Rigidoporus ulmarius (Sowerby) Imazeki
(Elm Butt Rot - causative organism, Giant Elm Bracket)

Interactions where Rigidoporus ulmarius is the dominant partner and gains from the process

The following relationships have been collated from the published literature (see 'Interaction References').

Stage 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
fruitbody fruitbody infects and damages live trunk Sambucus nigra Elder Dipsacales: Adoxaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Dipsacales/Adoxaceae/Sambucus nigra/Sambucus nigraelderlivetrunk
fruitbody fruitbody is saprobic on dead, white-rotted stump Sambucus nigra Elder Dipsacales: Adoxaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Dipsacales/Adoxaceae/Sambucus nigra/Sambucus nigraelderdead, white-rottedstump
fruitbody fruitbody infects and damages live trunk Sambucus racemosa Red-berried Elder Dipsacales: Adoxaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Dipsacales/Adoxaceae/Sambucus racemosa/Sambucus racemosared-berried elderlivetrunk
fruitbody fruitbody is saprobic on dead, white-rotted stump Sambucus racemosa Red-berried Elder Dipsacales: Adoxaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Dipsacales/Adoxaceae/Sambucus racemosa/Sambucus racemosared-berried elderdead, white-rottedstump
fruitbody fruitbody infects and damages live trunk (large) Robinia pseudoacacia False Acacia, False-acacia, Locust Tree Fabales: Fabaceae Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
Profiles of Fungi No. 29: Rigidoporus ulmarius (Sow.:Fr.) Imazeki, Pegler, D.N., 1990
/Fungi/Basidiomycota/Agaricomycetes/Polyporales/Meripilaceae/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Fabales/Fabaceae/Robinia pseudoacacia/Robinia pseudoacaciafalse acacia, false-acacia, locust treelivetrunk (large)
fruitbody fruitbody is saprobic on dead, white-rotted stump (large) Robinia pseudoacacia False Acacia, False-acacia, Locust Tree Fabales: Fabaceae Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
Profiles of Fungi No. 29: Rigidoporus ulmarius (Sow.:Fr.) Imazeki, Pegler, D.N., 1990
/Fungi/Basidiomycota/Agaricomycetes/Polyporales/Meripilaceae/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Fabales/Fabaceae/Robinia pseudoacacia/Robinia pseudoacaciafalse acacia, false-acacia, locust treedead, white-rottedstump (large)
fruitbody fruitbody infects and damages live trunk (large) Fagus beeches Fagales: Fagaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Fagales/Fagaceae/Fagus/Fagusbeecheslivetrunk (large)
fruitbody fruitbody is saprobic on dead, white-rotted stump (large) Fagus beeches Fagales: Fagaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Fagales/Fagaceae/Fagus/Fagusbeechesdead, white-rottedstump (large)
fruitbody fruitbody infects and damages live trunk (large) Fraxinus ashes Lamiales: Oleaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Lamiales/Oleaceae/Fraxinus/Fraxinusasheslivetrunk (large)
fruitbody fruitbody is saprobic on dead, white-rotted trunk (large) Fraxinus ashes Lamiales: Oleaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Lamiales/Oleaceae/Fraxinus/Fraxinusashesdead, white-rottedtrunk (large)
fruitbody fruitbody is saprobic on dead, white-rotted stump (large) Fraxinus ashes Lamiales: Oleaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Lamiales/Oleaceae/Fraxinus/Fraxinusashesdead, white-rottedstump (large)
fruitbody fruitbody infects and damages live trunk (large) Populus alba x tremula = P. x canescens grey poplar Malpighiales: Salicaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Malpighiales/Salicaceae/Populus alba x tremula = P. x canescens/Populus alba x tremula = P. x canescensgrey poplarlivetrunk (large)
fruitbody fruitbody is saprobic on dead, white-rotted stump (large) Populus alba x tremula = P. x canescens grey poplar Malpighiales: Salicaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Malpighiales/Salicaceae/Populus alba x tremula = P. x canescens/Populus alba x tremula = P. x canescensgrey poplardead, white-rottedstump (large)
fruitbody fruitbody infects and damages live trunk (large) Populus nigra Black-poplar Malpighiales: Salicaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Malpighiales/Salicaceae/Populus nigra/Populus nigrablack-poplarlivetrunk (large)
fruitbody fruitbody is saprobic on dead, white-rotted stump (large) Populus nigra Black-poplar Malpighiales: Salicaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Malpighiales/Salicaceae/Populus nigra/Populus nigrablack-poplardead, white-rottedstump (large)
fruitbody fruitbody infects and damages live trunk (large) Tilia limes Malvales: Malvaceae Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
Profiles of Fungi No. 29: Rigidoporus ulmarius (Sow.:Fr.) Imazeki, Pegler, D.N., 1990
/Fungi/Basidiomycota/Agaricomycetes/Polyporales/Meripilaceae/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Malvales/Malvaceae/Tilia/Tilialimeslivetrunk (large)
fruitbody fruitbody is saprobic on dead, white-rotted stump (large) Tilia limes Malvales: Malvaceae Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
Profiles of Fungi No. 29: Rigidoporus ulmarius (Sow.:Fr.) Imazeki, Pegler, D.N., 1990
/Fungi/Basidiomycota/Agaricomycetes/Polyporales/Meripilaceae/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Malvales/Malvaceae/Tilia/Tilialimesdead, white-rottedstump (large)
fruitbody fruitbody infects and damages live trunk (large) Platanus plane trees Proteales: Platanaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Proteales/Platanaceae/Platanus/Platanusplane treeslivetrunk (large)
fruitbody fruitbody is saprobic on dead, white-rotted stump (large) Platanus plane trees Proteales: Platanaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Proteales/Platanaceae/Platanus/Platanusplane treesdead, white-rottedstump (large)
fruitbody fruitbody infects and damages live trunk (large) UK/IrelandMajor Ulmus elms Rosales: Ulmaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
Profiles of Fungi No. 29: Rigidoporus ulmarius (Sow.:Fr.) Imazeki, Pegler, D.N., 1990
/Fungi/Basidiomycota/Agaricomycetes/Polyporales/Meripilaceae/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / pathogenUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Rosales/Ulmaceae/Ulmus/Ulmuselmslivetrunk (large)Major
fruitbody fruitbody is saprobic on dead, white-rotted stump (large) UK/IrelandMajor Ulmus elms Rosales: Ulmaceae Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998
Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
Profiles of Fungi No. 29: Rigidoporus ulmarius (Sow.:Fr.) Imazeki, Pegler, D.N., 1990
/Fungi/Basidiomycota/Agaricomycetes/Polyporales/Meripilaceae/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / saprobeUK and/or Eire /Plantae/Tracheophyta/Magnoliopsida/Rosales/Ulmaceae/Ulmus/Ulmuselmsdead, white-rottedstump (large)Major
fruitbody fruitbody infects and damages live trunk Acer negundo Ashleaf Maple Sapindales: Sapindaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Sapindales/Sapindaceae/Acer negundo/Acer negundoashleaf maplelivetrunk
fruitbody fruitbody is saprobic on dead, white-rotted stump Acer negundo Ashleaf Maple Sapindales: Sapindaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Sapindales/Sapindaceae/Acer negundo/Acer negundoashleaf mapledead, white-rottedstump
fruitbody fruitbody infects and damages live trunk (large) Acer pseudoplatanus Sycamore, Great Maple Sapindales: Sapindaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Sapindales/Sapindaceae/Acer pseudoplatanus/Acer pseudoplatanussycamore, great maplelivetrunk (large)
fruitbody fruitbody is saprobic on dead, white-rotted stump (large) Acer pseudoplatanus Sycamore, Great Maple Sapindales: Sapindaceae 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/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Sapindales/Sapindaceae/Acer pseudoplatanus/Acer pseudoplatanussycamore, great mapledead, white-rottedstump (large)
fruitbody fruitbody infects and damages live trunk (large) Aesculus horse chestnuts Sapindales: Sapindaceae Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
Profiles of Fungi No. 29: Rigidoporus ulmarius (Sow.:Fr.) Imazeki, Pegler, D.N., 1990
/Fungi/Basidiomycota/Agaricomycetes/Polyporales/Meripilaceae/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Sapindales/Sapindaceae/Aesculus/Aesculushorse chestnutslivetrunk (large)
fruitbody fruitbody is saprobic on dead, white-rotted stump (large) Aesculus horse chestnuts Sapindales: Sapindaceae Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
Profiles of Fungi No. 29: Rigidoporus ulmarius (Sow.:Fr.) Imazeki, Pegler, D.N., 1990
/Fungi/Basidiomycota/Agaricomycetes/Polyporales/Meripilaceae/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketfruitbody Foodplant / saprobe /Plantae/Tracheophyta/Magnoliopsida/Sapindales/Sapindaceae/Aesculus/Aesculushorse chestnutsdead, white-rottedstump (large)

Interactions where Rigidoporus ulmarius 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
(dead, decayed) dead, decayed bracket is decayed by fruitbody Major Trechispora cohaerens a basidiomycete fungus Trechisporales: Hydnodontaceae 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/Trechisporales/Hydnodontaceae/Trechispora cohaerens/Trechispora cohaerensa basidiomycete fungusfruitbody Fungus / saprobe /Fungi/Basidiomycota/Agaricomycetes/Polyporales/Meripilaceae/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketdead, decayedbracketMajor fruitbody is saprobic on dead, decayed bracket
(dead, fallen, decayed) dead, fallen, decayed bracket is decayed by fruitbody Major Trechispora cohaerens a basidiomycete fungus Trechisporales: Hydnodontaceae 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/Trechisporales/Hydnodontaceae/Trechispora cohaerens/Trechispora cohaerensa basidiomycete fungusfruitbody Fungus / saprobe /Fungi/Basidiomycota/Agaricomycetes/Polyporales/Meripilaceae/Rigidoporus ulmarius/Rigidoporus ulmariuselm butt rot (causative organism), giant elm bracketdead, fallen, decayedbracketMajor fruitbody is saprobic on dead, fallen, decayed bracket

Author & YearTitleSource
Buczacki, S. & Harris, K., 1998Pests, Diseases & Disorders of Garden PlantsCollins Photoguide, 2nd edition edition, Collins
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
Pegler, D.N., 1990Profiles of Fungi No. 29: Rigidoporus ulmarius (Sow.:Fr.) ImazekiMycologist Vol 04 (3): 146.

Rigidoporus ulmarius (Elm Butt Rot - causative organism, Giant Elm Bracket) may also be included in 'feeds on' relations listed under the following higher taxa:

Rigidoporus ulmarius (Elm Butt Rot - causative organism, Giant Elm Bracket) may also be included in 'fed on by' relations listed under the following higher taxa:

Taxonomic hierarchy:
SpeciesRigidoporus ulmarius (Elm Butt Rot - causative organism, Giant Elm Bracket)
GenusRigidoporus (a genus of bracket fungi)
FamilyMERIPILACEAE (giant polypores)
OrderPOLYPORALES (polypores)
SubclassAGARICOMYCETIDAE (a subclass of basidiomycetes)
ClassAGARICOMYCETES (a class of fungi)
SubphylumAGARICOMYCOTINA (a subphylum of fungi)
PhylumBASIDIOMYCOTA (spore droppers, basidiomycetes)
KingdomFUNGI (true fungi)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
NBNNBN (data.nbn.org.uk) has a distribution map for Rigidoporus ulmarius (Elm Butt Rot - causative organism, Giant Elm Bracket)

Identification Works

Handling & MagnificationAuthorYearTitleSource
Pegler, D.N. 1990 Profiles of Fungi No. 29: Rigidoporus ulmarius (Sow.:Fr.) Imazeki Mycologist Vol 04 (3): 146.

Rigidoporus ulmarius (Elm Butt Rot - causative organism, Giant Elm Bracket) may also be included in identification literature listed under the following higher taxa:

Literature listed under the following higher taxa may be relevant to Rigidoporus ulmarius (Elm Butt Rot - causative organism, Giant Elm Bracket):

BioImagesBioImages (www.bioimages.org.uk) has 16 images of Rigidoporus ulmarius (Elm Butt Rot - causative organism, Giant Elm Bracket)
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