Pachycudonia

Pachycudonia is a genus of mushroom-forming fungi in the family Cudoniaceae. 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. Pachycudonia has three species: Pachycudonia constrictospora (S.Ito & S.Imai) S.Imai (1950) Pachycudonia monticola (Mains) S.Imai (1950) Pachycudonia spathulata (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....read more on Wikipedia.