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 2, densely tomentose (at least proximally), becoming glabrate distally.

(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).

(relatively leathery) sessile;

blades linear, 10–15+ × 1–2 mm, margins entire (revolute).

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

abruptly reduced (linear, bractlike).

0 (or relatively reduced, then densely tomentose).

bracteate, tomentose or glabrate.

(5–)8;

corolla laminae 8–10+ mm.

0 or 5–8;

corolla laminae 4–7 mm.

35–45+;

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

30–40+;

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

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

13, purple to deep reddish purple, 6–9+ mm, hairy or glabrescent.

inconspicuous (bractlets red-tipped).

conspicuous.

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

1(–2).

1–1.5 mm, glabrous;

pappi 5–6 mm.

3–3.5 mm, hirtellous;

pappi 5–6 mm.

= 46.