It should be pointed first that in eastern Liguria the name Caloria is rarely used for identifying this cultivar. Corlaga and Pollera are instead the most common names, but  the second one is confusing as the Pollera nera N. ruled in the National Variety Catalogue is a different grape.

Historical references to the name Caloria also are quite rare. The one made by Giorgio Gallesio in 1813 in Val di Magra (La Spezia) for a cultivar he called "Caloria or Foscara" (Gallesio, 1995) seems the oldest, although, according to a modern description (Scalabrelli et al., 2005), Foscara would be a distinct grape to not be confused with Caloria.

Breviglieri and Casini (1965), authors of the Caloria’s description compiled for the Ministry of Agriculture, state the variety was widely grown in the province of Massa, but they do not report any historical document concerning its occurrence in the past.

Currently grown particularly in Lunigiana (province of La Spezia), Caloria is also present in the neighboring  province of Massa-Carrara.  Sometimes the accessions with looser clusters are indicated by the mentioned synonym of Corlaga.

Because frequently misnamed for Pollera, it’s hard to find out which wines labeled Pollera are obtained from Caloria and which ones from the true Pollera nera. Besides being blended with other grapes, Caloria and/or Pollera give also varietal wines, sometimes “passito”. Given the low content on anthocyanins, they are also used for producing white wines by early skins removal.