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.

usually 1, sometimes multiple, bases and leaf axils tomentose, otherwise glabrous.

(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 oblanceolate to obovate or lyrate (pinnately lobed to pinnatifid, terminal lobes larger than laterals), 10–30+ × 10–20+ mm, bases tapering, ultimate margins ± crenate to serrate.

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

gradually to abruptly reduced (sessile; pinnatisect or entire).

0 (or relatively reduced, then densely tomentose).

bracteate (bractlets purple-tinged), glabrous or glabrate.

(5–)8;

corolla laminae 8–10+ mm.

0 (rarely) or 10–12;

corolla laminae 8–10 mm.

35–45+;

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

45–60+;

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

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

13, green (sometimes purple-tinged distally), 6–8 mm, glabrous.

inconspicuous (bractlets red-tipped).

0 or inconspicuous (bractlets purple-tinged).

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

1–2(–5+) in cymiform arrays.

1–1.5 mm, glabrous;

pappi 5–6 mm.

1.5–2.5 mm, hirtellous on ribs;

pappi 6–7 mm.

= 46.

= 46.