I used to call it for a long time Anemonella, but I shall conform to the rules: Thalictrum it is. A most delicate woodland plant with finely divided foliage into rounded leaflets which resemble those of Thalictrum, hence the names. Inflorescences with 3-6 white, rarely pinkish, flowers in the spring with a central boss of yellow stamens.
Such great foliage plant; its airy appearance combines well with heavy textured plants such as hostas, Hellebores, Brunnera, or really any other plants.
Germination: better sown right away or kept moist (W. Cullina’s advice and I trust it) and allowed a warm-cold cycle. Done from seed, it will flower in the second or third year. Just a few and they should have a mosquitoes surcharge ;)