After 2 years, I think I know what this is - a hellebore! (pics)
I've been trying to figure out what this plant in my yard is for the last couple years. After asking in the cottage garden forum today, someone suggested that maybe it was a hellebore, and once I looked at some photos, I was inclined to believe that was spot on.
I'm not sure which species it is though, so if anyone has any guesses, I'd love to know more. I managed to get 9 seeds from the flowers this past week, and have them planted in a starter flat right now, with great hopes of them germinating. They were a dark, graphite-y, greyish black in the dried seed pods, so I'm hoping they were mature enough to be plucked and planted.
Here are the photos, and I'm open to any and all guesses at what this beautiful thing is: