The inclusive genus Aster is here split into the genera Canadanthus, Doellingeria, Eurybia, Oclemena, Sericocarpus, and Symphyotrichum, leaving Aster as a primarily Eurasian genus represented by only one non-native species.
All species found in Aster
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. April 26, 2017. http://michiganflora.net/genus.aspx?id=Aster.