I certainly couldn't say you are doing anything wrong, quite the reverse in fact because the one time I had a few seeds of Iris pamphylica, many years ago, none germinated at all, ever! They were sown in conditions much like those I'd found successful with most bulbs and rhizomatous irises, viz, sow them in usual seed mixture, (gritty, well drained and humusy) and forget about them until green shoots appear. Maybe I. pamphylica WOULD need and certainly deserve something a bit better though whatever the conditions I'd be very surprised to see germination after just a couple of months.
The nearest recent success I have had has been with fresh seeds of Iris histrioides 'Major,' given to me by a friend, this last autumn, so they were sown (in the open garden) in March, about 5 months ago and started to germinate about 6 weeks ago when some small bulbs of the same species were emerging. Some of the same batch of seeds, sown in a pot in what should have been the right mix, are still not up. I'm also lately of the thought that many small bulb seeds are happiest sown in the open rather than in a pot, provided the surrounding soil is congenial.
