Initially this file was incorrectly entitled "Picris"! I am wondering whether it could be Pilosella officinarum or perhaps Hieracium Pilosella. After search both of the Italian botanic sites without finding anything similar, I am here with a big need of help with a capital H!
I would stay with Picris on this one. Unlike Pilosella and Hieracium, Picris has a secondary circle of bracts below the phyllaries. Anyway, if you want to distinguish Pilosella and Hieracium, the Wikipedia article might be useful: http://en.wikipedia.org/wiki/Hieracium
