Shelf bracket fungus

''Heterobasidion annosum''
Mycological characteristics
pores on hymenium

no distinct cap
or offset
hymenium is decurrent

lacks a stipe
or is bare
spore print is white
ecology is parasitic
edibility: inedible

''Heterobasidion annosum'' is a basidiomycete fungus in the family Bondarzewiaceae. It is considered to be the most economically important forest pathogen in the Northern Hemisphere. ''Heterobasidion annosum'' is widespread.. more