Lactarius vellereus.

Lactarius vellereus. Are fairly rare, but sometimes abundant in coniferous and deciduous forests. Growing normally groups, like mushrooms. The cap is initially convex, sunken in the middle, with a wrapped edge, then funnel-shaped, dry, pubescent, later almost naked, pure-white, slightly later than the ocher. The plates are infrequent, whitish or yellowish. The stem at the base somewhat narrowed, solid, with very copious white milky juice.
The fungus can be used for pickling, but first it must be sure to boil. Mushroomer usually do not collect lactarius vellereus due to extremely acrid taste and coarse texture.