References

For Ageratina

Clewell, A.F., and J.W. Wooten. 1971. A revision of Ageratina (Compositae: Eupatorieae) from eastern North America. Brittonia 23: 123-143. Google Scholar

Cronquist, A. 1980. Asteraceae, Volume I, Vascular flora of the Southeastern United States. University of North Carolina Press, Chapel Hill, N.C. Google Scholar

Lamont, E.E. 2018. Ageratina roanensis (Asteraceae), a new combination for an endemic species from the Southern Appalachian Mountains. Phytoneuron 2018-77: 1-3. Published 5 November 2018. ISSN 2153 733X Google Scholar

Nesom, G.L. 2006mm. Ageratina. In Flora of North America Editorial Committee. 2006c. Flora of North America north of Mexico. Volume 21, Magnoliophyta: Asteridae, part 6: Asteraceae, part 3. Oxford Univ. Press, New York, NY. 616 pp. Google Scholar