Other grape varieties which perhaps hold the most promise for Argentina's future are Bonarda and Torrontés.
Croatina or Bonarda dell'Oltrepò Pavese, grown in Lombardy, around Pavia
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Douce noir or Bonarda or Charbono, in California and widely grown in Argentina
Traditionally, the varietals grown in this area are Sémillon and Malbec; together with Bonarda and Barbera in a smaller amount.
Around the communes of Novara, Pavia and Vercelli, Uva Rara is known as Bonarda which has led it to be confused with many of the other grape varieties known as Bonarda, particularly Bonarda Piemontese.
Prior to the phylloxera epidemic of the 19th century, Bonarda was speculated to have accounted for 30% of the plantings in Piedmont but today is only found in scattered plantings along the left bank of the Tanaro river near Govone.
Douce noir, French wine grape that is also known as Charbono in California and Bonarda in Argentina