A search of the SRGC forums reveals that no one has mentioned Anemone caucasica so far.
This tiny anemone is like a quarter-size version of Anemone blanda. I grow it in a partially shaded position in the duff under a large deodar, and it performs reliably there. It gets water once in a while during our usual prolonged summer drought, but not on any organized schedule.
Viable seed forms, though not plentifully. If harvested and sown as soon as it begins to ripen, germination is good the next spring. A scrap of nylon panty hose fabric around each faded flower makes collection fairly easy.
Young tubers will flower sparsely two years after germination, but probably need at least another year or two to mature in the seed pan before planting out.
The chief difficulty presented by Anemone caucasica in outdoor cultivation lies in siting it so it makes a contribution to the garden picture. Like many other small bulbs, it's easily overshadowed by stronger growing plants, so needs to be planted en masse and in a site where there is little visual competition at its flowering season.