The text and picture below were posted earlier as a plant quiz. The plant was correctly named by Scott as Veronica officinalis, Common Speedwell. Good call, Scott! This attractive little garden escape has a definite preference for dry, eroded clay slopes in partial shade.
Posted previously: This plant was growing on a forested clay slope in St. Joseph County, Indiana. Do you recognize it? Feel free to name it or just take a guess. Good luck!