Lophotocarpus calycinus var. spongiosus (Engelmann) Fassett

Lophotocarpus calycinus var. spongiosus (Engelmann) Fassett is a synonym sensu TROPICOS of:

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