Flora of North America species comparison

(robust) 60–150 cm, coarsely hispid (10–70 hairs/mm2) (hairs stiff).

1–10+, erect, stout, hairy.

basal large, to 250 × 100 mm;

faces moderately to densely hispid (7–50 hairs/mm2);

mid to distal ovate, thick.

basal and proximal cauline usually present at flowering, abruptly narrowed to long petioles, blades ovate to rhombic, 80–200 × 24–50 mm, firm, flat, margins entire to crenate, sometimes undulate, apices obtuse to acute, faces densely hairy;

mid to distal cauline sessile, blades ovate, 30–50 × 15–17 mm, stiff, greatly reduced distally, margins entire or finely serrate, sometimes undulate, apices acute to obtuse.

densely hispido-strigose.

3–15 mm, strigillose-canescent, bracteoles 1–3, linear-lanceolate.

campanulate, 6–8 mm.

6–13;

laminae 1.4–5.4 × 1.2–1.9 mm.

14–35;

corollas 4.3–6.1 mm, lobes 0.6–1.1 mm.

lobes deep, 1.1–1.6 mm.

outer hairy;

inner oblong to slightly spatulate, 0.8–1.4 mm wide, glabrate to puberulent.

in 3–4 series, unequal, oblong, conspicuously striate (3–5 pronounced nerves), obtuse.

usually in loose, open, spreading, flat-topped arrays, 3–20(–34) × (4.5–)6.5–18(–27) cm.

9–190, in corymbiform arrays, compact or branches long and spreading, densely hairy throughout.

glabrous.

(obconic) 0.8–1.7 mm (ribbed), glabrous or strigillose apically;

pappi 3–4 mm.

= 18, 36.