Flora of North America species comparison

1, glabrous or leaf axils tomentose.

1 or 2–3+, clustered, glabrous or leaf axils 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 cordate to reniform, 20–60 × 20–60 mm, bases abruptly contracted or ± cordate, margins crenate to crenate-serrate (apices rounded, faces glabrous).

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

gradually reduced (petiolate or sessile, not clasping; blades oblong to lyrate, lateral lobes 2–4 pairs).

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

bracteate, glabrous or sparsely tomentose.

8–10+;

corolla laminae 10–15+ mm.

(8–)10–13;

corolla laminae 8–10+ mm.

45–60+;

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

55–70+;

corolla tubes 3–3.5 mm, limbs 2–2.5 mm.

13 or 21, green, 7–9+ mm, glabrous.

13–21, green (tips purple or black), 6–8 mm, glabrous or sparsely tomentose proximally.

inconspicuous.

inconspicuous.

15–50+ in corymbiform arrays.

6–20+ in corymbiform to subumbelliform arrays.

2–2.5 mm, glabrous;

pappi 6–7 mm.

1–1.5 mm, glabrous;

pappi 4.5–5.5 mm.

= 46.

= 44.