Sweet flag can refer to several species of the genus Acorus and Iris: * Acorus americanus, American sweet flag * Acorus calamus, common sweet flag * Acorus gramineus, Japanese sweet flag or grassy-leaved sweet flag * Iris pallida, also called sweet iris * Iris pseudacorus, also called yellow flag This page is an index of articles on plant species (or higher taxonomic groups) with the same common name (vernacular name). If an internal link led you here, you may wish to edit the linking article so that it links directly to the intended article.