About Ciboria amentacea (Balb.) Fuckel
Ciboria amentacea, commonly called the catkin cup, is an ascomycete fungus species that belongs to the family Sclerotiniaceae. Giovanni Battista Balbis first formally described this species in 1804, under the name Peziza amentacea. In 1870, Karl Wilhelm Gottlieb Leopold Fuckel reclassified the species, moving it to the genus Ciboria to get its current scientific name. The cup-shaped cap of this fungus can grow up to 1.2 centimetres, or 1/2 inch, across. Ciboria amentacea is widespread across Europe and North America, and it grows on the catkins of willow and alder plants.
