Lettuce virus X (LeVX) is a plant virus that has been found infecting lettuce in the Tehran province of Iran. Infection is not known to cause symptoms.
^Dizadji, A.; Koohi-Habibi, M.; Izadpanah, K.; Dietrich, C.; Mossahebi, G. H.; Winter, S. (2008). "Characterisation of lettuce virus X, a new potexvirus infecting lettuce in Iran". Archives of Virology. 153 (10): 1867–1875. doi:10.1007/s00705-008-0191-x. PMID18807116. S2CID22743677.