Cortinarius mucosus (Bull.) Cooke (1867)                             *Collections: Calfiornia & PNW

This member of Subgenus Myxacium is noted for its association to 2 needled pines. It is also very common in the high elevations of Sierra Nevada and the Rocky Mountains under Lodgepole Pine (Pinus contorta spp. latifolia).
The Montane Collections from Sierra Nevada and the Rockies (below) tend to be much paler.

Collection: Colorado Rockies

Spores:
(10.4) 12-16 x 6-7.8μ     Coarsely verrucose to wrinkled.

References