Red ring rot
Found growing singularly or in clusters along the stem of the host tree – sometimes on or adjacent to wounds (photo a,b). Cankers may develop adjacent to or in the absence of brackets.
Perennial. Tough and woody. Often in clusters with fruiting bodies of various sizes – can become quite large (photo a). Smaller resupinate fruit bodies are typical of the old Phellinus genus. Red-brown on the upper surface – sometimes concentrically zoned. Roughened. Pore layer golden yellow-brown. Tubes slotted and sometimes elongated. Flesh golden brown.
Considered parasitic on host trees – can persist after tree death and otherwise be localised to dysfunctional areas. Scope exists to cause longitudinal decay columns. Attributed to a selective white (pocket) rot of heartwood. Failure of the colonised tree part is foreseeable once fruiting occurs and therefore wood strength may need to be quantified, where targets exist.