Citron
A source of confusion is that "citron" or similar words in French (and other languages), and English are false friends, as they refer to the lemon. Indeed, into the 16th century, the English name "citron" included the lemon and perhaps the lime as well.
Citreae
Three sub-tribes are included:
Notable species in the Citrinae group include Bergamot orange, calamondin, citron, grapefruit, lemon, lime, orange, pummelo, tangelo, and tangerine, all of which are in the genus "Citrus".