Stems slender, smooth, erect, 6 to 28 inches high, solitary or tufted from a perennial, strong-scented root. Basal leaves ovate, orbicular or oblong-ovate, heart-shaped at the base and long petioled, usually pointed at the apex, the margins crenately toothed, 1 to 6 inches long; lower stem leaves lanceolate or oblong, usually deeply cut or cleft, the upper leaves small, sessile and clasping the stem. Heads of flowers numerous, on slender peduncles, forming an open corymb, bright golden yellow; each head one-half to three-fourths of an inch broad and one-third to one-half of an inch high. Ray flowers eight to twelve in number, linear-lanceolate; pappus white.
Memoir 15 N. Y. State Museum
Golden Ragwort; Swamp Squawweed - Senecio aureus