Flora of North America species comparison

1, glabrous or leaf axils tomentose.

1 or 2–4, clustered, bases sparsely floccose-tomentose or glabrous, leaf axils 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, turgid) petiolate;

blades elliptic to ovate or subreniform, 20–40+ × 15–30+ mm, bases cuneate to subcordate, margins subentire or crenate to crenate-dentate.

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

gradually reduced (sessile; pinnately lobed, sinuses deep, rounded, ultimate margins entire or subentire).

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

ebracteate (or bractlets short), glabrous or sparsely hairy.

8–10+;

corolla laminae 10–15+ mm.

0.

45–60+;

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

45–65+;

corolla tubes 3–4 mm, limbs 2–3 mm.

13 or 21, green, 7–9+ mm, glabrous.

13 or 21, green (tips cyanic), 6–8+ mm, glabrous.

inconspicuous.

inconspicuous.

15–50+ in corymbiform arrays.

6–20 in open or compact, corymbiform arrays.

2–2.5 mm, glabrous;

pappi 6–7 mm.

1–2 mm, glabrous;

pappi 4.5–5.5 mm.

= 46.

= 46.