Family Coprinaceae is a group of fungi that includes many familiar species such as the ink cap mushroom. This family has a unique characteristic of producing a black liquid-like substance that gives them their common name of "inky cap" fungi. The Coprinaceae family includes many edible and medicinal mushrooms, but also some poisonous species that should be avoided. Some synonyms for this family include the Agaricaceae family, which includes many popular culinary mushrooms such as the Amanita mushroom. The Psathyrellaceae family is also closely related to the Coprinaceae family, and has similar characteristics. These families are fascinating and diverse, with many interesting members to explore.