The white grape variety comes from Italy. The name probably derives from the hard-shelled berries (duro = hard). Synonyms are Cagnina, Caina, Duracino, Durella Bianca, Durella Gentile and Rabiosa. Despite certain morphological similarities, it should not be confused with the Nosiola variety. The parentage (parenthood) is unknown. According to DNA analyses carried out in 2010, Durella is a parent of the variety Bianchetta Trevigiana. According to an unverifiable hypothesis, it is said to be (like the French variety Duras) a descendant of the ancient grape variety Duracina mentioned by the Roman authors Cato (234-149 BC) and Columella (1st century AD). The variety was first mentioned in 1825 by the naturalist Guiseppe Acerbi (1773-1846). The late ripening vine produces acidic, strong white wines that are ideal for sparkling wines. It is cultivated in the provinces of Verona and Vicenza in Veneto. Here it is permitted in the DOC wines Gambellara, Lessini Durello and Monti Lessini. There are also other stocks in Lombardy and Tuscany. In 2016, 480 hectares of vineyards were designated in Italy (statistics Kym Anderson).