Flora of North America species comparison

1–10, decumbent to ascending or erect, red-tinged, sometimes branched, sparsely leafy, ± tomentulose or glabrous, sometimes stipitate-glandular.

erect to ascending or decumbent, glabrous or sparsely tomentulose.

basal blades lanceolate or rarely oblanceolate to narrowly elliptic, 50–300 × 8–30 mm, margins sharply dentate, eciliate, apices acute, spinulose;

cauline sessile, lanceolate, bases clasping;

faces ± tomentulose to glabrate or glabrous, sometimes stipitate-glandular.

basal blades 50–180(–300) × 10–20(–30) mm, finely spinulose-serrate, faces glabrous or petioles sparsely tomentose, eglandular.

0–6 cm.

0–6 cm.

hemispheric, 7–10 × 10–18 mm.

7–10 × 12–18 mm.

18–45;

corollas 6–11 mm.

20–100;

corollas 5–7 mm.

in 3–4 series, linear-lanceolate to lanceolate, 3–11 mm, unequal, bases white-chartaceous, margins entire, eciliate, apices conspicuously green, faces glabrous or tomentulose, rarely stipitate-glandular.

(1–)4–20(–50) in corymbiform or paniculiform arrays.

(1–)5–20(–50) in corymbiform or paniculiform arrays.

oblong, 3.5–4.5 mm, 4-angled, faces striate, sericeous;

pappi tawny, 5–7 mm.

= 12, 24, 36.