5543 | IONA | 5681 | JEFFERSON | IONA = JEFFERSON Jefferson and Iona show matching fingerprints. According to Hedrick, U.p. (1908), it seems that both cultivars are morphologically matching as well. In addition Catawba was indicated as potential parent of Iona, which turned out to be true. | assignment to a different prime name | 2018-12-20 |