Asarum canadense, a North American indigenous herb.
From another angle, a few days later. I'm finding seedling gingers in a twenty or so foot radius of this clump. I've read that ants and ground beetles crawl into the ground-hugging flower and pollinate it, but I've never taken the time to look for seeds.
The ants must be the seed dispersal agents as well, and we certainly do have 'enough' ants. I've been putting Twenty Mule Team Borax on my brick patio but the little Dickens keep building more anthills.
Oh well, c'est la vie. I'll just call them my little ginger farmers.
