Heterobasidion annosum is widespread in forests in the United States and is responsible for the loss of one billion U.S. dollars annually. This fungus has been known by many different names. First described by Fries in 1821, it was known by the name Polyporus annosum.
The fungus Heterobasidion annosum is prevalent in American forests, resulting in a yearly financial loss of approximately one billion U.S. dollars, and has been referred to by multiple names throughout its history. First documented by Fries in 1821 under the name Polyporus annosum.