Genus Suillus refers to a group of mushrooms characterized by their slimy or sticky caps and the presence of pores instead of gills. Some common synonyms for Genus Suillus include sponge mushrooms, slippery jacks, or boletes. These mushrooms are typically found in coniferous forests and are known to form mutually beneficial relationships with mycorrhizal trees. Suillus luteus, commonly known as slippery jack, is a popular edible mushroom in Europe, while Suillus americanus or boletus pseudosulphureus is a popular choice in North America. Suillus mushrooms contain polysaccharides that have been studied for their potential immune-boosting and anti-cancer properties. Overall, Genus Suillus represents an important group of mushrooms in ecology and gastronomy alike.