Sagittaria spongiosa (Engelmann) Werier. clade: Calycina Group. Tidal Arrowhead. Phen: May-Sep. Hab: Tidal marshes and mud flats. Dist: NB south to e. NC along the coast.
Origin/Endemic status: Native
Taxonomy Comments: Werier & Kartesz (2013) clarified that the name S. spongiosa has priority over S. spatulata when the two are combined (as here) as a single taxon at species rank.
Synonymy ⓘ: = Werier & Gandhi (2023); = Sagittaria spathulata – K3, K4, orthographic variant; = Sagittaria spatulata (J.G.Sm.) Buchenau – C, G, Va; > Lophotocarpus spongiosus (Engelm.) J.G.Sm. – F, Tat; < Sagittaria calycina Engelm. – Pa, RAB; > Sagittaria calycina Engelm. var. spongiosa Engelm. – K1; > Sagittaria montevidensis Cham. & Schltdl. ssp. spongiosa (Engelm.) Bogin – AqW, FNA22, NE, NY, Bogin (1955), Keener (2005)
Links to other floras: > Sagittaria montevidensis ssp. spongiosa - FNA22
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