| Theissenia | |
|---|---|
| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Ascomycetes |
| Order: | Xylariales |
| Family: | Xylariaceae |
| Genus: |
Theissenia Maubl. |
| Type species | |
|
Theissenia pyrenocrata (Theiss.) Maubl. |
|
Theissenia is a genus of fungi in the family Xylariaceae.