In a message dated 4/20/2010 3:04:48 PM Mountain Daylight Time, firstname.lastname@example.org writes:
El: the picture looks like something out of variegata reginae, i would bet That is what you have, iris songarica has never been grown in North America to my knowledge. I believe a friend from the Missouri Botanical garden has tried to get seed recently from a botanic garden in Tajikistan but i have yet to here if they had success. Through the years many many imposters have been out there. And seed often is obtained from these mislabedled plants, even from botanical gardens.
Bob -- Thanks for the clarification. The experiment I mentioned was back in the late 1970s or very early 1980s, but I'm quite sure I didn't distribute any seeds from it so if my "songarica" was mislabeled the error was not propagated.