aka harvestlice, aka swamp agrimony (Agrimonia parviflora); Rosaceae (rose family)
I know, I know, you were expecting a picture of a flower. This species of agrimony has small yellow flowers, about 1/4″ wide at most, that are very typical of the rose family. It’s another example of medium-sized plants with long, spiky inflorescences and itty bitty flowers (like vervain, jumpseed, lopseed).
I like this plant for the sound of the name, which comes from the Greek for “poppy”. But really, it’s about the leaf. Is that not a fascinating leaf? Shown above is a single, pinnately compound leaf, with 17 primary leaflets and about 30 secondary leaflets. Nevermind about the flowers, I just love the plant: