Ranunculus sceleratus Linnaeus var. sceleratus . Subgenus: Auricomus. Section: Hecatonia. Phen: Apr-Sep. Hab: Marshes, ditches, and stream margins. Dist: The species is circumboreal, ranging south in North America (partly introduced, at least southward) to n. FL, LA, TX, and CA.
Origin/Endemic status: Native
Taxonomy Comments: Var. sceleratus is widespread and the only variety in e. North America; var. multifidus occurs in w. North America. The epithet has sometimes been misspelled ‘scleratus’.
Synonymy: = Ar, C, F, FNA3, G, GrPl, K1, K3, K4, NE, NY, Va; < Ranunculus sceleratus L. – Fl2, GW2, Il, Mi, NcTx, Pa, RAB, S, Tn, Tx, W, WH3, Keener (1976)