Ranunculus abortivus Linnaeus. Subgenus: Auricomus. Section: Auricomus. Kidneyleaf Buttercup, Early Wood Buttercup. Phen: (Feb-) Mar-Jun. Hab: Bottomland and other moist forests, low fields, disturbed areas, lawns, roadsides. Dist: NL (Labrador) to AK, south to FL, TX, and CO.

ID notes: A common plant, sometimes pretty weedy, in shady and sunny places, recognizable from its cordate, basal leaves that are broader than long, and with distinctive broad teeth that are flattish.

Origin/Endemic status: Native

Synonymy: = Ar, Fl2, FNA3, GrPl, GW2, K1, K3, K4, Mi, NcTx, NE, NY, Pa, RAB, S, Tx, Va, W, WH3, WV, Keener (1976); > Ranunculus abortivus L. var. abortivus – C, F, G, Il; > Ranunculus abortivus L. var. acrolasius Fernald – F, Il; > Ranunculus abortivus L. var. eucyclus Fernald – F; > Ranunculus abortivus L. var. indivisus Fernald – F

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