Growing in eastern PA. along the river. Small tree. Smells of orange peels when you crush its leaves.
It resemble Lindera benzoin (northern spicebush). http://www.mobot.org/gardeninghelp/PlantFinder/Plant.asp?code=D890 HTH Chris
I believe that just might be it. Thanks Chris. I'll have to go back and see if any of it has the red fruits. The specimen I brought home has none.