Centaurium pulchellum, Showy Centaury. This tiny, non-native member of the Gentianaceae grows in ruderal areas of northern Indiana. It prefers barren gray clay and compacted limestone gravel. This one was growing in compacted gravel at Beverly Shores, Indiana. I'm reminded of Aldo Leopold's description of tiny Draba: "... just a small creature that does a small job quickly and well." I'm claiming the Gentianaceae.