The leading acid citrus fruit, because of its very appealing color, odor and flavor, the lemon, Citrus limon Burm. f. (syns. C. limonium Risso, C. limonia Osbeck, C. medica var. limonium Brandis), is known in Italy as limone; in most Spanish-speaking areas as limón, limón agria, limón real, or limón francés; in German as limonen; in French as citrónnier; in Dutch as citroen. In Haiti, it is limon France; in Puerto Rico, limon amarillo. In the Netherlands Antilles, lamoentsji, or lamunchi, are locally applied to the lime, not to the lemon as strangers suppose. The lemon is not grown there.
Several lemon-like fruits are domestically or commercially regarded as lemons wherever they are grown and, accordingly, must be discussed under this heading. These include: Rough lemon (C. jambhiriLush.), Sweet lemon (C. limetta Risso), 'Meyer' (lemon X mandarin hybrid); 'Perrine' (lime X lemon hybrid); 'Ponderosa' (presumed lemon X citron hybrid), qq.v. under "Varieties".