This red grape variety comes from the border region Italy (Gorizia)-Slovenia (Goricia). It is a member of the Refosco group. Synonyms are Cagnina, Crodarina, Gallizza, Grosse Syrah, Istarski Teran, Istranin, Lambrusco dal Peduncolo Rosso, Lambrusco Peduncolo Rosso (possibly independent, though one is not listed in the VIVC catalogue), Rabiosa Nera, Refosco del Carso, Refosco d'lstria, Refosco Magnacan, Refoscone Nero, Refosco Terrano, Refošk, Refošk Istarski, Taran, Taranac, Tarin, Teran, Teran Black, Teran Cagnina, Teran Crni, Teran Crvene Peteljcice, Teran Noir, Teranovka, Terant, Terran, Terrana, Terrano del Carso and Terrano d'lstria. It should not be confused with the varieties Refosco di Faedis or Refosco dal Peduncolo Rosso, despite seemingly suggestive synonyms or morphological similarities. According to DNA analyses carried out in 2020, it originates from a presumably natural cross between unknown parent variety x Refosco di Faedis. However, this is based on only 12 DNA markers (see molecular genetics).