The white grape comes from Istria Croatia or from Veneto Italy, The sometimes confusing synonyms are Glera, Prosecco Lungo, Ribolla Spizade and Tocai Nostrano. Despite apparently indicative synonyms or morphological It must not be similar to the varieties Glera (formerly Prosecco), Glera Bela (Pienel) Malvasia Bianca Lunga (Prosecco Nostrano) or Ribolla Gialla (Italy) can be confused. Until 2009, the officially valid main name was Prosecco Lungo; the change to Glera Lunga has resulted in some confusion; see the relevant history in detail at Glera,
According to DNA analysis The three varieties Prosecco Tondo (Prosecco, now Glera), Prosecco Nostrano (Malvasia Bianca Lunga) and Prosecco Lungo (now Glera Lunga), previously considered to be varieties of a single variety, are three independent varieties. There are genetic similarities between Glera and Glera Lunga, one Parent-offspring relationship can however be excluded.
The variety is in Veneto and Friuli-Venezia Giulia grown under different names (also mixed with Glera). The varieties grown under Glera are mostly Prosecco Lungo (Glera Lunga) and not Prosecco (Glera). The variety, which almost died out in the late 1980s, was developed by the research institute Conegliano reactivated. In 2010 (under Prosecco Lungo) 1,367 hectares of vineyards were recorded.
Source: Wine Grapes / J. Robinson, J. Harding, J. Vouillamoz / Penguin Books Ltd. 2012
Image: Dragoslav Ivanisevic, Faculté des Sciences Agronomiques, Institut de Viticulture,
d'Arboriculture, Fruitière et d'Horticulture, 21000 Novi Sad, SERBIA