Flora of North America species comparison

1, glabrous or leaf axils tomentose.

1, glabrous.

(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).

petiolate;

blades orbiculate-ovate, orbiculate, obovate, or subreniform, 30–80+ × 30–80+ mm, bases cordate to contracted, margins crenate, dentate, or wavy.

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

abruptly reduced (proximal petiolate or sessile and clasping, broadly lanceolate, irregularly incised or crenate; mid ones sessile, clasping, sometimes auriculate, oblong to hastate, irregularly dentate; distal bractlike, entire).

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

conspicuously bracteate, glabrous.

8–10+;

corolla laminae 10–15+ mm.

usually 8+, rarely 0;

corolla laminae 8–11 mm.

45–60+;

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

30–45+;

corolla tubes 4–5 mm, limbs 6–7 mm.

13 or 21, green, 7–9+ mm, glabrous.

13, light green, 5–9+ mm, glabrous.

inconspicuous.

conspicuous.

15–50+ in corymbiform arrays.

3–8 in open, cymiform arrays.

2–2.5 mm, glabrous;

pappi 6–7 mm.

1.5–2 mm, glabrous;

pappi 9–10 mm.

= 46.