It reminds me of a climbing rose called "Fourth of July"' that has 2" striped blooms - I'll put a link to the HelpMeFind listing and you can click on the "photos" tab to see more pictures:

Here is a link that might be useful: Fourth of July

Thanks, will watch and see what it does. So far it hasn't had semi-double blooms, but there's a bloom right behind the one in the picture. Will see what that one does.