Thank you. The bees gather white pollen from this plant.
I honestly don't think it's boneset ... at least not the one I know which is the Common Boneset. My reasoning is because the leaves of boneset are sessile, clasping the stem of the plant. The plant in the photo clearly has leaves with petioles. However, I do not consider myself a professional botanist or plant taxonomist and I may not know all the species of boneset.
Good eyes. Then it must be white snakeroot.
Appreciate your knowledge!