Flora of North America species comparison

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

1 (often branched proximally, sometimes distally), sparsely to densely floccose-tomentose.

(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.

petiolate;

blades elliptic to oblanceolate or ovate, 20–80+ × 20–60+ mm, bases tapering, margins entire, crenate-serrate, or irregularly to pinnately lobed (abaxial faces white-tomentose, adaxials patchy tomentose to glabrate).

gradually reduced (weakly clasping, similar to basal).

gradually to abruptly reduced (sessile; mids lanceolate to oblanceolate, irregularly serrate to pinnately lobed, distals bractlike).

bracteate, glabrous or bases tomentose.

bracteate, ± tomentose.

(8–)13;

corolla laminae 7–9 mm.

10–13+;

corolla laminae 8–12+ mm.

35–50+;

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

60–70+;

corolla tubes 1–1.5 mm, limbs 2–2.5 mm.

(13–)21, green, 5–7 mm, glabrous.

13 or 21, green (sometimes with purple streaks, tips usually purple), 4–8 mm, proximally tomentose, rarely glabrous.

conspicuous (bractlets 2.5–4 mm).

conspicuous (bractlets purple-tinged).

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

1(–3).

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

pappi 3–4 mm.

1–1.5 mm, glabrous;

pappi 2.5–3 mm.

= 46.

= 92.