Flora of North America species comparison

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

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

petiolate;

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

(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).

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

gradually reduced (± petiolate or sessile).

usually bracteate, sometimes ebracteate, glabrous.

bracteate, glabrous or sparsely tomentose.

0, 8, or 13;

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

8–10(–13);

corolla laminae 5–8+ mm.

50–65+;

corolla tubes 2–3 mm, limbs 2–3 mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

13 or 21, green, 5–8+ mm, glabrous.

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

inconspicuous.

inconspicuous.

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

4–15+ in corymbiform arrays.

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

pappi 3.5–4.5 mm.

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

pappi 5–6 mm.

= 44, 46, 92.

= 46.