"ANGŪR – Encyclopaedia Iranica". iranicaonline.org. Alirita en 2021-04-06. "According to A. de Candolle (L'Origine des plantes cultivées, Paris, 5th ed., 1912, p. 152) the grape-vine is at home in the region south of the Caucasus, from the Black Sea to the Caspian region of Iran, where "it has the shape of a strong liana climbing over high trees and producing abundant fruit without any pruning or cultivation." His statement is still generally accepted, since the greatest diversity in varieties can be observed there."
