Flora of North America species comparison

1, glabrous or leaf axils sparsely tomentose.

usually 1, sometimes 2, densely tomentose (at least proximally), becoming glabrate distally.

(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).

(relatively leathery) sessile;

blades linear, 10–15+ × 1–2 mm, margins entire (revolute).

gradually reduced (± sessile; lacerate to subcrenate).

abruptly reduced (linear, bractlike).

bracteate, glabrous.

bracteate, tomentose or glabrate.

8–13;

corolla laminae 4–7 mm.

0 or 5–8;

corolla laminae 4–7 mm.

50–70+;

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

30–40+;

corolla tubes 2.5–3.5 mm, limbs 3.5–4 mm.

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

13, purple to deep reddish purple, 6–9+ mm, hairy or glabrescent.

conspicuous.

conspicuous.

8–20+ in loose, corymbiform arrays.

1(–2).

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

3–3.5 mm, hirtellous;

pappi 5–6 mm.

= 44.