What's Blooming? May 11

White seems to be the theme in new blooms this week. I did not see any of these blooming five days ago, though of course I might have missed them.

Goldthread (Coptis trifolia)

Unknown violet (Viola sp.) - Sweet white violet?

Hobblebush (Viburnum lantanoides)

Unknown currant (Ribes sp.) - Skunk currant?

And today's curiosity: I've never seen one of these with two flowers before. I wonder if it's unusual or if I've just never noticed it:
Sessile Bellwort (Uvularia sessilifolia)