cankered) cankered twig is swollen by mycelium UK/IrelandMajor Phytophthora alni Sudden Oak Death - causative organism, SOD, Phytophthora Disease Of Alder Peronosporales: Peronosporaceae Phytophthora ramorum: one pathogen and many diseases, an emerging threat to forest ecosystems and ornamental plant life, Appiah, A., Jennings, P., & Turner, J.A., 2004
First report of Ramorum dieback (Phytophthora ramorum) on Hamamelis virginiana in the UK, Giltrap, P.M. et al, 2004
/Chromista/Oomycota/Peronosporea/Peronosporales/Peronosporaceae/Phytophthora alni/Phytophthora alnisudden oak death (causative organism), SOD, phytophthora disease of aldermycelium Foodplant / false gallUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleascankeredtwigMajor mycelium causes swelling of cankered twig
twig (dead, often grey or purple stained) dead, often grey or purple stained twig is decayed by effuse colony of Triposporium dematiaceous anamorph Triposporium elegans a dematiaceous anamorphic fungus Asterinales: Asterinaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Asterinales/Asterinaceae/Triposporium elegans/Triposporium elegansa dematiaceous anamorphic funguseffusecolonyTriposporium dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, often grey or purple stainedtwig (1-12)effuse colony of Triposporium dematiaceous anamorph is saprobic on dead, often grey or purple stained twig
twig (dead) dead twig is decayed by hysterothecium Gloniopsis praelonga an ascomycete Hysteriales: Hysteriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Hysteriales/Hysteriaceae/Gloniopsis praelonga/Gloniopsis praelongaan ascomycetehysterothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadtwig (1-12)hysterothecium is saprobic on dead twig
twig (dead) dead twig is decayed by superficial, subiculate pseudothecium Protoventuria arxii an ascomycete Venturiales: Venturiaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Venturiales/Venturiaceae/Protoventuria arxii/Protoventuria arxiian ascomycetesuperficial, subiculatepseudothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadtwig (5)superficial, subiculate pseudothecium is saprobic on dead twig
twig (dead) dead twig is decayed by effuse colony of Belemnospora dematiaceous anamorph Belemnospora verruculosa a dematiaceous anamorphic fungus Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Belemnospora verruculosa/Belemnospora verruculosaa dematiaceous anamorphic funguseffusecolonyBelemnospora dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadtwig effuse colony of Belemnospora dematiaceous anamorph is saprobic on dead twig
twig (fallen, dead) fallen, dead twig is decayed by effuse colony of Helminthosporium dematiaceous anamorph Helminthosporium velutinum a dematiaceous anamorphic fungus Pleosporales: Massarinaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Dothideomycetes/Pleosporales/Massarinaceae/Helminthosporium velutinum/Helminthosporium velutinuma dematiaceous anamorphic funguseffusecolonyHelminthosporium dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasfallen, deadtwig effuse colony of Helminthosporium dematiaceous anamorph is saprobic on fallen, dead twig
wood wood is decayed by 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 pyrenomyceteperithecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleaswood perithecium is saprobic on wood
wood wood is decayed by effuse colony of Mariannaea anamorph Mariannaea elegans an anamorphic fungus Hypocreales: Nectriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Hypocreales/Nectriaceae/Mariannaea elegans/Mariannaea elegansan anamorphic funguseffusecolonyMariannaea anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleaswood effuse colony of Mariannaea anamorph is saprobic on wood
wood wood is decayed by effuse colony of Veronaea dematiaceous anamorph Veronaea botryosa a dematiaceous anamorphic fungus Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Veronaea botryosa/Veronaea botryosaa dematiaceous anamorphic funguseffusecolonyVeronaea dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleaswood effuse colony of Veronaea dematiaceous anamorph is saprobic on wood
wood (dead, decayed) dead, decayed wood is decayed by caespitose fruitbody Rare Psathyrella piluliformis Common Stump Brittlestem Agaricales: Psathyrellaceae 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/Agaricales/Psathyrellaceae/Psathyrella piluliformis/Psathyrella piluliformiscommon stump brittlestemcaespitosefruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, decayedwoodRare caespitose fruitbody is saprobic on dead, decayed wood
wood (dead, decayed) dead, decayed wood is decayed by fruitbody Rare Scytinostroma ochroleucum a resupinate fungus Russulales: Lachnocladiaceae 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/Russulales/Lachnocladiaceae/Scytinostroma ochroleucum/Scytinostroma ochroleucuma resupinate fungusfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, decayedwoodRare fruitbody is saprobic on dead, decayed wood
wood (dead, rotten) dead, rotten wood is decayed by effuse colony of Brachysporium dematiaceous anamorph Brachysporium dingleyae a dematiaceous anamorphic fungus Trichosphaeriales: Trichosphaeriaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Sordariomycetes/Trichosphaeriales/Trichosphaeriaceae/Brachysporium dingleyae/Brachysporium dingleyaea dematiaceous anamorphic funguseffusecolonyBrachysporium dematiaceous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdead, rottenwood (4-9)effuse colony of Brachysporium dematiaceous anamorph is saprobic on dead, rotten wood
wood (dead) dead wood is foodplant of UK/Ireland Rhopalomesites tardii Holly Weevil Coleoptera: Curculionidae True Weevils (Part I): Family Curculionidae, subfamilies Raymondionyminae to Smicronychinae, Morris, M.G., 2002
/Animalia/Arthropoda/Insecta/Coleoptera/Curculionidae/Rhopalomesites tardii/Rhopalomesites tardiiholly weevil Foodplant / feeds onUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadwood feeds on dead wood
wood (dead) dead wood is decayed by sessile apothecium Mollisia cinerea Common Grey Disco Helotiales: Dermateaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Leotiomycetes/Helotiales/Dermateaceae/Mollisia cinerea/Mollisia cinereacommon grey discosessileapothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadwood (1-12)sessile apothecium is saprobic on dead wood
wood (dead) dead wood is decayed by apothecium Minor Hyaloscypha leuconica a discomycete Helotiales: Hyaloscyphaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Leotiomycetes/Helotiales/Hyaloscyphaceae/Hyaloscypha leuconica/Hyaloscypha leuconicaa discomyceteapothecium Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadwoodMinor (1-12)apothecium is saprobic on dead wood
wood (dead) dead wood is decayed by synnema of Graphium dematiacous anamorph Dendrostilbella smaragdina a discomycete Helotiales: Tympanidaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Leotiomycetes/Helotiales/Tympanidaceae/Dendrostilbella smaragdina/Dendrostilbella smaragdinaa discomycetesynnemaGraphium dematiacous anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadwood (3-8)synnema of Graphium dematiacous anamorph is saprobic on dead wood
wood (dead) dead wood is decayed by effuse colony of Acladium anamorph Botryobasidium conspersum a resupinate fungus Cantharellales: Botryobasidiaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Basidiomycota/Agaricomycetes/Cantharellales/Botryobasidiaceae/Botryobasidium conspersum/Botryobasidium conspersuma resupinate funguseffusecolonyAcladium anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdeadwood effuse colony of Acladium anamorph is saprobic on dead wood
wood (decayed) decayed wood is decayed by fruitbody UK/Ireland Crepidotus applanatus var applanatus Flat Oysterling Agaricales: Inocybaceae 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/Agaricales/Inocybaceae/Crepidotus applanatus var. applanatus/Crepidotus applanatus var. applanatusflat oysterlingfruitbody Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdecayedwood fruitbody is saprobic on decayed wood
wood (decayed) decayed wood is decayed by fruitbody UK/Ireland Calocera pallidospathulata Pale Stagshorn Dacrymycetales: Dacrymycetaceae 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/Dacrymycetales/Dacrymycetaceae/Calocera pallidospathulata/Calocera pallidospathulatapale stagshornfruitbody Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasdecayedwood (1-12)fruitbody is saprobic on decayed wood
wood (rotten) rotten wood is decayed by solitary or in small groups, erumpent bcoming more or less superficial ascocarp Capronia pleiospora an ascomycete Chaetothyriales: Herpotrichiellaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Ascomycota/Eurotiomycetes/Chaetothyriales/Herpotrichiellaceae/Capronia pleiospora/Capronia pleiosporaan ascomycetesolitary or in small groups, erumpent bcoming more or less superficialascocarp Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasrottenwood solitary or in small groups, erumpent bcoming more or less superficial ascocarp is saprobic on rotten wood
wood (rotten) rotten wood is decayed by effuse colony of Alysidium anamorph Botryobasidium candicans a resupinate fungus Cantharellales: Botryobasidiaceae Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
/Fungi/Basidiomycota/Agaricomycetes/Cantharellales/Botryobasidiaceae/Botryobasidium candicans/Botryobasidium candicansa resupinate funguseffusecolonyAlysidium anamorph Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Rhododendron/Rhododendronrhododendrons and azaleasrottenwood (1-12)effuse colony of Alysidium anamorph is saprobic on rotten wood

Author & YearTitleSource
RHSRHS Gardening For Allwww.rhs.org.uk/index.asp
Anon., 2008Phytophthora diseases of treesPlant Clinic News May 08: 1.
Anon., 2009Cottony camellia scale, an increasingly important horticultural pestPlant Clinic News June 09: 1.
Anon., 2009Algal leaf spot - Cephaleuros speciesPlant Clinic News June 09: 2.
Appiah, A., Jennings, P., & Turner, J.A., 2004Phytophthora ramorum: one pathogen and many diseases, an emerging threat to forest ecosystems and ornamental plant lifeMycologist Vol 18 (4): 145-150.
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
Fox, R.T.V., 2004Fungal foes in your garden no 58: Petal Blight on AzaleaMycologist Vol 18 (4): 175-6.
Giltrap, P.M. et al, 2004First report of Ramorum dieback (Phytophthora ramorum) on Hamamelis virginiana in the UKNew Disease Reports Vol 9.
Grove, W.B., 1935British Stem- and Leaf- Fungi: Coelomycetes Vol. I … Sphaeropsidales with hyaline conidiaVol I, 488pp, Cambridge University Press
Hawksworth, D.L., Henrici, A. & Kirk, P.M., 1999Melanospora pegleri, a new species from fallen Laurus and other leaves in the British IslesKew Bulletin Vol 54 (3): 795-799.
Henrici, A., 2004Notes and Records (Jan 2004)Field Mycology Vol 5 (1): 28-30,33.
Ing, B., 1998Exobasidium in the British IslesMycologist Vol 12 (2): 80-82.
Ing, B., 2000Microsphaera azaleae, the perfect state of the Rhododendron mildew in EnglandMycologist Vol 14 (4): 165.
John, D.M., Whitton, B.A. & Brook, A.J., 2002The Freshwater Algal Flora of the British Isles702pp, 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
MacLeod, A., 2006CSL Pest Risk Analysis for Stephanitis takeyaiPRAs for consultation on pest risk management PRAs for consultation on pest risk management.
Moore, W.C., 1959British Parasitic Fungi430pp, Cambridge University Press
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
Rice, A.V. & Currah, R.S., 2001Physiological and morphological variations in Oidiodendron maiusMycotaxon 79: 383-396.
Salisbury, A. & Malumphy, C., 2017Changes in status and distribution of Hydrangea Scale, Pulvinaria hydrangeae (Hemiptera: Coccomorpha: Coccidae) in BritainBr. J. Ent. Nat. Hist. Vol 30: 145-153.
Southwood, T.R.E. & Leston, D., 1959Land and Water Bugs of the British IslesWayside & Woodland Series, 1959 edition, 436pp, Frederick Warne & Co. Ltd.

Rhododendron (rhododendrons and azaleas) 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 2 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 2 trophisms
Species 3 trophisms
Species 2 trophisms 1 references
Species 2 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 subtaxa 5 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 2 trophisms
Species 2 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species hybrid 2 trophisms
Species 3 trophisms
Species 1 trophisms
Species 3 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 2 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 4 trophisms
Species 1 trophisms
Species 1 references
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 38 trophisms 3 references
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 1 trophisms
Species 4 trophisms
Species 1 trophisms
Species 3 trophisms
Species 1 trophisms
Species 1 trophisms
Species hybrid 1 trophisms
Species hybrid 1 trophisms
Species 1 trophisms
Informal 9 trophisms
Taxonomic hierarchy:
GenusRhododendron (rhododendrons and azaleas)
FamilyERICACEAE (heaths, heathers, rhododendrons, azaleas & wintergeeens)
OrderERICALES (heaths, heathers, azaleas, primroses, loosestrifes and balsams)
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 Rhododendron (rhododendrons and azaleas)

Rhododendron (rhododendrons and azaleas) may be included in identification literature listed under the following higher taxa:

General Works

AuthorYearTitleSource
Henrici, A. 2004 Notes and Records (Jan 2004) Field Mycology Vol 5 (1): 28-30,33.

Literature listed under the following higher taxa may also be relevant to Rhododendron (rhododendrons and azaleas):

BioImagesBioImages (www.bioimages.org.uk) has 13 images of Rhododendron (rhododendrons and azaleas)
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