Senecio glabrescens

Erect annual or biennial to 40 cm high; stems glabrescent or sparsely appressed-cottony, multiple from base and branching from lower axils in first season. Leaves glabrous or minutely scabridulous on lowerstem leaves above, sparsely to moderately cobwebby below; mid-stem leaves sessile, auriculate with auricles bi- or tri-dentate, slightly amplexicaul, very narrow-elliptic or linear, 8–24 cm long, to 10 mm wide; upper leaves narrow-lanceolate. Inflorescences corymbose, typically with 50–200 capitula; capitula non-radiate; involucre narrowly cylindric, 6.0–8.0 mm long, cobwebbed near base; bracts 12–14; bracteoles present; florets 30–40, bisexual and female. Cypselas lageniform, 4.0–5.0 mm long, orange-brown or brown, papillose-hairy in lines; pappus of slender hairs 5–7 mm long, deciduous. Flowers summer–autumn.