Wisconsin Department of Natural Resources, Heteribasidion Root Disease (HRD) ([Internet, 2023-04-28](https://dnr.wisconsin.gov/topic/foresthealth/annosumrootrot))
EXP: the fungus Heterobasidion annosum causes ARR, formerly called Fomes annosus; USG: obsolete
Alabama Forestry Commission, Annosus Root Rot ([Internet, 2023-04-28](https://www.forestry.alabama.gov/Pages/Informational/Diseases/Annosus_Root_Rot.aspx))