Sagittaria isoetiformis J.G. Smith. clade: Graminea Group, Graminea Complex. Quillwort Arrowhead. Phen: Jun-Sep. Hab: Pineland ponds, clay-based Carolina bays, natural lake shoreline marshes, other seasonally flooded depressions. Dist: Se. NC south to s. peninsular FL, west to s. MS (Sorrie & Leonard 1999)

Origin/Endemic status: Endemic

Taxonomy Comments: See Godfrey & Adams (1964) for additional discussion of this species.

Synonymy: = FNA22, GW1, K1, K3, K4, S, WH3, Keener (2005), Sorrie, Keener, & Edwards (2007), Wooten (1973); < Sagittaria graminea Michx. var. graminea – Bogin (1955); < Sagittaria teres S.Watson – RAB, S, misapplied

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