Flora of North America species comparison

1, glabrous or leaf axils tomentose.

1 (often branched proximally, sometimes distally), sparsely to densely floccose-tomentose.

(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 elliptic to oblanceolate or ovate, 20–80+ × 20–60+ mm, bases tapering, margins entire, crenate-serrate, or irregularly to pinnately lobed (abaxial faces white-tomentose, adaxials patchy tomentose to glabrate).

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

gradually to abruptly reduced (sessile; mids lanceolate to oblanceolate, irregularly serrate to pinnately lobed, distals bractlike).

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

bracteate, ± tomentose.

8–10+;

corolla laminae 10–15+ mm.

10–13+;

corolla laminae 8–12+ mm.

45–60+;

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

60–70+;

corolla tubes 1–1.5 mm, limbs 2–2.5 mm.

13 or 21, green, 7–9+ mm, glabrous.

13 or 21, green (sometimes with purple streaks, tips usually purple), 4–8 mm, proximally tomentose, rarely glabrous.

inconspicuous.

conspicuous (bractlets purple-tinged).

15–50+ in corymbiform arrays.

1(–3).

2–2.5 mm, glabrous;

pappi 6–7 mm.

1–1.5 mm, glabrous;

pappi 2.5–3 mm.

= 46.

= 92.