The flora of the genus Poria Pers. ex Gray fron Taiwan has been studied through the wide-range field survey since 1973. The following six species of the resupinate growth habit of poroid fungi are reported first time from this Island: Poria reticulata (Pers. ex Fries) Cooke, P. nigrescens Bres., P. cameolutea Rodway & Clcland, P. versipora (Pers.) Rom., P. cineroscens (Bres.) Sacc., and P. nigra (Berk.) Cooke. P. nigra causes a brown rot of wood and others arc the white rotters.