Infiorata Bolsena 2010 June 6 2010. The 'infiorata' is a homage to the miracle that took place in Bolsena, known all over the world as the 'Miracle of Bolsena. In 1263 a Bohemian priest, traveling to Rome to resolve his doubts over the doctrine of transubstantiation, celebrated mass in the town: the communion host turned to literal flesh at the consecration and drops of human blood spilled onto the altar cloth. He tried to hide what had happened but stains remained on the cloth and on the floor.