However , there is some confusion about whether Petit Rouge is the same variety as the red Swiss wine grape Rouge de Valais .
Petit Rouge is a red Italian wine grape variety that ampelographers believe is indigenous to the Valle d'Aosta region of northwest Italy .
There is some confusion about whether wine grape variety   is the same variety as the red Swiss wine grape Rouge de Valais .
Petit Rouge is a red Italian wine grape variety that ampelographers believe is indigenous to the Valle d'Aosta region of northwest Italy .