Sagittaria australis (J.G. Smith) Small. clade: Sagittifolia Group. Appalachian Arrowhead. Phen: Jun-Oct. Hab: Marshes, swamps, rivershores, backwaters, margins of ponds and lakes. Dist: NY west to s. IN and se. MO, south to SC, Panhandle FL, and MS.

Origin/Endemic status: Native

Synonymy: = Ar, C, F, FNA22, Il, K1, K3, K4, Pa, S, Va, W, WV, Beal, Wooten, & Kaul (1982), Keener (2005); = Sagittaria engelmanniana J.G.Sm. ssp. longirostra – G, GW1, Bogin (1955), misapplied; = Sagittaria longirostra – RAB, misapplied; < Sagittaria australis (J.G.Sm.) Small – WH3

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