Not a native, but Hairy Bittercress, Cardamine hirsuta is actually really cute, in flower right now. I'm trying to eradicate it and this may be the year I use corn gluten meal on it ...

Will have to go check my bloodroot - it's in a woodsy corner of my garden and the minor bulbs are stealing the show, as usual at this time of year. That may explain why I rarely notice the flowers - and they certainly are sweet.

One of my favorite understated shrubs that's blooming now is wintersweet - Chimonanthus (praecox, I think, but maybe another variety). It's such a lovely creamy yellow; I'll have to go take a photo because it's hard to describe. It's next to a screaming pink Rhododendron mucronulatum, but I don't have the heart to move either of them because I love the early color so much.

Here is a link that might be useful: hairy bittercress