Packera glabella (Poiret) C. Jeffrey. Butterweed, Smooth Ragwort, Smooth Groundsel, Yellowtop. Phen: Mar-early Jun. Hab: Swamp forests, bottomland forests, cleared areas in bottomlands, wet agricultural fields, ditches, often in mucky soils. Dist: E. NC south to s. FL, west to e. TX, north in the interior to sw. WV, OH, MO, and SD.

Origin/Endemic status: Native

Synonymy: = Ar, Fl7, FNA20, Il, K1, K3, K4, Mi, Pa, Tn, WH3, Barkley (1999); = Senecio glabellus Poir. – C, F, G, GrPl, GW2, Oh3, RAB, S, SE1, WV, Barkley (1978); = Senecio lobatus Pers.

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