Jew’S Ears, the popular name of a fungus, known botanically as Hirneola auricula-judae, so called from its shape, which somewhat resembles a human ear. It is very thin, flexible, flesh-coloured to dark brown, and one to three inches broad. It is common on branches of elder, which it often kills, and is also found on elm, willow, oak and other trees. It was formerly prescribed as a remedy for dropsy.