| Generic short diagnoses:
Irregularly shaped, mostly pileate, perennial, white-rotting, parasitic polypores, typically fruiting at soil level, with spores with low, indistinct ornamentation and no clamp connections or cystidia. |
Species example: |

Heterobasidion annosum - DK: rodfordærver UK: Root Rot - young fruit-bodies |
Photo and © Jens H. Petersen Denmark, 1992?/JHP-99.347 |
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