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.
Corsican citron
For a short period of time Genoese merchants, who always supplied fruit for the Jewish ritual of Etrog, used to ship also some amount of this Corsican variety, while there was not enough available from Diamante. This tradition terminated due to competition with the Greek citron which was considered to be of extraordinary beauty.