

The makrut lime, in particular, was one of the earliest citrus fruits introduced to other parts of the world by humans. They were spread throughout the world via migration and trade. Most species and hybrids of citrus plants called "limes" have varying origins within tropical Southeast Asia and South Asia. †Percentages are roughly approximated using US recommendations for adults. Note that the tree species known in Britain as lime trees ( Tilia sp.), called linden in other dialects of English, are broadleaf temperate plants unrelated to the citrus fruits. Wild lime ( Zanthoxylum fagara) not a citrus.Wild lime ( Adelia ricinella) not a citrus.( Citrus limetta, etc.) several distinct citrus hybrids Spanish lime ( Melicoccus bijugatus) not a citrus.Rangpur lime (Mandarin lime, lemandarin, Citrus limonia), a mandarin orange × citron hybrid.Persian lime ( Citrus × latifolia) a key lime × lemon hybrid, is the single most widely produced lime globally, with Mexico being the largest producer.Philippine lime ( Citrus × microcarpa), a kumquat × mandarin hybrid.Key lime ( Citrus × aurantiifolia= Citrus micrantha × Citrus medica ) is also one of the three most widely produced limes globally.Makrut lime ( Citrus hystrix) a papeda relative, is one of the three most widely produced limes globally.Blood lime (red finger lime × (sweet orange × mandarin)).

Australian finger lime ( Citrus australasica).Australian desert lime ( Citrus glauca).Australian limes (former Microcitrus and Eremocitrus).The majority of cultivated species are in reality hybrids, produced from the citron ( Citrus medica), the mandarin orange ( Citrus reticulata), the pomelo ( Citrus maxima) and in particular with many lime varieties, the micrantha ( Citrus hystrix var. Species of this genus hybridise readily, and it is only recently that genetic studies have started to shed light on the structure of the genus. The difficulty in identifying exactly which species of fruit are called lime in different parts of the English-speaking world (and the same problem applies to synonyms in other European languages) is increased by the botanical complexity of the citrus genus itself, to which the majority of limes belong.
