114762
In 1902 , L. Rougier , an ampelographer writing for Pierre Viala and Victor Vermorel 's catalog of grape varieties speculated that Mornen noir was indigenous to the western Rhône-Alpes region in the area between the Rhone and upper Loire rivers .
 Pierre Viala, Rhône-Alpes
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 Pierre Viala, Rhône-Alpes