Flora of the Southeastern United States

Cicuta maculata Linnaeus var. maculata. Common name: Water-hemlock. Phenology: May-Aug; Jul-Sep. Habitat: Marshes, bogs, seepages, fens, ditches, swamp forests. Distribution: Nova Scotia west to Alaska, south to Florida, California; Mexico.

Origin/Endemic status: Native

Taxonomy Comments: Three other varieties are more northern or western: var. victorinii (Fernald) B. Boivin of QC, var. angustifolia Hooker of western North America, and var. bolanderi.

Other Comments: All parts of the plant, especially the tubers, are dangerously poisonous. Some authorities consider this to be the most poisonous plant of the North Temperate zone (Diggs et al. 1999).

Synonymy ⓘ: = C, Can, F, FNA13, G, GrPl, K1, K4, NE, NS, NY, Pa, Va, Mulligan (1980); = n/a; < Cicuta curtissii J.M. Coulter & Rose — Tat; > Cicuta curtissii J.M. Coulter & Rose — S, S13; < Cicuta maculata L. — Ar, Fl7, Il, Mi, NcTx, Ok, Tn, W, WH3; >< Cicuta maculata L. — GW2, MC, RAB, S13, Tat, Tx; > Cicuta maculata L. var. curtissii (J.M.Coult. & Rose) Fernald — F, G; > Cicuta maculata L. var. maculata — Mo2, POWO; > Cicuta mexicana J.M. Coulter & Rose — GW2, MC, POWO, RAB, Tx. Basionym: Cicuta maculata L. 1753

Links to other floras: = Cicuta maculata var. maculata - FNA13

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: OBL (taxonomic split from wetland indicator species)
• Eastern Mountains and Piedmont: OBL (taxonomic split from wetland indicator species)
• Great Plains: OBL (taxonomic split from wetland indicator species)
• Midwest: OBL (taxonomic split from wetland indicator species)
• Northcentral & Northeast: OBL (taxonomic split from wetland indicator species)

Heliophily ⓘ: 7