What country do Acera and Umbria have in common?
Acera Acera is a "frazione" of the "comune" of Campello sul Clitunno in the Province of Perugia, Umbria, central Italy. It stands at an elevation of 972 metres above sea level. At the time of the Istat census of 2001 it had 19 inhabitants.
Acer opalus Acer opalus (Italian maple) is a species of maple native to the hills and mountains of southern and western Europe, from Italy to Spain and north to southern Germany, and also in northwest Africa in Morocco and Algeria.