The young gills of this Cortinarius are orange, which helps to separate it from many similar species. Habitat in coniferous woods.

Cap hemispherical then broadly convex; brownish cinnamon, margin more yellow; fibrillose to minutely scaly. Gills Attached to the stem but sometimes pulling away from it in age; close; orange at first, becoming cinnamon to rusty. Stem middle slightly swollen at the base, soon hollow; bright yellow often with reddish area near the base; corona yellow. Flesh yellow. Odor slight. Taste slight.

Cortinarius malicorius on the MushroomExpert.Com Web site.