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Root Fomes

A common fungus of conifers that kills the tree.


  • Root Rot: rotten to the core

    Post date: Thursday, 13 November, 2014 - 00:00

    Some species of fungi attack dying or dead wood and act as an agent to break down the waste material; others are more deadly attacking healthy trees and killing them. Root rot (Heterobasidion annosum) is one of the latter and is a preditor of conifers although it can occur on broad-leaved trees as well. It causes a very serious white decaying of the inside of the tree, the brackets are the visible fruiting bodies and can be seen at any time of the year.

    A common species, the brackets appear near the base of the trunk (and can be obscurred by other vegetation) all year round and there are usually more than one of them. Being at the base of the tree it looks as though the roots are 'foaming', hence its other common name, root fomes.

    This is certainly not one for the frying pan! My book says it smells like emulsion paint!


Common Name Root Fomes
Alternative Name(s) Root Rot
Scientific Name Heterobasidion annosum
Species Group Bracket Fungi
Interest Level
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Identification Notes
Primary Habitat
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Additional Identification Notes
Similar Species

The records for this species have been organised into reports, charts, maps and photos. Click a pic below to see the detail:

Notebook Distribution Map Sites List Some Charts Some Photographs Recent Records Guidance Notes

To see related species click here: 

Bracket Fungi