Marsh Marigolds In Grasses
I believe this is Marsh Marigold - Caltha biflora. This plant seems to love the water - I only found it in very boggy bits where snow pack or a small stream kept the ground saturated.
Species: Caltha leptosepala (White Marsh Marigold)
John Harvey Photo > A Weekend in Comox > Marsh Marigolds In Grasses