This milkwort is a close relative of Fringed Polygala, and if you look close, you can see that the individual florets along the stalk resemble very tiny Fringed Polygalas.
I also can't believe I managed to take its picture, since as you can see by the shining leaves, the rain was now coming fast, and dark clouds were closing off the light from the woods. I did see another Rattlesnake Plantain with a flowering stalk, but I didn't want to risk wetting my camera by trying to get a picture. And lightning was flashing close by. Time to go home and plan to come back another day.