There seem to be a number of impostors being called Iris sintenisii, but the real thing might be right under my nose.
Years ago I purchased a plant (1) under this name, but it never looked right. Later I was given a different (2) I. sintenisii that fit photos better. Then I acquired Iris brandzae (3) which all the literature agrees is a subspecies of I. sintenisii and is very distinctive. Here is where identifications really began to get confusing.
If brandzae really is a subspecies (ssp) of sintenisii, they should both look something alike. My two other plants were quite different although obviously small spurias. I then grew a fourth small spuria (4) under the name I. kerneriana. I've grown this before and it is an attractive small plant with yellow flowers. When it bloomed it had violet purple flowers so was obviously another mis-named small spuria. That's 4 plants including the obvious I. brandzae.
This leaves my second plant (2) that everyone else grows as I. sintenisii, but I now think has to be an imposter. So what is this one? Using the BIS Species Guide and Mathew's "Iris", I am leaning toward I. pontica, but having never seen or grown this species it is just a guess.
Now if only I could identify the iris commonly grown as Iris sintenisii (2). I am hoping to get pictures and descriptions together for another round of 'Name That Iris". Until then will the real Iris sintenisii please stand up and be identified?