Senecio psilocarpus

Erect glabrescent herb to c. 80 cm high, mostly unbranched below inflorescence, arising annually from a perennial rootstock. Leaves sessile or the lower pseudopetiolate, upper leaves usually auriculate, oblanceolate to lanceolate, 3–12 cm long, 5–13 mm wide, remotely dentate or denticulate, glabrous, or occasionally sparsely hispid along margins. Inflorescence with 2–20(–34) capitula; capitula non-radiate; involucre cylindric or narrowly campanulate, (4.5–)5–6.5(–7.5) mm long, glabrous, or very sparsely cobwebbed near base; bracts 12–16(–21), recurved at apices soon after anthesis; bracteoles present; florets 40–70, bisexual and unisexual. Cypselas cylindric, often slightly curved, 1.8–2.5 mm long, glabrous, shining reddish-brown; pappus of slender hairs 4–5 mm long, deciduous. Flowers Nov.–Mar.