Flora of North America species comparison

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

1 or 2–4, clustered, bases sparsely floccose-tomentose or glabrous, leaf axils tomentose.

(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).

(and proximal cauline, turgid) petiolate;

blades elliptic to ovate or subreniform, 20–40+ × 15–30+ mm, bases cuneate to subcordate, margins subentire or crenate to crenate-dentate.

gradually reduced (± petiolate or sessile).

gradually reduced (sessile; pinnately lobed, sinuses deep, rounded, ultimate margins entire or subentire).

bracteate, glabrous or sparsely tomentose.

ebracteate (or bractlets short), glabrous or sparsely hairy.

8–10(–13);

corolla laminae 5–8+ mm.

0.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

45–65+;

corolla tubes 3–4 mm, limbs 2–3 mm.

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

13 or 21, green (tips cyanic), 6–8+ mm, glabrous.

inconspicuous.

inconspicuous.

4–15+ in corymbiform arrays.

6–20 in open or compact, corymbiform arrays.

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

pappi 5–6 mm.

1–2 mm, glabrous;

pappi 4.5–5.5 mm.

= 46.

= 46.