Bacopa innominata (M. Gómez) Alain. Common name: Tropical Water-hyssop. Phenology: Jun-Sep. Habitat: Freshwater and tidal muds, marshes, shallow water. Distribution: MD south to s. FL, and in the West Indies and Central America.

Origin/Endemic status: Native

Taxonomy Comments: B. stragula Fernald has been considered a rare endemic of tidal areas in VA and MD, differing from B. innominata in its glabrous stems (vs. pubescent), smaller flowers (the corolla < 3 mm long vs. > 3 mm long), and shorter, glabrous pedicels 3-6 mm long (vs. pubescent and to 8 mm long). Schuyler (1989) concluded that B. stragula is an intertidal form of B. innominata, the morphologic differences induced by the flooding regime. Additional work, perhaps involving growth under experimental conditions or chemical or molecular studies, is needed to corroborate Schuyler's conclusion. See Schuyler (1989), F, and Fernald (1942) for further discussion.

Synonymy ⓘ: = C, Fl6, FNA17, GW2, K4, Va, WH3, Schuyler (1989), Tippery et al (2024); > Bacopa cyclophylla Fernald — RAB; > Bacopa stragula Fernald — F, G, Tat; ? Herpestis rotundifolia Gaertner f. — S, Pennell (1935); ? Macuillamia obovata Raf. — Pennell (1935); Conobea innominata M. Gómez. Basionym: Conobea innominata M.Gómez 1894

Links to other floras: = Bacopa innominata - FNA17

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: OBL

Heliophily ⓘ: 8