Suillus americanus

Suillus americanus is a species of mushroom-forming fungus in the family Suillaceae. Commonly known as the chicken fat mushroom and the American suillus, it produces bright yellow, often slimy caps marked with red to reddish-brown scales, a pore surface of large yellow angular pores that can stain brownish when bruised, and a slender yellow stipe dotted with darker glandular spots. The species was first described in the late 19th century by the American mycologist Charles Horton Peck and later transferred to Suillus. It closely resembles S. sibiricus, and DNA-based studies have led some authors to treat the two names as referring to a single, wide-ranging species complex, with several regional variants recognized at infraspecific rank. Suillus americanus is an ectomycorrhizal fungus that forms symbiotic associations with pines, best known in North America from eastern white pine (Pinus strobus). Fruiting bodies appear on the ground, singly or in clusters, most often from late summer in......read more on Wikipedia.