Ambrosia trifida var. integrifolia (Muhlenberg) Torrey & A. Gray

Ambrosia trifida var. integrifolia (Muhlenberg) Torrey & A. Gray is a synonym sensu FNA Ed. Comm., 2006c of:

Ambrosia trifida Linnaeus, an accepted species name sensu FNA Ed. Comm., 2006c.