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Dyer's Polypore (Phaeolus schweinitzii)

Dyer’s polypore is a large fungus associated primarily with conifer roots, especially Douglas fir. It is known both for its role as a wood-decay organism and for its historical use as a natural dye source producing yellows, golds, and browns.

Dyer's Polypore (Phaeolus schweinitzii)
Ecological Role

This species causes brown rot in conifers, selectively breaking down cellulose and leaving lignin behind. Its activity weakens host trees over time and contributes to structural complexity in forests. By altering wood chemistry, it influences habitat availability and successional dynamics.

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