Flora of North America species comparison

1 or 2–3, loosely clustered, glabrous.

1 or 2–4, loosely clustered, glabrous or sparsely tomentose proximally.

(and proximal cauline) petiolate;

blades ± orbiculate to oblong, or lyrate (lateral lobes 1–3 pairs, sinuses usually rounded, midribs usually winged), 50–120+ × 30–70+ mm, bases cordate to subcordate, margins shallowly to deeply incised.

petiolate;

blades lanceolate to narrowly elliptic or oblanceolate, 30–60+ × 10–20+ mm, bases tapering, sometimes obtuse, margins subentire to dentate or serrate.

gradually reduced (petiolate or sessile and clasping; lanceolate, incised).

gradually reduced (proximals petiolate, sublyrate; mids sessile, not clasping, lanceolate, dissected, incised, or lacerate; distals sessile, bractlike).

ebracteate or inconspicuously bracteate, glabrous.

usually bracteate, sometimes ebracteate, glabrous.

8 or 13;

corolla laminae 10–15+ mm.

0, 8, or 13;

corolla laminae (pale yellow) 5–10+ mm.

30–45+;

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

50–65+;

corolla tubes 2–3 mm, limbs 2–3 mm.

(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally.

13 or 21, green, 5–8+ mm, glabrous.

conspicuous.

inconspicuous.

8–15+ in corymbiform or subumbelliform arrays.

2–10+ in loose or compact, corymbiform arrays.

2.5–3.5 mm, glabrous;

pappi 5–7 mm.

1–2 mm, usually glabrous, sometimes hispidulous on ribs;

pappi 3.5–4.5 mm.

= 46.

= 44, 46, 92.