Lumia (citrus)
A recent genomic analysis of several species commonly called 'lemons' or 'limes' revealed that the various individual lumias have different genetic backgrounds. The 'Hybride Fourny' was found to be an F1 hybrid of a citron- pomelo cross, while the 'Jaffa lemon' was a more complex cross between the two species, perhaps an F2 hybrid. The Pomme d'Adam arose from a citron-micrantha cross, while two other lumias, the ‘Borneo’ and ‘Barum’ lemons, were found to be citron-pomelo-micrantha mixes.
Siracusa Lemon
The lemon plant originates in Burma, where it is found growing wild: from there it crossed the Middle East, Mesopotamia, and Palestine, to the Mediterranean, where it found favorable conditions to thrive. The natural habitat of the lemon lies in a strip from the 40° parallel in the North to the 40° parallel in the South: this strip includes California, Uruguay, Argentina, South Africa and the Mediterranean basin, in particular Italy, Spain, Greece and Turkey. In the Fifteenth and Sixteenth centuries, when there was an aristocratic monopoly on citrus growing, the use of lemons was confined to luxury foods.