Veronica anagallis-aquatica Linnaeus. Phen: Apr-Sep; Jul-Oct. Hab: Bogs, marshes, streamsides, ditches. Dist: Circumboreal, south in North America to c. peninsular FL, TX, and CA; some occurrences probably represent introductions of European material. Some authors interpret V. anagallis-aquatica as being strictly non-native in North America.
Origin/Endemic status: Native
Synonymy: = Ar, C, F, Fl6, FNA17, G, GrPl, Il, NcTx, NE, NY, Pa, Tn, Tx, Va, WV, Crow & Hellquist (2000a), Pennell (1935), Stace (2010); = Veronica anagallis-aquatica L. var. anagallis-aquatica – Mi; < Veronica anagallis-aquatica L. – C, K1, K3, K4, RAB, W, WH3, Walters & Webb (1972) in Tutin et al (1972)