I think it is Anemone multifida or A. saxicola. Look at E-Flora BC Atlas Page to see if you can tell.
I was curious and came across this on a wild plant nursery website WILDFLOWER SEEDS - Anemone multifida (Cut-Leaved Anemone) Wild Flower Seeds & Plants: Wild About Flowers, Alberta, Canada
Anybody that sells NATIVE seeds wherever they are, is a very good link for members to take a look at.