Urnula craterium is a species of fungi that is commonly known as the devil's urn or urn-shaped elfcup. This fungus belongs to the Ascomycota family and gets its name from its distinctive shape, which resembles an urn. The fruiting body of Urnula craterium is cup-shaped, and its color ranges from grayish-brown to black. This species of fungi plays an essential role in the decomposition of wood and is an important decomposer in forest ecosystems. Other names for Urnula craterium include Black Pagoda, Chalice Fungus, Devils Cup, Urn Fungus, and Urn-Shaped Elfcup. These synonyms are often used by mycologists and other members of the scientific community.