Flora of North America species comparison

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

1 or 2–4, loosely clustered, glabrous or sparsely tomentose proximally.

(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.

petiolate;

blades lanceolate to narrowly elliptic or oblanceolate, 30–60+ × 10–20+ mm, bases tapering, sometimes obtuse, margins subentire to dentate or serrate.

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

gradually reduced (proximals petiolate, sublyrate; mids sessile, not clasping, lanceolate, dissected, incised, or lacerate; distals sessile, bractlike).

bracteate, sparsely to densely lanate-tomentose.

usually bracteate, sometimes ebracteate, glabrous.

8 or 13;

corolla laminae 10–15 mm.

0, 8, or 13;

corolla laminae (pale yellow) 5–10+ mm.

35–50+;

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

50–65+;

corolla tubes 2–3 mm, limbs 2–3 mm.

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

13 or 21, green, 5–8+ mm, glabrous.

inconspicuous (bractlets tomentose).

inconspicuous.

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

2–10+ in loose or compact, corymbiform arrays.

1–1.5 mm, glabrous;

pappi 6–7 mm.

1–2 mm, usually glabrous, sometimes hispidulous on ribs;

pappi 3.5–4.5 mm.

= 46.

= 44, 46, 92.