They list it as Iris tectorum variegata but show it as a mostly white with gold stamens and a line of purple on the inside of the falls. I haven't been able to find a picture online of the 'alba' cultivar of this one but the blue/purple cutivar looks a lot like the general form of the bloom.
Have any of you ever gotten this iris? I had it many years ago and it only bloomed one spring but then the floods of '93 killed it. I would love to get more of it and it's still available thru Springhill at good prices. But is this what it really is? It doesn't look quite like a regular bearded iris. The sites I've found the purple one on say the blooms look much like orchids and the pictures certainly look that way in the catalog.