(Some of the Senecio species contain toxic pyrrolizidine alkaloids. More info here: Livertoxic PAs --Henriette.)
592. SENECIO AUREUS Linné, N.F.—LIFE-ROOT. RAGWORT. (Herb.) Used by the Indians as a vulnerary. Emmenagogue. Dose: 30 to 60 gr. (2 to 4 Gm.), in infusion, decoction, or fluidextract.
A Manual of Organic Materia Medica and Pharmacognosy, 1917, was written by Lucius E. Sayre, B.S. Ph. M.