The white grape variety originates from Portugal. Nothing is known about the ancestry (parentage) as well as a possible genetic relationship to the Alvar Roxo variety with reddish berry colour. It is grown in small quantities in the Alentejo area and in the Centro region. In 2016, 0.2 hectares of vines were identified (Kym Anderson).
Serious sources on the internet are rare - and Wine lexicon from wein.plus is one such source. When researching for my articles, I regularly consult the wein.plus encyclopaedia. There I get reliable and detailed information.
Thomas Götz
Weinberater, Weinblogger und Journalist; Schwendi