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 sparsely 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 narrowly ovate to oblong-lanceolate, 30–70+ × 10–20+ mm, bases abruptly contracted to subcordate, margins usually serrate-dentate, sometimes subcrenate (apices acute).

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

gradually reduced (± sessile; lacerate to subcrenate).

0 (or relatively reduced, then densely tomentose).

bracteate, glabrous.

(5–)8;

corolla laminae 8–10+ mm.

8–13;

corolla laminae 4–7 mm.

35–45+;

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

50–70+;

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 or 21, light green (tips sometimes black), 5–8 mm, glabrous.

inconspicuous (bractlets red-tipped).

conspicuous.

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

8–20+ in loose, corymbiform arrays.

1–1.5 mm, glabrous;

pappi 5–6 mm.

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

= 46.

= 44.