Flora of North America species comparison

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

1 or 2–5, loosely clustered, bases densely tomentose, leaf axils usually 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).

petiolate;

blades narrowly elliptic to oblanceolate, 30–90+ × 10–20+ mm, bases tapering, margins serrate to crenate-serrate (apices rounded to acute, faces glabrous).

gradually reduced (± petiolate or sessile).

gradually reduced (petiolate or sessile; elliptic to lanceolate, often pinnatifid).

bracteate, glabrous or sparsely tomentose.

bracteate, distally tomentose.

8–10(–13);

corolla laminae 5–8+ mm.

8 or 13;

corolla laminae 5–7+ mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

45–60+;

corolla tubes 1.5–2 mm, limbs 1.5–2 mm.

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

13 or 21, light green, 3–5 mm, glabrous.

inconspicuous.

inconspicuous.

4–15+ in corymbiform arrays.

20–70(–100+) in corymbiform arrays.

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

pappi 5–6 mm.

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.

= 46.

= 44.