The plant is listed in the 2017 R&I as Engaging Views. If that is incorrect, Tom Burseen has a much more serious issue to deal with, but he would have to take it up with registrar for AIS (John Jones I believe). For what it's worth, it's not uncommon for growers to misspell the names of irises on their websites, catalogs, and/or plant tags, even their own creations. I saw
Tall Bearded Iris (Iris 'Eleganza') , for example, spelled at least three different ways the year it was introduced. It's one of the reasons I'm reluctant to add irises to the database prior to the registry being published.