Many Pacific Coast iris hybrids are available that haven't been given a name. This is a subset of the nameless irises I've grown; these all have blue or purple flowers.
The flower stems tend to be floppy, but this has proved to be one of the longer-lived plants I've grown.
Images: flower (57 KB), flower (72 KB), flower (64 KB), flower (62 KB), with 'Triple Heart' (65 KB)