Heterobasidion

Heterobasidion Bref., Unters. Gesammtgeb.Mykol. (Liepzig) 8: 154 (1888) Background Heterobasidion was introduced by Brefeld (1888) and is typified by H. annosum (≡ Polyporus annosus). Certain Heterobasidion species are important forest pathogens of the Northern Hemisphere, causing root and butt rot, mainly in conifers (Woodward et al. 1998)....