The white grape variety originates from Spain. Synonyms are Casta de Montúo, Firmissima, Getibi, Granadina, Jetibi, Morata, Mantuo Basto, Moravita, Moravita Portugais, Perruna, Perruno Común, Perruno de Arcos, Perruno de la Sierra, Perruno de Sierra, Perruno Duro, Perruno Duro de Roxas Clemente, Perruno Fino, Perruno Tierno, Royal, Royal Madrid, San Jeronimo, Tribu Perrunos, Vidueño and Vidueño Blanco. It should not be confused with the Zalema variety (synonym Perruna) due to synonyms that seem to indicate it. The variety was first mentioned in 1792 by the agronomist Cristóbal Conde Medina (1726-1798) as occurring in Extremadura. In 1807, the botanist Simon de Rojas Clemente y Rubio (1777-1827) described the three varieties Perruno Duo with white berries, Perruno Común or Perruno Pierrot with reddish berries and Perruno Negro with black berries. According to DNA analyses carried out in 2003, a parent-offspring relationship with the Moscatel Negro variety (Listán Prieto) was found, although Perruno is the more likely descendant. The early budding vine is generally well resistant to pests and vine diseases. It produces rather low-acid white wines of simple quality, intended for quick consumption. The variety is grown almost exclusively in Extremadura, where it is permitted in the Ribera del Guadiana area. There is also a small population in Andalusia. In 2016, a total of 745 hectares of vines were reported in Spain, with an extremely downward trend; in 2000, the figure was 2,831 hectares (Kym Anderson).