**We have a correction to this post–this wildflower is called Lateflowering Thoroughwort. It’s a member of the Eupatorium family.
Seems to be the season for noticing this white-flowered plant.
Exactly three years ago, Ms. Flora helped me narrow it down to Boneset, but we never did determine a specific species. This year, we squirrels are seeing the plant–one we never noticed when it wasn’t blooming–along roadways and in all sorts of corners.