In The Garden: Need help IDing this ground cover plant please

I've had this ground cover in my flowerbed (Calgary area) for years! It comes up early in spring, the flowers opened this week and when they're done I enjoy the dark green foliage all summer. I don't know what it is, thanks in advance for help identifying!
Pat

 

Anemone?

 

Thanks so much! I searched further under 'Anemone' and I believe it's Anemone canadensis.