what is suillus salmonicolor?
A fungus commonly known as Slippery Jill
Suillus salmonicolor
Suillus salmonicolor, commonly known as the Slippery Jill, is a fungus in the family Suillaceae of the order Boletales. 
wiki:14026011
Suillus salmonicolor [SEP] Introduction
Suillus salmonicolor, commonly known as the Slippery Jill, is a fungus in the family Suillaceae of the order Boletales. First described as a member of the genus "Boletus" in 1874, the species acquired several synonyms, including "Suillus pinorigidus" and "Suillus subluteus", before it was assigned its current binomial name in 1983. It has not been determined with certainty whether "S. salmonicolor" is distinct from the species "S. cothurnatus", described by Rolf Singer in 1945. "S. salmonicolor" is a mycorrhizal fungus—meaning it forms a symbiotic association with the roots of plants such that both organisms benefit from the exchange of nutrients.