Found this ones in Mar del Plata, Buenos Aires, Argentina, in horse or cow manure in a farm a few hundred mts from the coast, it was the 15th of august after a week of rains and one day of sun. There were no trees in the area for a few hundred meters, the first ones were pine trees.
I did a lot of research and is different to all the Panaeolus Cinctulus because of the brown reddish stem. It has a perfectly shaped brown greyish cap.
I eat a little one to do a test and it made my hands a bit numb and made me salivate but maybe it was because I was anxious. I know I shouldn