Mushroom

Thank you TheMiesMeister for your help! For the time being, I'll put only the genus on the field until I find the species. Actually, I'm not very familiarized with mushrooms, so I appreciate your explanation.

Hi, this is a very tiny Volvariella species. You can tell by the sack around the base of the stipe (remnants of a universal veil). If you had taken a look on the underside, you'd see the gills stand free from the stipe. Young specimen have white to greyish gills, which soon turn pink from the ripe spores. This means that if you'd make a sporeprint, it would be pink. Though I'm not familiar with South American Volvariella, you could check out Volvariella murinella and simillar species. Cheers!