Greater Coreopsis,  Coreopsis major
Asteraceae or Sunflower Family

Upright plant, about 2 or 3 feet tall.  Leaves actually in pairs, but stalkless and so deeply cut into 3 narrow, pointed leaflets that there appear to be whorls of 6 leaves.  Flower heads about 2 inches wide, with a button of many tiny brownish yellow disc flowers surrounded by around seven yellow ray flowers.  Blooms in summer.

Lovely native.  Prefers sunny dry areas; in Wildwood found along wood edges.

There are many yellow members of the Sunflower Family, and they are often hard to tell apart.  Greater coreopsis, however, is distinctive because of the unusual arrangement of leaves into apparent whorls of six. Lanceleaf coreopsis (Coreopsis lanceolata) has a neater flowerhead, but much less organized leaves.