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Designation (also Ursorte) for a vine who are within a large group in the Vines pedigree as origin ( mother or father) for many other varieties. Naturally, these are all very much old grape varieties, Most of the cultivars cultivated in Western Europe today are based on a relatively small group of leading varieties and their spontaneous (natural) intersections back. The most important is probably Gouais blanc (Heunisch or white Heunisch), of the more than 100 varieties as among others Riesling (Germany), Chardonnay (France), Blaufränkisch and Sylvaner (Austria), as well as Furmint (Hungary).
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