Flora of North America species comparison

1 (striated, frequently hollow, often pink- to purple-tinged), glabrous or leaf axils sparsely tomentose.

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

(and proximal cauline) obscurely petiolate;

blades obovate to oblanceolate, sometimes lyrate (lateral lobes to 5 pairs, terminal lobes larger than laterals), 50–150+ × 10–30+ mm, bases tapering, ultimate margins crenate to irregularly undulate.

(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.

gradually reduced (weakly clasping, similar to basal).

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

bracteate, glabrous or bases tomentose.

bracteate, sparsely to densely lanate-tomentose.

(8–)13;

corolla laminae 7–9 mm.

8 or 13;

corolla laminae 10–15 mm.

35–50+;

corolla tubes 2.5–3.5 mm, limbs 2–3 mm.

35–50+;

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

(13–)21, green, 5–7 mm, glabrous.

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

conspicuous (bractlets 2.5–4 mm).

inconspicuous (bractlets tomentose).

8–30+ in umbelliform or cymiform arrays (robust plants with multiple arrays).

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

1–1.5 mm, sparsely hirtellous on ribs or glabrous;

pappi 3–4 mm.

1–1.5 mm, glabrous;

pappi 6–7 mm.

= 46.

= 46.