| Name | Pycnothelia (Acharius) Dufour |
| Authorship | (Acharius) Dufour |
| Rank | Genus |
| NomenclaturalStatus | NomLeg |
| Placed in | Cladoniaceae |
| Contains | Pycnothelia papillaria (Ehrhart) Dufour Pycnothelia sp. |
| Remarks | Basionym: Cenomyces sect. Pycnothelia Acharius, Lichenogr. Suec. Prodr. 88. 1798 (post 20 Feb). Type: P. papillaria (Acharius) Dufour (Lichen papillaria Acharius) |
| Citation | May 1821 Ann. Gen. Sci. Phys. 8: 45 |