The plants that I have considered are: Pilosella officinalis; Hieracium pilosella; Hypochoeris achyrophus and Hypochoeris aethnensis. Finally I decided that none of these are correct. I am unable to say whether this compositae is to be found only in Italy! I hope that a member might be able to identify it.
It's one of these . . . ;-) There's hundreds of apomictic microspecies in those genera, so the chances of getting it identified by anyone other than an acknowledged expert in those genera are minimal.
Did you rule out Crepis? You can also try your luck in the local forum: http://www.actaplantarum.org/floraitaliae/