late 20th century, several California vineyards that thought they were planted with Durif/Petite Sirah were found to be field blends that contain some plantings of Peloursin. Relationships and confusion with other grapes In addition to being a parent of Durif, Peloursin was also crossed with Persan to create Joubertin. DNA testing also suggest a relationship between Peloursin and Bia blanc which share some morphological similarities but the exact nature of that relationship is not yet known. Plantings of Peloursin are often confused with its offspring Durif and this was particularly the case in California where many plantings of Petite Sirah/Durif were discovered to actually be Peloursin. In the Jura region, it is sometimes confused both Poulsard and Béclan due to similarities in synonyms among the three grapes. In the Isère, Peloursin is sometimes confused with Dureza, one of the parent grapes of Syrah. Synonyms Over the years Peloursin has been known under a variety of synonyms including: Belossard, Blauer Thuner, Chatille, Corsin (in Savoie), Durazaine, Duret, Durif fourchu, Famette, Feunette (in Haute-Savoie), Fumette (in Haute-Savoie), Gondran, Gro Nuar, Gronnat, Gronnay, Gros beclan (in Jura), Gros nat, Gros noir, Gros noirin, Gros plant, Mal noir, Mauvais noir, Mosaguin, Parlouseau, Parlousseau, Pelaursin, Pellorcin, Pellossard, Pelossard noir, Pellourcin, Pelorsin (in Isère), Pelossard, Pelossier, Peloursin noir, Plant d’Abas, Plant de Paris, Pourret (in Franche-Comté), Pourrot (in Franche-Comté), Saler, Salet, Salis, Sella, Soler, Spartin, Thuner, Thuner Rebe, Treillin, Verne and Vert noir. References Red wine grape varieties