Lactarius deliciosus

Common Name: None.
Description: Cap 5-14 cm across, broadly convex with a depressed disc and a distinctlyy inrolled margin, becoming funnel-shaped with a wavy margin in age; pale flesh or rosy buff tinged greenish in places, with numerous purple-brick or salmon-colored blotches arranged in narrow concentric bands; sticky when moist. Stem 30-70 by 10-25 mm high and wide.
Habitat: scattered to gregarious under conifers, especially pine. Often common. Fund widely distributed throughout North America.
Edible: Good, mild or slightly bitter taste.

Source: Mushrooms of North America by Roger Phillips.