Hemlock varnish shelf Ganoderma Tsugae

Ganoderma tsugae
Scientific name: Ganoderma tsugae Murrill
Derivation of name: Ganoderma means having a "shiny
or lustrous skin"; tsugae means hemlock (Tsuga), one of
its common hosts.
Synonymy: Polyporus tsugae (Murrill) Overh.
Common names: Hemlock varnish shelf.
Phylum: Basidiomycota
Order: Polyporales
Family: Ganodermataceae
Occurrence on wood substrate: Saprobic; solitary or in
overlapping clusters on living and dead conifer trunks and
on stumps and logs; May through November, but these
annuals may overwinter.
Dimensions: Caps 5-30 cm; stipes (if present) 2.5-15 cm
long and 1-4 cm thick.
Upper surface: Shiny reddish to brownish-orange varnish;
white margin; concentrially furrowed; surface becomes dull
when coated by deposited spores.
Flesh of cap: Whitish; soft when young, tougher later.
Pore surface: Whitish, becoming brown in age or when
bruised; pores 4-6 per mm.
Edibility: Inedible.