This was given to me as a small bit of tuber about 30 years ago - I forget who from - and it has been with me ever since.
I know nothing more about its origins but it's been a wonderful strong grower wherever I've had it, forming a dense, rounded clump. Unless someone can come up with a better suggestion I'm going to call it Cherry Pannacotta.
Many single rounded creamy flowers, edged in pink. The foliage is very glaucous grey green (a bit like mlokosewitschii - a possible parent - but the leaflets are narrower), and strongly tinted purple in spring. Does not set seeds.