https://www.rhs.org.uk/plants/115313/anemonella-thalictroides-double-green-(d)/details
Anemonella thalictroides 'Double Green' (d) | /RHS
anemonella thalictroidesdoublegreenrhs
https://www.gardenersworld.com/plants/anemonella-thalictroides-double-white/
Anemonella thalictroides 'Double White' | BBC Gardeners World Magazine
Plant profile of Anemonella thalictroides 'Double White' on gardenersworld.com
bbc gardeners worldanemonella thalictroidesdoublewhitemagazine