Ambrosia chamissonis var. bipinnatisecta (Lessing) J.T. Howell

Ambrosia chamissonis var. bipinnatisecta (Lessing) J.T. Howell is a synonym sensu FNA Ed. Comm., 2006c of:

Ambrosia chamissonis (Lessing) Greene, an accepted species name sensu FNA Ed. Comm., 2006c.