Flora of North America species comparison

1, glabrous or leaf axils tomentose.

1, glabrous or bases hairy.

(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).

(and proximal cauline, relatively turgid or leathery) petiolate;

blades reniform to suborbiculate, 40–70+ × 40–80+ mm, bases truncate to cordate, margins dentate or shallowly lobed.

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

abruptly reduced (petiolate or sessile, oblanceolate, pinnatifid; distal sessile, bractlike).

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

ebracteate (or bractlets 1–2), glabrous.

8–10+;

corolla laminae 10–15+ mm.

13 or 21;

corolla laminae 10–12+ mm.

45–60+;

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

40–60+;

corolla tubes 3–4 mm, limbs 2.5–3.5 mm.

13 or 21, green, 7–9+ mm, glabrous.

(13–)21, dark green with yellow margins, 8–11+ mm, glabrous.

inconspicuous.

0 or inconspicuous.

15–50+ in corymbiform arrays.

3–6+ in compact, cymiform arrays.

2–2.5 mm, glabrous;

pappi 6–7 mm.

5–6 mm, glabrous;

pappi 5–7 mm.

= 46.