Cheley & Moni Dew, I have something similar that's a wild violet. Where do your plants grow - sun, shade, under trees etc.? What's the true color of the blossom & when does it bloom - a particular season or all summer? My plants have a more pointy leaf and yours are more crenate. Simple test - dig up a root and look at it and taste it - I didn't say eat it, just smell and taste it. Maybe just crush some leaves and smell that. If it's ginger you'll know it.
I suspect it's one of the many wild, "native" flowers. Check and see if you have a local ag extension office and send them a leaf and see if they can identify it. Next test, look online for wild ginger. Next, find someone who is into native plants on their property. They might give you some info. That's all I've got. I can't give a definitive answer without more info and I certainly don't wish to give bad info.