Scientific Name: Ageratina altissima (L.) R. M. King & H. Rob.
Caption: Illustration of Ageratina altissima var. altissima from Flora of North America
Photographer: Taken from Nesom, Guy L. "Ageratina" in Flora of North America, Vol. 21, p. 549. Oxford University P
Notes: Illustration of Ageratina altissima var. altissima from Flora of North America

Full citation below:

Nesom, Guy L. "Ageratina" in Flora of North America, Vol. 21, p. 549. Oxford University Press, Inc.  New York, NY.  2006.

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