Flora of North America species comparison

1 or 2–3, clustered, densely lanate-tomentose or canescent, tufts of arachnoid tomentum in leaf axils, or glabrescent.

1, glabrous or leaf axils tomentose.

(thick, leathery) petiolate;

blades narrowly lanceolate or oblanceolate, 25–100+ × 5–20 mm, bases tapering, margins entire, subentire, dentate, or wavy (adaxial faces early 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).

gradually reduced (sessile; lanceolate to oblanceolate, entire or wavy).

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

0 (or relatively reduced, then densely tomentose).

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

(5–)8;

corolla laminae 8–10+ mm.

8–10+;

corolla laminae 10–15+ mm.

35–45+;

corolla tubes 2.5–3.5 mm, limbs 3.5–4.5 mm.

45–60+;

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

(8–)13, green (tips red), 3–6 mm, densely tomentose proximally, glabrate distally.

13 or 21, green, 7–9+ mm, glabrous.

inconspicuous (bractlets red-tipped).

inconspicuous.

10–30+ in open or congested, cymiform arrays.

15–50+ in corymbiform arrays.

1–1.5 mm, glabrous;

pappi 5–6 mm.

2–2.5 mm, glabrous;

pappi 6–7 mm.

= 46.

= 46.