Cortinarius corpulentus is a species of mushroom in the family Cortinariaceae.
The cap of Cortinarius corpulentus is purplish, often with an orangish spot at the center. It is slimy when wet and about 4âÂÂ13 centimeters in diameter. The stipe is about 5âÂÂ13 centimeters long and 1.5âÂÂ7.5 centimeters wide. It starts out white and later becomes orangish. The gills start out bluish and become tan and eventually brown as the mushroom gets older. They are adnexed and often notched.
Cortinarius corpulentus grows under douglas fir trees in Western North America.