The white grape comes from Croatia, Synonyms are Imbrina, Konigstraube, Kraljevina Crvena, Moravina, Roter Portugieser. The name means "Kingdom" or "Red Kingdom". She used to be represented in Styria (Austria) under the name Roter Portugieser. She is not the sort despite the synonym Blue Portuguese related. The late-ripening vine is prone to Botrytis, There are varieties in white, green, reddish and speckled. It produces fresh white wines with low alcohol but high acidity and neutral taste. The variety is in Croatia cultivated around Zagreb and occupied a total of 268 hectares in 2010. In Slovenia it is part of the wines Belokranjec and cviček, here 179 hectares were expelled in 2010.
Source: Wine Grapes / J. Robinson, J. Harding, J. Vouillamoz / Penguin Books Ltd. 2012