Flora of North America species comparison

1, glabrous or leaf axils tomentose.

1 or 2–6+, clustered (bases cyanic), glabrous or leaf axils sparsely tomentose.

(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).

(and proximal cauline) petiolate;

blades oblanceolate to spatulate (usually pinnately lobed, lateral lobes 1–6+ pairs, their bases petioluliform, terminal lobes usually larger than laterals, often reniform to ± orbiculate, midribs sometimes ± winged and/or toothed between the primary lobes), 40–120+ × 10–30+ mm, bases ± cuneate, ultimate margins subentire or irregularly crenate, dentate, or lobed.

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

gradually reduced (± petiolate or sessile, clasping; often auriculate, pinnately dissected to pinnately lobed).

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

bracteate, glabrous.

8–10+;

corolla laminae 10–15+ mm.

8 or 13;

corolla laminae 3–7 mm.

45–60+;

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

30–45(–100+);

corolla tubes 1.5–2.5 mm, limbs (1.5–)2.5–3.5 mm.

13 or 21, green, 7–9+ mm, glabrous.

13 or 21, green (tips sometimes reddish), 3–7 mm, glabrous.

inconspicuous.

inconspicuous or 0.

15–50+ in corymbiform arrays.

4–25+ in corymbiform arrays.

2–2.5 mm, glabrous;

pappi 6–7 mm.

1–1.5 mm, hirtellous on ribs;

pappi 3–5 mm.

= 46.

= 46.