Flora of North America species comparison

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

1, sparsely to densely tomentose or 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.

(and proximal) petiolate;

blades lanceolate to oblanceolate, 30–50+ × 10–20 mm, bases tapering, margins entire or shallowly toothed (slightly revolute).

gradually reduced (weakly clasping, similar to basal).

gradually reduced (distal sessile, bractlike).

bracteate, glabrous or bases tomentose.

inconspicuously bracteate or ebracteate, sparsely tomentose to glabrate.

(8–)13;

corolla laminae 7–9 mm.

8(–13);

corolla laminae 8–10+ mm.

35–50+;

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

30–40+;

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

(13–)21, green, 5–7 mm, glabrous.

13 or 21, green, 5–7+ mm, glabrous.

conspicuous (bractlets 2.5–4 mm).

0 or inconspicuous.

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

6–15+ in corymbiform arrays.

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

pappi 3–4 mm.

1.5–2 mm, glabrous;

pappi 4–5 mm.

= 46.

= 46, 92.