I just stumbled upon a possible id for one I've had for several years. I received it in an historic iris swap, and I don't recall if I was given a name at the time or not. I've just called it my "big old blue". It is simple by today's standards, but is a vigorous garden plant that never fails to put on a great show, regardless of care. The tall stems are strong and rarely fall over. I think it could possibly be 'Blue Rythm'
