Spongy Arrowhead
Sagittaria spatulata (J.G. Smith) Buchenau
Spongy Arrowhead: https://marylandbiodiversity.com/species/3890
Synonyms
Lophotocarpus spongiosus
Sagittaria calycina var. spongiosa
Sagittaria montevidensis ssp. spongiosa
Sagittaria spathulata (orth. var.)
Tidal Arrowhead