Ganoderma oregonense

Ganoderma oregonense

Ganoderma oregonense is a medium to large-sized polypore in the family Ganodermataceae. It is found on the wood of conifers in the Pacific Northwest and California.
Western Varnished Conk, Ganoderma oregonense. The distinguishing feature of this fungus from the similar appearing fungus, the Red-belted Conk (Fomitopsis pinicola), is that the spore deposit of G. oregonense is rusty brown (visible on the Rubus ursinus leaf which is under the top left fungus) while the spore deposit of F. pinicola is white to light yellow. Canada,Ganoderma oregonense,Geotagged,Spring,Western Varnished Conk

Appearance

Cap: 10–50+ cm across; 5–15+ cm deep; more or less semicircular in outline, or irregularly kidney-shaped; surface with a lacquered-looking outer crust; brownish red or reddish brown overall, with or without a few paler zones; bald.

Pore Surface: Whitish to pale brownish when young, becoming medium brown with age; bruising darker brown; with 2–4 circular pores per mm; tubes 1–3 cm deep.

Stem: Usually absent; when present lateral and stubby, lacquered, brownish red to reddish brown.

Flesh: Tough but not woody; whitish to creamy; without melanoid bands or concentric growth zones (see discussion).

Odor and Taste: Not distinctive.

Chemical Reactions: KOH instantly black on flesh.

Spore Print: Reddish brown.

Distribution

Pacific Northwest of the United States

Habitat

Saprobic and sometimes parasitic; growing alone or in groups on decaying conifer logs and stumps, or from the wounds of injured, living trees

References:

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Taxonomy
KingdomFungi
DivisionBasidiomycota
ClassAgaricomycetes
OrderPolyporales
FamilyGanodermataceae
GenusGanoderma
SpeciesGanoderma oregonense
Photographed in
Canada