Here is a plant grown from seed from this year's seed exchange as C. sosnowski. I can find scant info about it online, other than it's from the Caucasus, blue, and leaves are deeply incised. These flowers are pale lavender and the leaves are shallowly incised. They are cordate-orbicular at the base and lanceolate and elongated further up. Flowers are about 1/2" across, but as you can see this is blooming in a small pot, having been potted-on only once, so perhaps would be more robust with maturity. (I was surprised to get any blooms at all from seed this year, but I've had several C. waldsteinianas, and a C. choruhensis is preparing to put on quite a show. I should probably pinch off the buds, but I can't resist seeing what it's going to come up with!)Anyway, I'm wondering if this is indeed sosnowkyi.