From Long’s Iris Garden Catalog 1953:
“Very large fine showy rose trimmed plicata. Blooms are large and full and arrive late to help extend the season”.

Provenance: Please note that the image #2 is not correct. It is a widely distributed impostor of Rose Top (as evidenced by the vetting symbol of X. Do not purchase this iris if you want the real Rose Top. It is widely believe to be the iris Maytime which is lovely in itself, but if you grow this iris under the name Rose Top, please remove that name from your plant”.