Nomenclature of the Cardinal Climber (Convolvulaceae) reconsidered

Recent literature has adopted the combination Ipomoea multifida (Rafin.) Shinn. for the Cardinal Climber, a tetraploid ornamental morning glory. This name actually applies to the sterile diploid hybrids between I. coccinea L. and I. quamoclit L. that were the progenitors of the cultivated species. They cannot be considered conspecific with the latter and the combination I. sloteri (House) van Ooststr. should once again be adopted for the cultivated plant. The synonymy and typification of the two taxa are presented.