Genus: Paeonia
Species: x
Cultivar: 'Double Pink Dandy'
Common Names: Itoh Peony, Intersectional Peony
Trade Name: Keiko™
Doesn't appear to have any patent info. The "Adored" in parens after Keiko™ is simply the English translation of the Japanese. You may want to comment that.
Interesting cross...seems to have special requirements
http://www.ocregister.com/arti...