Flora of North America species comparison

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

1, glabrous or sparsely 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) petiolate;

blades ovate, oblanceolate, or spatulate, 10–30 × 5–20 mm, bases tapering, sometimes obtuse, margins entire, subentire, or dentate.

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

abruptly reduced (sessile, clasping; bractlike, entire).

usually bracteate, sometimes ebracteate, glabrous.

bracteate (bractlets red-tinged), densely lanate-tomentose.

0, 8, or 13;

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

(8–)13;

corolla laminae 6–10+ mm.

50–65+;

corolla tubes 2–3 mm, limbs 2–3 mm.

35–50+;

corolla tubes 2.5–3.5 mm, limbs 3–4 mm.

13 or 21, green, 5–8+ mm, glabrous.

(13–)21, green (tips red or dark red), densely tomentose proximally.

inconspicuous.

conspicuous (bractlets narrow, red-tinged).

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

1–4+ in corymbiform arrays.

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

pappi 3.5–4.5 mm.

1.5–2 mm, glabrous;

pappi 5–6 mm.

= 44, 46, 92.

= 46.