Flora of North America species comparison

1, glabrous or leaf axils sparsely tomentose.

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

(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).

(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).

gradually reduced (± sessile; lacerate to subcrenate).

gradually reduced (± petiolate or sessile).

bracteate, glabrous.

bracteate, glabrous or sparsely tomentose.

8–13;

corolla laminae 4–7 mm.

8–10(–13);

corolla laminae 5–8+ mm.

50–70+;

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

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

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

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

conspicuous.

inconspicuous.

8–20+ in loose, corymbiform arrays.

4–15+ in corymbiform arrays.

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

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

pappi 5–6 mm.

= 44.

= 46.