Empetrum nigrum, crowberry or black crowberry, is a species of Empetrum with a circumpolar distribution. It is usually dioecious, but there is a bisexual tetraploid subspecies, Empetrum nigrum ssp. hermaphroditum, that occurs in more northerly locations and at higher altitude. After waning popularity, E. nigrum is regaining its reputation as an edible fruit. It provides a steady crop and the gathering is relatively easy. Cooking enhances the flavor. The fruits make good pie and jam.