Flora of North America species comparison

1 or, usually, multiple, clustered, densely tomentose to glabrescent.

usually 1, sometimes 2, densely tomentose (at least proximally), becoming glabrate distally.

(soon withering), petiolate;

blades lyrate (lateral lobes 2–6+ pairs), ovate, obovate, or spatulate, 70–100+ × 20–30+ mm, bases tapering, ultimate margins irregularly and coarsely serrate-dentate.

(relatively leathery) sessile;

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

gradually reduced (± petiolate, proximal and mid similar to basal, terminal lobes smaller than laterals; distal sessile, incised).

abruptly reduced (linear, bractlike).

bracteate, sparsely to densely lanate-tomentose.

bracteate, tomentose or glabrate.

8 or 13;

corolla laminae 10–15 mm.

0 or 5–8;

corolla laminae 4–7 mm.

35–50+;

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

30–40+;

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

13 or 21, green (tips sometimes yellow), 8–10+ mm, densely tomentose proximally, glabrescent distally.

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

inconspicuous (bractlets tomentose).

conspicuous.

5–20+ in open or compact (rarely), cymiform arrays.

1(–2).

1–1.5 mm, glabrous;

pappi 6–7 mm.

3–3.5 mm, hirtellous;

pappi 5–6 mm.

= 46.