I can only say that the word "Iride" is the name of Augusto Bianco's nursery.
Complet name is "Bianco-Iride" (in italian "iride" is another name for the rainbow).
I don't know what does "prior to 1998" means in that contest.
Merry Christmas to everybody
Filippo from southern Italy (where the winter is still too too too hot!)
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