Annuals, biennials, or perennials, to 100 cm (taprooted). Stems softly pilose to woolly (hairs spreading, 1–4 mm, longer ones toward bases). Leaves: blades oblong to oblong-lanceolate (not lobed), margins entire or serrate, apices acute to obtuse, faces softly pilose to woolly, gland-dotted; basal petiolate, 5–12 × 0.5–2 cm, bases attenuate; cauline sessile, (elliptic to pandurate) 1.5–10 × 1–4 cm (mid largest, bases cuneate to auriculate). Heads borne singly or (2–12) in loose, corymbiform arrays. Phyllaries to 1.5 cm (faces hairy and gland-dotted). Receptacles conic to hemispheric; paleae 5–6.5 mm, apices acute, abaxial tips hirsute and gland-dotted. Ray florets 10–16; laminae linear to oblanceolate, 20–40 × 4–7 mm, abaxially hairy and gland-dotted. Discs 10–20 × 12–18 mm. Disc florets 200–400+; corolla bases yellowish green, otherwise brown-purple, 3–4.2 mm; style branches ca. 1.5 mm, apices acute to obtuse. Cypselae 2.5–3.5 mm; pappi 0 or coroniform, to 0.1 mm. 2n = 38.
Home