Tom, that's actually Lysimachia 'firecracker', and I love that color echo. This year the Lysimachia was a bit too happy and tried to eat everything else in the bed, so I've dug most of it out. I would like to find some other well behaved red leaved plant to put back in; colorful foliages make the best companions for autumnal shades of Irises.
I love this Iris with the red leaves too, and with the Heuchera. Oops, not to take us off topic, but since I've long forgotten the name of that Iris, it could well be one of Paul Black's, LOL.