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 or 2–5, loosely clustered, bases densely tomentose, leaf axils usually 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).

petiolate;

blades narrowly elliptic to oblanceolate, 30–90+ × 10–20+ mm, bases tapering, margins serrate to crenate-serrate (apices rounded to acute, faces glabrous).

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

gradually reduced (petiolate or sessile; elliptic to lanceolate, often pinnatifid).

0 (or relatively reduced, then densely tomentose).

bracteate, distally tomentose.

(5–)8;

corolla laminae 8–10+ mm.

8 or 13;

corolla laminae 5–7+ mm.

35–45+;

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

45–60+;

corolla tubes 1.5–2 mm, limbs 1.5–2 mm.

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

13 or 21, light green, 3–5 mm, glabrous.

inconspicuous (bractlets red-tipped).

inconspicuous.

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

20–70(–100+) in corymbiform arrays.

1–1.5 mm, glabrous;

pappi 5–6 mm.

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.

= 46.

= 44.