Suillus Collinitus, this fungi is characterized by a cuticle that is usually slimy and wet even in dry weather, easily separable, yellow flesh, not very consistent. It has a cylindrical shank which often is decorated with dark granules. It has yellow pores and tubules.
It is edible and they grow in the pine forests from late spring to late autumn.
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Notes
Raffaele Mansi, Associazione Micologica Campana Il Bosco