Flora of North America species comparison

1, glabrous or leaf axils tomentose.

1 or 3–5, clustered (often scapiform), usually floccose, lanate-tomentose, or canescent, sometimes glabrate.

(and proximal cauline) petiolate;

blades spatulate to obovate (pinnately lobed, terminal lobes ovate to oblong, lateral lobes 2–6+ pairs, smaller, midribs narrowly winged), 100–300+ × 20–50(–80+) mm, bases contracted to tapering, ultimate margins crenate or dentate to lacerate (faces glabrous).

(either of two forms): usually (1) sessile, sometimes petiolate;

blades narrowly lanceolate to elliptic, 15–40+ × 5–25 mm, bases tapering, margins entire or dentate toward apices (often revolute), sometimes (2) petiolate;

blades ovate to orbiculate, 10–20 × 5–15 mm, bases tapering to abruptly contracted, margins entire or wavy, sometimes dentate toward apices.

gradually reduced (petiolate or sessile; obovate, irregularly incised to subpinnate, terminal lobes narrow).

abruptly reduced (bractlike).

usually ebracteate (rarely with 1–2 bractlets), glabrous.

inconspicuously bracteate, glabrous or densely hairy.

8–10+;

corolla laminae 10–15+ mm.

0, 8, or 13;

corolla laminae 5–10 mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–4.5 mm.

30–50+;

corolla tubes 2.5–3.5 mm, limbs 3–4 mm.

13 or 21, green, 7–9+ mm, glabrous.

13 or 21, green (tips sometimes cyanic), 4–10 mm, glabrous or hairy.

inconspicuous.

conspicuous (bractlets often cyanic).

15–50+ in corymbiform arrays.

1–5(–8) in cymiform to subumbelliform arrays.

2–2.5 mm, glabrous;

pappi 6–7 mm.

1.5–2 mm, glabrous;

pappi 5–6 mm.

= 46.

= 44, 46.