Ammannia latifolia Linnaeus. Common name: Pink Redstem. Phenology: Jul-Sep. Habitat: Brackish to fresh tidal marshes, wet places, ditches. Distribution: NJ south to s. FL and west to TX (mostly on the Coastal Plain), and also in the West Indies, Yucatan, Central America, and South America.

Origin/Endemic status: Native

Taxonomy Comments: All plants in North America north of Florida have flowers with petals; most plants from FL south through the West Indies into Central and South America have flowers without petals. Graham (1985) considered these forms; additional study is warranted. The name A. koehnei Britton is available for the petaliferous North American plant should its recognition prove warranted.

Synonymy ⓘ: = C, Fl4, FNA10, GW2, K4, Meso4.1, NcTx, Va, W, WH3, Graham (1975), Graham (1985); > Ammannia koehnei Britton — S, S13, Tat; > Ammannia latifolia L. — S, S13; > Ammannia teres Raf. — G, RAB, Tx; > Ammannia teres Raf. var. exauriculata (Fernald) Fernald — F; > Ammannia teres Raf. var. teres — F; Ammannia latifolia L. Basionym: Ammannia latifolia L. 1753

Links to other floras: = Ammannia latifolia - FNA10

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: OBL
• Eastern Mountains and Piedmont: OBL
• Great Plains: OBL
• Northcentral & Northeast: OBL

Heliophily ⓘ: 9