Close relative to A. blanda - Anemone caucasica - white form from Georgia, blue from Armenia.
A very pretty little plant that I've grown for abt 20 years. But the operative word is "little" — it's a plant so small that it's hard to site effectively in the garden, rather like the problems posed by
Acis autumnalis and
Trillium rivale. Probably the best strategy is to work up a considerable stock and make a mass planting.
Mine are all blue, imported from Czechoslovakia abt 1990 by Vera Peck in Vancouver. Seedlings are slow to reach flowering size, but may be like eranthis: the seedlings hate pot culture, but once they are planted out, they come into flower within very few years.