| Thamnolia | |
|---|---|
| Thamnolia vermicularis in Sarntaler Alpen, Italy | |
| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Subdivision: | Pezizomycotina |
| Class: | Lecanoromycetes |
| Subclass: | Ostropomycetidae |
| Order: | Pertusariales |
| Family: | Icmadophilaceae |
| Genus: | Thamnolia |
Thamnolia is a genus of lichenized fungi in the family Icmadophilaceae. Members of the genus are commonly called whiteworm lichens.