Flora of North America species comparison

1, glabrous or leaf axils tomentose.

usually 1, rarely 2–3, clustered, irregularly arachnoid-tomentose to lanate-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).

(and proximal cauline, relatively turgid) petiolate;

blades broadly ovate or lyrate (± pinnately lobed, lateral lobes 1–3 pairs, smaller than terminals), 10–30+ × 10–20+ mm, bases tapering to cuneate, ultimate margins subentire or crenate to coarsely dentate (abaxial faces tomentose).

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

gradually reduced (sessile; bractlike, entire).

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

bracteate, irregularly tomentose.

8–10+;

corolla laminae 10–15+ mm.

8–13;

corolla laminae 8–10 mm.

45–60+;

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

60–75+;

corolla tubes 2.5–4 mm, limbs 3.5–5 mm.

13 or 21, green, 7–9+ mm, glabrous.

(8–)13 or 21, green, 7–10+ mm, densely tomentose proximally, glabrescent distally (tips hair-tufted).

inconspicuous.

inconspicuous.

15–50+ in corymbiform arrays.

3–6 in cymiform arrays.

2–2.5 mm, glabrous;

pappi 6–7 mm.

2–2.5 mm, glabrous;

pappi 5–7 mm.

= 46.

= 46.