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Plants 33–117 cm. Stems erect, hairy. Leaves basal and proxi-malmost cauline withering by flowering; cauline sessile; blades obovate, 10–40 × 3–10 mm, margins entire, apices acuminate to slightly cuspidate, faces hairy, resinous. Heads 2–4 per branch, in corymbiform arrays. Peduncle bracts broadly lanceolate to narrowly ovate, hairy. Involucres 5–8 mm. Phyllaries in 4–5 series, outer 2–3 mm, first mid 3–4 mm, second mid 4–6 mm, puberulent. Ray florets 2–5; corolla tubes 3–4 mm, laminae 3–6 mm. Disc florets 6–11; corolla tubes 4–6 mm, lobes 1–2 mm. Ovaries fusiform-obconic, 1–3 mm, densely strigose; pappi: inner series 6–8 mm. 2n = 18.


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© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

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