User:Sasata/Sandbox/Polyporus badius

Polyporus badius, commonly known as the black-footed polypore, is a species of fungi in the genus Polyporus. This species causes a white rot of dead hardwoods and conifers.

Description
Fruiting bodies of this species tend to be erect, growing solitary of in groups, sometimes with two or more fruiting bodies arising from a common stipe. The cap is round or kidney-shaped, often lobed or with a wavy margin. When young, the fruiting bodies are convex, then become flat or funnel-shaped in maturity, having dimensions of 5 to 25 cm by 1-4 mm thick. The upper cap surface is smooth, glossy, and with radial wrinkles when old. The color of the cap is brown, often darker in the center of the cap and lighter-colored at the margins. The lower surface is white or cream-colored, yellowing when old. Pores are round, 6-8 per mm, with decurrent tubes. The stipe, attached centrally or laterially, is 2 to 8 cm long by 0.5 to 1.5 cmthick, velvety and dark brown to blackish brown, black and longitudinally wrinkled when old.

Microscopic features
Spores are ellipsoid or cylindrical, hyaline, smooth, and 7.5-9 x 3-5 µm. The basidia are club-shaped with a narrow base, and have dimensions of 20–30 &times; 7–9 um.

Habitat and distribution
This species grows on standing or fallen trunks and branches of various hardwood genera, including Acer, Aesculus, Alnus, Betula, Castanea, Fagus,Fraxinus, Populus, Prunus, Robinia, Quercus, Salix, Tilia and Ulmus.