Complex sentence: The name "wild onion" is applied to a number of "Allium" species, but "A. cepa" is exclusively known from cultivation and its ancestral wild original form is not known, although escapes from cultivation have become established in some regions.
Split into simpler sentences: The name "wild onion" is applied to a number of "Allium" species, but "A. cepa" is exclusively known from cultivation. Its ancestral wild original form is not known, although escapes from cultivation have become established in some regions.