Acnida altissima Riddell ex Moquin-Tandon

Acnida altissima Riddell ex Moquin-Tandon is a synonym sensu FNA Ed. Comm., 2003a of:

Amaranthus tuberculatus (Moquin-Tandon) J.D. Sauer var. tuberculatus, an accepted variety name sensu Costea & Tardif, 2003.