Scientific name: Bjerkandera fumosa (Pers.:Fr.) Karst.
Derivation of name: Bjerkandera honors C. Bjerkander;
fumosa means "smoky" in reference to the pore surface.
Synonymy: Polyporus fumosus Per.:Fr.
Occurrence on wood substrate: Saprobic; solitary or in
overlapping clusters on dead deciduous wood; July through
Dimensions: Caps 3-15 cm wide; 2-10 cm long; 0.5-2 cm thick.
Upper surface: Whitish to tan; finely hairy or not.
Pore surface: Buff to smoky-gray, bruising darker; pores 2-5 per
Comments: Compare to Bjerkandera adusta. Bjerkandera
fumosa is thicker and generally has a lighter pore surface. Overholts
reports Bjerkandera fumosa has an anise scent or a disagreeable
Bjerkandera fumosa, similar to but not as
frequently encountered as Bjerkandera adusta.
Photo © Tom Volk.