Suillus borealis Smith, Thiers, & Muller Cap 4-12cm across, convex; dark reddish brown to chocolate brown; with gelatinous purple-brown veil. Tubes 4-7mm. Pores about 2 per mm; pale, dull yellow. Stem 10-50 x 10-30mm, white becoming yellowish, dotted with sticky glands. Veil dull lavender or purplish; gelatinous. Flesh white. Odor slight. Taste slight, pleasant. Spores fusoid, 7-8 x 2.8-3µ. Deposit dull cinnamon. Habitat gregarious or growing in dense tufts under western white pine. Common. Found in the northern Rocky Mountains. Season October-November. Edible-excellent.