Lophotocarpus spongiosus var. spongiosa (Engelmann) B. Boivin

Lophotocarpus spongiosus var. spongiosa (Engelmann) B. Boivin is a synonym of:

Sagittaria montevidensis subsp. spongiosa (Engelmann) Bogin, an accepted subspecies name sensu FNA Ed. Comm., 2000.