Flora of North America species comparison

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

usually 1 (sometimes more, clustered), glaucous.

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 to narrowly oblanceolate, 30–100+ × 10–20+ mm, bases tapering, margins entire or subentire.

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

gradually reduced (sessile and weakly clasping; lanceolate, entire).

usually bracteate, sometimes ebracteate, glabrous.

conspicuously bracteate, glaucous.

0, 8, or 13;

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

8–10(–13);

corolla laminae 5–7 mm.

50–65+;

corolla tubes 2–3 mm, limbs 2–3 mm.

25–40+;

corolla tubes 2–3 mm, limbs 3–4 mm.

13 or 21, green, 5–8+ mm, glabrous.

(13) 21, green (tips often purple), glabrous.

inconspicuous.

conspicuous.

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

12–20+ in open, corymbiform arrays.

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

pappi 3.5–4.5 mm.

1–1.5 mm, glabrous;

pappi 5–6 mm.

= 44, 46, 92.

= 46.