 The genus name combines the Latin word "perennis" ("perennial") with the genus name "Poria Edalat".Murrill's designated type species, "P. unita", had a broad and poorly defined species concept that included other species, including "Perenniporia medulla-panis".Additionally, "P. unita" was discovered to be a "nomen dubium", which also threatened the validity of the genus "Perenniporia".