Flora of North America species comparison

1, glabrous or leaf axils tomentose.

1 or multiple (crowded to subcespitose), floccose-tomentose or glabrescent.

(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).

petiolate;

blades lanceolate to oblanceolate, 30–60+ × 10–30+ mm, bases tapering, margins shallowly, evenly pinnatifid to pinnatisect or wavy (adaxial faces floccose-tomentose or subglabrescent).

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

gradually reduced (sessile; lanceolate to oblanceolate, pinnatisect to wavy).

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

bracteate, densely to irregularly floccose.

8–10+;

corolla laminae 10–15+ mm.

6–8+;

corolla laminae 5–7 mm.

45–60+;

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

30–40+;

corolla tubes 2.5–3 mm, limbs, 2.5–3.5 mm.

13 or 21, green, 7–9+ mm, glabrous.

13, green, 5–7 mm, floccose proximally to glabrescent distally.

inconspicuous.

0 or inconspicuous (bractlets red-tinged).

15–50+ in corymbiform arrays.

6–25+ in open or compact, corymbiform arrays.

2–2.5 mm, glabrous;

pappi 6–7 mm.

2.5–3 mm, glabrous;

pappi 4–5 mm.

= 46.

= 46.