The white grape variety comes from Spain. Synonyms are Cartoixà, Cartuxa, Pansa Blanca, Pansal, Premsal Blanca, Xarell-Lo, Xarel-Lo, Xarel-Lo (a special feature is the special "dot" which is only used in Spain), Xarello Blanco, Xarelo, Xarelo Blanco and Xerello. In spite of apparently indicative synonyms or morphological similarities, it should not be confused with the Cayetana Blanca, Macabeo or Prensal varieties. Allegedly the name is derived from the Italian "chiarello", which means Clairet (French name for a light red wine type). Under the name Xerello, it was already mentioned in 1785 in the probable place of origin Penedès. According to DNA analyses carried out in 2013, it is the result of a presumably natural crossbreeding Hebén x Brustiano Faux. However, this is based on only 20 DNA markers (see molecular genetics). There is also the colour mutation Xarello Rosada (Pansa Rosada) with reddish berries.