The Quagliano is a minor variety, known as being cultivated only in the Piedmont region, north-west of Italy (Fig. 3), exclusively in the Stura, Grand, Maira and Vardita valleys and, until now, its presence was never been reported in other areas of Italy. Its cultivation in those valleys is first documented in an act published in 1739: “Bandi campestri della città di Busca compreso il tenimento detto di Castelreale spettante alla medesima comunità e specialmente li boschi selvatici” (Tenders of Busca rural town including the containment said Castelreale entitled to the same community and especially the wild woods). Slightly earlier, in 1715, is the first documented citation of the Bouteillan noir, synonym of Quagliano on the other side of the Alps, in the Vaucluse, southern France (Robinson et al. 2013).Fig. 3Geographical distribution. This map represent the Italian peninsula; it shows the geographical distribution of areas of certified and protected production of wines (DOC) from the cultivars under study. These varieties are certainly much more spread but there is no other reliable source for tracing their cultivation in other areas. Scale bar 100 km