See... I *knew* you guys would be smart & know it. I consulted the plants.usda.gov website and my suspicion is that it's Phyla lanceolata. It's one of the few species that reaches into Ohio. The missouriplants.com website has a great page on it, and the leaves seem to match the ones in my own pictures. http://missouriplants.com/Whiteopp/… I find it interesting it's considered a common wildflower, and I've never encountered anything like it before today. I thought for sure it was an exotic species. Boy was I wrong! Thanks everyone!!! Dennis in Cincy