This native annual has an erect, angled stem, up to 6 feet tall, with large alternate leaves on long stalks (C,D). The leaves are triangular, up to 8 inches long, with large teeth, somewhat resembling maple leaves (A,C). The tiny greenish flowers are densely clustered on branched spikes forming a plume at the top of the plant (A,B). The fruit is shiny black, encased in tepals which turn pink by October (D).