E. nigrum may refer to: * Empetrum nigrum, the black crowberry, a plant species native to most northern areas of the northern hemisphere * Epicoccum nigrum, a fungal plant pathogen species * Etheostoma nigrum, the Johnny darter, a fish speciesThis disambiguation page lists articles associated with the same abbreviated species scientific name. If an internal link led you here, you may wish to change the link to point directly to the intended article.