Suillus sp. are often called "slippery jacks" because of their viscid cap. Their spores are formed on the underside of the cap which has vertical pores instead of gills.
Trails: Griffin under Douglas Fir
Ectomycorrhizal with conifers
Suillus caerulescens is a species of bolete fungus in the family Suillaceae. It was first described scientifically by American mycologists Alexander H. Smith and Harry D. Thiers in 1964.