Daldinia is a genus of fungi belonging to the family Daldiniaceae. These fungi are typically found on decaying wood and are known for their distinctive black, hard fruiting bodies, which can resemble small, dark balls or irregular shapes. They play an important role in the ecosystem by breaking down wood and recycling nutrients. The most recognized species within this genus is Daldinia concentrica, commonly known as the "cramp ball" or "king Alfred's cake." This species is often found on dead or dying trees and can be identified by its rough, cracked surface. Daldinia fungi are not commonly used in culinary applications but are of interest in ecological studies.