Phryma leptostachya; Verbenaceae (verbena family)
This is one of my favorites. It’s the flower that got me thinking about using tiny details to create abstract art. The three purple teeth on the back of the calyx can’t be seen by the unaided eye:
Lopseed is a woodland forb native to the eastern US. The plant stands about two and a half feet tall; the inflorescence can be a foot long, but each individual flower is about 1/8″ long. They seem so out of proportion to the plant overall.
I was just thrilled to find a stand about a ten minute walk from my house.