Shade Gardening: Can you identify this plant for me?, 1 by DonnaMack

DonnaMack wrote:
Dear fellow gardeners,

I have just moved from a mostly sunny to a mostly shady garden, and some of the plants are unfamiliar. I now have hostas popping out of the ground, and I have removed at least 400 lily of the valley, but I have a plant I don't recognize, and I got no response on the invasives forum. My neighbor is allowing lots of them to grow but some people like invasives. Can you please identify this for me? It seems to like to grow under trees.

I'm trying to figure out whether I should eliminate it now. The lily of the valley is so ingrown that the root system is actually at the surface in some places.

Thanks