Finally one with a real existing name. The genotype is named after the Mexican village Matias Romero, the place where it was collected first by the famous American doctor and mycologist Stephen Pollock. These mushrooms look very much like the PF variety, but they are smaller and tend to come up in clusters of many mushrooms. Since the most potent mushrooms are usually the smallest, this is a typical mushroom for the connaisseur. The spore production of this mushroom type is somewhat stronger than the PF, but not as abundant as the Golden Teacher.