This genus of attractive plants is centered in the southeastern United States, where all the species occur; only one ranges into Michigan. The stems (in our species) are ± sharply 4-angled or even very narrowly winged, as they are in Centaurium and some other genera.
All species found in Sabatia
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. July 23, 2019. https://www.michiganflora.net/genus.aspx?id=Sabatia.