The Rhône wine region in Southern France is situated in the Rhône river valley and is generally divided into two sub-regions with distinct vinicultural traditions, the Northern Rhône (referred to in French as Rhône septentrional) and the Southern Rhône (in French Rhône méridional). The northern sub-region produces red wines from the Syrah grape, sometimes blended with white wine grapes, and white wines from Marsanne, Roussanne and Viognier grapes. The southern sub-region depends on the specific AOC rules, grapes blended into southern Rhône reds may include Grenache, Syrah, Mourvèdre, Carignan and Cinsault. White wines from the southern Rhône sub-region are blends of several wine grapes. These may include Viognier, Ugni Blanc, Roussanne, Bourboulenc, Picpoul, and Clairette.