Flora of the Southeastern United States
2022 Edition


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Bacopa rotundifolia (Michaux) Wettstein. Midwestern Water-hyssop. Phen: May-Sep (-Nov). Hab: Tidal muds, shallow water of large natural lake, river sandbars, other shallow water and shore situations. Dist: IN and IA west to ND and MT, south to AL and AZ; disjunct in e. MD, e. VA, ne. NC, and e. SC (Bradley et al. [in prep.]), where apparently native, though Cronquist (1991) considered introduced. Known in NC only from Lake Mattamuskeet, Hyde County, where not seen since 1929.

Origin/Endemic status: Native

Syn: = Ar, C, FNA17, GrPl, GW2, Il, K1, K3, K4, Mo1, NcTx, Tn, Tx, Schuyler (1989); = Macuillamia rotundifolia – S, Pennell (1935); > Bacopa rotundifolia – F, G; > Bacopa simulans – F, G

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image of plant© Keith Bradley | Original Image ⭷
image of plant© Keith Bradley | Original Image ⭷