Lactarius kaufmanii

Pileus
Cap 50-100 (125) mm broad, convex, nearly plane in age, sometimes with a depressed disc; margin incurved, becoming decurved to level, to slightly raised; surface viscid when moist, dingy brown, streaked with darker fibrils, margin lighter, the latter occasionally faintly zonate; context whitish, unchanging, soft at maturity, up to 15 mm thick near disc, gradually thinning towards margin; odor fungal to acrid; taste latently acrid.

Lamellae
Gills adnate, infrequently with.. more