Besides our eastern North American forest understory species, the genus includes a few others in eastern Asia.
All species found in Stylophorum
Citation:
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 24, 2020. https://michiganflora.net/genus.aspx?id=Stylophorum.