Good call, Phytophactor and Scott. It is "ranunculaceous," and Scott is correct, it is Ranunculus fascicularis. This plant is especially at home on dry, sloping clay soil under a thin growth of oak and hickory. The specific epithet "fascicularis" refers to something being "bunched." The other day I saw this plant with its fascicled (or bunched) roots exposed from erosion. Amazing!