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Lactarius trivialis   (Slimy Lead Lactarius)
North America, Europe
Cap 6-15 cm diameter, stem 6-12 cm tall * 1-2 cm thick

Lactarius trivialis, also known as the Slimy Lead Lactarius, is an agaric that has a large fleshy cap that is often spotted or fainty concentrically zoned and pale gills and stem. It exudes white milk and grows solitary or in scattered groups on boggy soil under coniferous trees and birches.

Cap smooth, greasy, later depressed in the center and at first purplish violet with darker zones, becoming brownish gray or pinkish beige. Gills pale cream, crowded and slightly decurrent. Spores are pale yellow. Stem may be quite long, pallid with tint of cap colour and later often hollow. The mushroom has no ring.

Similar species Lactarius argillaceflius grows in eastern North America under oaks with gills that stain and age brownish.

Lactarius trivialis on Wikipedia.

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