Iris, Fior di Giuggiolo, Fleur-de-lys: Why?

In this period it is easy to walk through the streets of Florence and notice the presence of the lily, considered the symbol of the city, on many statues, buildings and coats of arms; many hypotheses on why it became so important. Some people suppose that around Florence grew a kind of Iris, others think that the foundation of the city was in spring and in honor of the goddess Flora was combined with the city of Fiorenza flower. At first the lily was white on a red background but the Guelphs turned the colors of the Lily when victorious...