The large, semi-circular caps of the artists conk (Ganoderma brownii) stretch out from the timber of both living and dead trees. Unlike other mushrooms, the pores on their bottom surfaces are so small and tight that these fruitbodies can be utilized by artists as a canvas. Breaking one of these impressive caps off a tree is discouraged, however, as their astoundingly long lifespan is quite unique. If left undisturbed, a single mushroom may remain for multiple decades!
Cap Diameter:
5 - 25 cm
Odor:
Mildly mushroomy but not distinctive.
In This Article
Attributes
Similar Species
Tips for Finding
Clean and Preserve
Common Questions
General Info About Artists conk
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Attributes of Artists conk
Cap Diameter
5 - 25 cm
Cap
20 cm x 10 cm x 5 cm; semicircular, hoof-shaped; brown
Stem
Stemless
Flesh
Up to 4 cm thick; firm-fibrous; tough, woody to corky; dark purplish brown
Spore Print Color
Brown
Odor
Mildly mushroomy but not distinctive.
Body Color
Brown
Gray
Flesh Bruises
The flesh or milk does not discolor when bruised or cut.
The Ganoderma brownii occurs in woods, mostly deciduous, and it's particularly associated with California bay laurel (Umbellularia californica). It grows on living trees or standing dead trees, on stumps, logs, at the bases of trunks, or from the wounds of an injured tree.