Citron
There are also a number of citron hybrids; for example, ponderosa lemon, the lumia and rhobs el Arsa are known citron hybrids, some are claiming that even the Florentine citron is not pure citron, but a citron hybrid.
Myrmelachista schumanni
Lemon ants get their name from the lemony taste of acids produced as part of a glandular chemical defense system. When crushed or attacked, citronellal pheromones are created to communicate alarm to nearby individuals, which also produces a citrus odor.