Phellinus nigricans (Fr.) Karsten Bracket 4-14cm across, 2-9cm wide, 2-6cm thick at base, semicircular to elongated, triangular in section; zones of whitish, gray, or light cinnamon and concentrically grooved black zones; with a distinct crust, except on the margin, old parts deeply cracked, base often mossy. Tubes up to 5cm deep in layers; cinnamon to rusty brown, or filled with white mycelium in old parts. Pores 5-6 per mm, round; cinnamon to deep rusty brown or gray when weathered. No stem. Flesh up to l0mm thick, dense; rusty brown. Spores globose to subglobose, smooth, nonamyloid, 6-7 x 5.5-6.5µ. Habitat on deciduous wood, especially beech. Found in northern North America. Season perennial. Not edible.