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1 species
Large, rosette-forming polypores that cause butt rot of trees and are related to Russula and Lactarius rather than to most polypores. Their spores are round with amyloid spines or ridges.
Rosettes of large caps from a common tough base; pore surface whitish; spores globose to subglobose with amyloid ornamentation; hyphal system dimitic. B. berkeleyi grows on hardwoods in the East; B. occidentalis on conifers in the West.
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