@Calif_Sue, you are the most qualified to answer the question about how to make an addition to the database.
@OrganicJen, I think yours is actually already in there:
Daylily (Hemerocallis 'Lady Lucille by Blooms of Bressingham')
Also, I guess "wrong" plant isn't really a good way to describe a popular plant that isn't the AHS registered one. Jen's plant looks terrific, and that can't be "wrong."