The red grape variety comes from Italy. Synonyms are Corlaga, Corlage, Palera, Polera, Pollara Nera and Pollora Nera. According to DNA analyses carried out in 2013, it comes from a presumably natural cross between Sciaccarello(Mammolo) x unknown partner. Therefore the varieties Biancone di Portoferraio, Caloria and Colombana Nera are related to it. A distinction is made between the two varieties Pollera Corlaga and Pollera Commune. The medium ripening vine produces neutral tasting, simple red wines, which are mostly blended with Sangiovese. It was mentioned in 1821 by the natural scientist Giuseppe Acerbi (1773-1846) as a variety widely spread in Liguria and Tuscany. Today it is cultivated in the Cinque Terre area of Liguria and in the Tuscan province of Massa Carrara. There, for example, it is registered in the DOC wine Colli di Luni. In 2016, the Italian area under cultivation was 32 hectares (Kym Anderson).