phellinus pomaceus fungus bracket fungus, phellinus igniarius on tree trunk

agaricomycetes aggressive apple basidiomycota bracket care cause common cut decay factor fungi fungus garden genus german hymenochaetaceae hymenochaetales igniarius incertae lactiporus maintenance nutrition old orchard parasitic pathogen pathogenic phellinus plant plum polypore polyporus pomaceus prunus saprotrophic sedis species sponge sponk stress suffering tinder touchwood tree trees trivialis trunk tuberculosus