Page author: Julie Jones
Porphyrellus porphyrosporus
dark bolete, dusky bolete
WTU specimens
Other herbaria

Distribution: Widespread but not abundant.

Habitat: P. porphyrosporus occurs in coastal and low elevation conifer forests.

Conservation Status: Not of concern

Description:
Common Names:

dark bolete, dusky bolete

Identification Notes:

Porphyrellus porphyrosporus is easy to recognize, but harder to name. The combination of a black to dark brown velvety cap, often with a paler margin, dark brown to black tubes and pores, dark brown to almost black stipe with a white base, and blue to blue-green staining reaction separate it easily from other boletes in our region. It has deep reddish brown spores which also is helpful in identification. In western North America it also has been called Tylopilus pseudoscaber and elsewhere has gone by Porphyrellus pseudoscaber. Recent studies have shown that tylopiluses are not its closest relatives. Although a few species of Tylopilus have been reported from California, they are uncommon there and rare at most in the PNW.

Accepted Name:
Porphyrellus porphyrosporus (Fr.) E.-J. Gilbert

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Porphyrellus porphyrosporus in the Consortium of Pacific Northwest Herbaria database.

CalPhotos: Porphyrellus porphyrosporus photos.

4 photographs:
Group by