Cortinarius infractus var. obscurocyaneus
Docums Mycol. 21(83): 10. 1991.
Common Name: none
For description see Bon & Lefebvre & 'California Mushrooms'.
Solitary to scattered in soil in mixed hardwood-conifer forests; common, fruiting from fall through mid-winter, widely distributed.
Unknown.
Cortinarius infractus can be recognized by a sooty olive cap, olive young gills, white context tissues, and a cylindrical to clavate (not bulbous), white to pale olive-gray stipe. If the stipe apex is white, it is var. infractus, whereas if the stipe apex is blue, as commonly encountered in California under oaks, it is var. obscurocyaneus. Members of the Cortinarius scaurus complex shares the olive colors of cap and gills but have a bulbous stipe and context tissues with blue, violet, or olive shades.
Bon, M.; Lefebvre, B. 1991. Commentaires nomenclaturaux. Documents Mycologiques. 21(83): 10. (PDF)
Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
Siegel, N. & Schwarz, C. (2016). Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.