Pachycudonia is a genus of mushroom-forming fungi in the family Cudoniaceae.[1] The Japanese mycologist Sanshi Imai originally proposed it as a section of the genus Cudonia, basing it on the species Cudonia constrictospora, and describing the main characteristic of the genus as Pileus convexo-hemiglobosus vel depresso-convexus, crassus ("Pileus convex to hemispherical or depressed-convex, thick.") He later promoted it to distinct genus status in 1950.[2] Pachycudonia has three species:[1]
- Pachycudonia constrictospora (S.Ito & S.Imai) S.Imai (1950)
- Pachycudonia monticola (Mains) S.Imai (1950)
- Pachycudonia spathulata (S.Imai) S.Imai (1950)
| Pachycudonia | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Leotiomycetes |
| Order: | Rhytismatales |
| Family: | Cudoniaceae |
| Genus: | Pachycudonia S.Imai (1950) |
| Type species | |
| Pachycudonia constrictospora (S.Ito & S.Imai) S.Imai (1950) | |
The distribution of the genus, when described by Imai in 1955, was restricted to Japan and the Pacific coast of North America.