Flora of North America species comparison

1, glabrous or leaf axils tomentose.

1 or 2–5, loosely clustered, bases densely tomentose, leaf axils usually 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 narrowly elliptic to oblanceolate, 30–90+ × 10–20+ mm, bases tapering, margins serrate to crenate-serrate (apices rounded to acute, faces glabrous).

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

gradually reduced (petiolate or sessile; elliptic to lanceolate, often pinnatifid).

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

bracteate, distally tomentose.

8–10+;

corolla laminae 10–15+ mm.

8 or 13;

corolla laminae 5–7+ mm.

45–60+;

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

45–60+;

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

13 or 21, green, 7–9+ mm, glabrous.

13 or 21, light green, 3–5 mm, glabrous.

inconspicuous.

inconspicuous.

15–50+ in corymbiform arrays.

20–70(–100+) in corymbiform arrays.

2–2.5 mm, glabrous;

pappi 6–7 mm.

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.

= 46.

= 44.