Claytonia... sweet scented diminutive...we called them "Mayflowers"

Cool..., this is one I've not seen around here. I will have to take a closer look !

Yes please take another pic when the petals are open. They look really nice.

Thanks Flcrazy...I'm sure they must be common to most of NA...they grow near the edge of clearings...I've just posted a pic of the flower in full bloom, Toto... they are much pinker than they look here.