As far as Trimmers and others flowers, if they don't meet the specifications of ufs they will be registered as a large flower. I did a post on ufs not long ago if someone knows how to post a link to it and the AHS site has a really good section on ufs.
This is the pollen parent to Lillian's Vapor Trail and Lillian's White Lies. (Lillian's Thin Ice x Lavender Butterfly)
It's registered as a large flower, it's also very pod fertile and not well known.
LAVENDER BUTTERFLY Keown 2003