Flora of North America species comparison

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

usually 1, sometimes multiple, bases and leaf axils tomentose, otherwise glabrous.

(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.

(and proximal cauline) petiolate;

blades oblanceolate to obovate or lyrate (pinnately lobed to pinnatifid, terminal lobes larger than laterals), 10–30+ × 10–20+ mm, bases tapering, ultimate margins ± crenate to serrate.

gradually reduced (weakly clasping, similar to basal).

gradually to abruptly reduced (sessile; pinnatisect or entire).

bracteate, glabrous or bases tomentose.

bracteate (bractlets purple-tinged), glabrous or glabrate.

(8–)13;

corolla laminae 7–9 mm.

0 (rarely) or 10–12;

corolla laminae 8–10 mm.

35–50+;

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

45–60+;

corolla tubes 3.5–4 mm, limbs 3–3.5 mm.

(13–)21, green, 5–7 mm, glabrous.

13, green (sometimes purple-tinged distally), 6–8 mm, glabrous.

conspicuous (bractlets 2.5–4 mm).

0 or inconspicuous (bractlets purple-tinged).

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

1–2(–5+) in cymiform arrays.

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

pappi 3–4 mm.

1.5–2.5 mm, hirtellous on ribs;

pappi 6–7 mm.

= 46.

= 46.