Flora of North America species comparison

1 or multiple, clustered, usually glabrous, rarely sparsely floccose-tomentose, leaf axils sometimes tomentose.

1 or 2–3, loosely clustered, glabrous.

(and proximal cauline, relatively thick and turgid) petiolate;

blades lanceolate or narrowly oblanceolate, 20–40+ × 5–15 mm, bases tapering, margins usually entire, sometimes sub-pinnatisect (apices subentire or dentate).

(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.

gradually reduced (± petiolate or sessile).

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

bracteate, glabrous or sparsely tomentose.

ebracteate or inconspicuously bracteate, glabrous.

8–10(–13);

corolla laminae 5–8+ mm.

8 or 13;

corolla laminae 10–15+ mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

30–45+;

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

13 or 21, green, 6–10 mm, sparsely tomentose proximally, glabrous distally.

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

inconspicuous.

conspicuous.

4–15+ in corymbiform arrays.

8–15+ in corymbiform or subumbelliform arrays.

1.5–2.5 mm, glabrous or sparsely hirtellous on ribs;

pappi 5–6 mm.

2.5–3.5 mm, glabrous;

pappi 5–7 mm.

= 46.

= 46.