| polyporus | (n) type genus of the Polyporaceae; includes important pathogens of e.g. birches and conifers, Syn. genus Polyporus |
| polyporus squamosus | (n) a fungus with a lateral stalk (when there is a stalk) and a scaly cap that becomes nearly black in maturity; widely distributed in the northern hemisphere, Syn. scaly polypore |
| polyporus tenuiculus | (n) a fungus with a whitish kidney-shaped cap and elongated pores; causes white rot in dead hardwoods |
| Polyporus | ‖n.; ☞ Polyporus fomentarius was formerly dried and cut in slices for tinder, called amadou. Polyporus betulinus is common in America, and forms very large thick white semicircular excrescences on birch trees. Several species of |