Slender Scratchdaisy

Stems erect, 20–100 cm. Cauline leaf blades lanceolate to linear, reduced distally (becoming bractlike near heads), margins usually serrate apically, rarely entire. Peduncles usually glabrate, sometimes hispid, stipitate-glandular. Involucres turbinate, (2–)2.5–5 mm diam. Ray florets 5–11; corolla laminae 4–6 mm. Disc florets (9–)14–22(–26). 2n = 8.

Inula divaricata Nuttall, Gen. N. Amer. Pl. 2: 152. 1818