Eryngium aquaticum Linnaeus. Marsh Eryngo. Phen: Jul-Sep. Hab: Tidal freshwater to brackish marshes; slightly inland in wet peaty pine savannas over calcareous substrates. Dist: NY (Staten Island) and NJ to ne. FL along the Atlantic coast; Gulf Coast of FL Panhandle, s. AL, and s. MS.

Origin/Endemic status: Endemic

Synonymy: = Eryngium aquaticum L. var. aquaticum – K1, K3, K4, MC, NY, RAB, Va, Bell (1963); = Eryngium virginianum Lam. – S; < Eryngium aquaticum L. – C, F, Fl7, G, GW2, Pa, WH3

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