Flora Novae-Angliae notes that Kim, Molecular Phylogeny of Forsythia Based on Chloroplast DNA Variation, Plant Syst. Evol. 218, 1999, does not support Forsythia x intermedia as a hybrid of F. suspensa and F. viridissima. However this widely cultivated strain has not been identified as naturally occurring. Since both F. intermedia and F. x intermedia are currently on iNaturalist, this taxon swap consolidates the species to F. x intermedia, both the currently accepted name at ITIS, and Zadel's original name from his description of the species (Gartenflora, 1885). The other common name for the species, showy forsythia, has been added to F. x intermedia.