Flora of North America species comparison

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

1 (sometimes from rosettes, rosettes sometimes clustered), tomentose.

petiolate;

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

petiolate;

blades broadly lanceolate to elliptic or spatulate, 20–40+ × 10–20+ mm, bases tapering, margins entire or subentire to dentate distally (faces tomentose).

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

abruptly reduced (petiolate or sessile; narrowly lanceolate to sublyrate, sharply toothed to pinnatisect or entire).

usually bracteate, sometimes ebracteate, glabrous.

bracteate, densely lanate to sparsely tomentose.

0, 8, or 13;

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

8–10(–13);

corolla laminae 5–10 mm.

50–65+;

corolla tubes 2–3 mm, limbs 2–3 mm.

25–35+;

corolla tubes 3–4 mm, limbs 1.5–2 mm.

13 or 21, green, 5–8+ mm, glabrous.

13 or 21, green, 5–7 mm, densely tomentose (apices scarious).

inconspicuous.

inconspicuous.

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

6–12+ in corymbiform arrays (lateral cymiform arrays sometimes originating in leaf axils).

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

pappi 3.5–4.5 mm.

1–1.5 mm, hirtellous on ribs;

pappi 4–5 mm.

= 44, 46, 92.

= 46.