Previous lectotypification of Ipomoea hederacea is shown to be ineffective. Here we discuss the situation and Iec-totypify the species with a specimen annotated by Jacquin. Ipomoea hederacea is not based on Convolvulus hederaceus L, since Jacquin was applying the name to a different taxon and therefore did not intend to publish a combination based on Convolvulus hederaceus.