I just looked it up. It was one of the seedlings rescued from a garden move after a friend kindly took out tags for me. He isn't a gardener.
So no parentage.
But I had made a number of crosses with Tenison Ridge around that time.
It has similar stem and bud coloration as Ominous Stranger. And one I would suggest trying for a black stem variety.
From: thomas silvers <firstname.lastname@example.org>
Sent: Fri, May 21, 2010 3:02 pm
Subject: [iris-photos] Re: HYB: Black stems
Chuck and Gary. You guys had me laughing out loud - thanks!
By the way, do you remember the parentage of your black stem ugly seedling?
I've only noticed a slight tint in 'Tennessee Gentleman' and a NOID that I think may be 'Rocket', but Neil Mogensen mentioned getting that trait in some 'August Aster' (I think) seedlings.