Suillus grevillei (Pk.) Singer var. clintonianus Cap 5-15cm across, semicircular, becoming broadly convex then flatter; color variable from rich reddish brown to yellow; smooth, glutinous, with a separable pellicle. Tubes 10-15mm deep, adnexed to depressed becoming subdecurrent; amber yellow becoming olive-yellow then reddish brown when bruised. Pores 1-2 per mm, angular. Stem 40-100 x 10-30mm, solid, slightly club-shaped; yellow to pale yellow within and without, surface soon developing chestnut patches. Veil cottony partial veil, which may have a gelatinous outer layer in wet weather, leaves a distinct ring; dingy in age, staining pinky-brown after handling. Flesh rather thick; yellow becoming flesh-pink or salmon pink when bruised. Odor none or slightly metallic. Taste mild to slightly bitter. Spores ellipsoid, smooth, 8-10 x 2.8-3.5µ. Deposit olive-brown. Habitat in groups or dense clusters, often in semicircles associated with larch. Common. Found in northern North America. Season September-October. Edible. Comment Distinguished from Suillus grevillei (above) by its much darker reddish-brown colors, although some mycologists do not recognize it as a separate variety.