The white grape variety comes from Italy; it is one of the many Trebbiano varieties. Synonyms are Greco di Velletri, Rossetto, Trebbiano dei Castelli, Trebbiano di Spagna and Trebbiano Giallo di Velletri. It must not be confused with the Greco, Rossetto or Trebbiano Modenese varieties, even if the synonyms or morphological or name-similarities seem to indicate this. The medium to late ripening vine is resistant to both types of mildew. It is cultivated mainly in the Lazio region, where it is used in the DOC/DOCG white wines Bianco Capena, Castelli Romani, Cerveteri, Colli Albani, Colli Etruschi Viterbesi, Colli Lanuvini, Colli della Sabina, Controguerra, Cori, Est! Est!! Est!!! di Montefiascone, Frascati, Roma and Tarquinia. There are other stocks in Lombardy, where it is included in the DOC wine Garda Colli Mantovani, and Emilia-Romagna, where it is used for balsamic vinegar under the name Trebbiano di Spagna. The variety, which is grown exclusively in Italy, occupied a total of 10,664 hectares in 2010, with a strong upward trend (ten years earlier it was 3,984 hectares). It occupies 65th place in the worldwide grape variety ranking.
Source: Wine Grapes / J. Robinson, J. Harding, J. Vouillamoz / Penguin Books Ltd. 2012
Pictures: M.I.P.A.A.F - National Vine Certification Service