The red variety comes from Italy, Synonyms are Bottascera, Botascere, Geschlafene, Geschaefene, Martinenca, Patriarca, Rossara Gentile, Ross Ciàr, Rossera, Schiava, Schwarzwälsche and Varenzasca. The name refers to the possible place of origin Trentino, as well as the reddish berries. It may, despite seemingly suggestive synonyms or morphological Similarities do not match the varieties Schiava Lombarda. Rossara or Rossola Nera be confused. Also to Schiava varieties (Vernatsch) there is no connection. According to done in 2013 DNA analysis Rossara Trentina is one of the many descendants of Gouais blanc (White Heunisch); the second parent is unknown. A genetic relationship exists to the variety Sgavetta,
The late-ripening, high yielding vine is resilient to falseness mildew, but prone to powdery mildew, Botrytis and Flavescence dorée, It produces fresh, perfumed reds with apple-like acidity. The variety is grown mainly in the Rotaliano Plain in Trentino, where they often with Negrara Trentina and Teroldego is blended. In Piedmont it is cultivated under the name Varenzasca. The acreage in 2010 was only 8 hectares, with a strong downward trend (10 years earlier it was still 29 hectares).
Source: Wine Grapes / J. Robinson, J. Harding, J. Vouillamoz / Penguin Books Ltd. 2012
Pictures: Ursula Bruehl, Doris Schneider, Julius Kühn Institute (JKI)