Confusing part of names or synonyms of (most likely) independent grape varieties; most of them in northern Italy. With a few exceptions they are red wine varieties. Individual kinship relations cannot be excluded, but are not known:
In Lombardy there is the DOC area Bonarda dell'Oltrepò Pavese with red wine from Croatina (Bonarda).
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Dominik Trick
Technischer Lehrer, staatl. geprüfter Sommelier, Hotelfachschule Heidelberg