Flora of North America species comparison

1, glabrous or leaf axils sparsely tomentose.

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

(and proximal cauline) petiolate;

blades narrowly ovate to oblong-lanceolate, 30–70+ × 10–20+ mm, bases abruptly contracted to subcordate, margins usually serrate-dentate, sometimes subcrenate (apices acute).

petiolate;

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

gradually reduced (± sessile; lacerate to subcrenate).

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

bracteate, glabrous.

usually bracteate, sometimes ebracteate, glabrous.

8–13;

corolla laminae 4–7 mm.

0, 8, or 13;

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

50–70+;

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

50–65+;

corolla tubes 2–3 mm, limbs 2–3 mm.

13 or 21, light green (tips sometimes black), 5–8 mm, glabrous.

13 or 21, green, 5–8+ mm, glabrous.

conspicuous.

inconspicuous.

8–20+ in loose, corymbiform arrays.

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

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

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

pappi 3.5–4.5 mm.

= 44.

= 44, 46, 92.