Flora of North America species comparison

1, glabrous or leaf axils tomentose.

usually 1, sometimes 2, densely tomentose (at least proximally), becoming glabrate distally.

(and proximal cauline) petiolate;

blades spatulate to obovate (pinnately lobed, terminal lobes ovate to oblong, lateral lobes 2–6+ pairs, smaller, midribs narrowly winged), 100–300+ × 20–50(–80+) mm, bases contracted to tapering, ultimate margins crenate or dentate to lacerate (faces glabrous).

(relatively leathery) sessile;

blades linear, 10–15+ × 1–2 mm, margins entire (revolute).

gradually reduced (petiolate or sessile; obovate, irregularly incised to subpinnate, terminal lobes narrow).

abruptly reduced (linear, bractlike).

usually ebracteate (rarely with 1–2 bractlets), glabrous.

bracteate, tomentose or glabrate.

8–10+;

corolla laminae 10–15+ mm.

0 or 5–8;

corolla laminae 4–7 mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–4.5 mm.

30–40+;

corolla tubes 2.5–3.5 mm, limbs 3.5–4 mm.

13 or 21, green, 7–9+ mm, glabrous.

13, purple to deep reddish purple, 6–9+ mm, hairy or glabrescent.

inconspicuous.

conspicuous.

15–50+ in corymbiform arrays.

1(–2).

2–2.5 mm, glabrous;

pappi 6–7 mm.

3–3.5 mm, hirtellous;

pappi 5–6 mm.

= 46.