Symphyotrichum ontarionis (Wieg.) Nesom var. ontarionis is the more southern race of the species.
Brouillet, L., J.C. Semple, G.A. Allen, K. Chambers and S. Sundberg. 2006. Symphyotrichum Nees. pp. 465-539. In Flora North America Editorial Committee, eds. Flora of North America. Vol. 20. Asteraceae, Part 2. Astereae and Senecioneae. Oxford University Press, New York.
Revised 5 May 2021 by J.C. Semple
© 2021 J.C. Semple, including all photographs unless otherwise indicated