Lactarius uvidus

''Lactarius uvidus'' is a European and North American "milk-cap" mushroom, of which the milk turns violet when the flesh is damaged. The fungi generally identified as ''L. uvidus'' are part of a complex of closely related species and varieties which are difficult to delimit definitively.

It gives its name to the section ''Uvidi'' within the genus ''Lactarius''. It is generally thought to be poisonous .