Flora of North America species comparison

1 or 2–5, clustered, usually glabrous, sometimes sparsely floccose-tomentose proximally and in leaf axils.

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

(and proximal cauline, relatively thick and turgid) petiolate;

blades spatulate to oblanceolate, or ovate to orbiculate, 20–40+ × 10–30+ mm, bases tapering to abruptly contracted or subcordate, margins entire, crenate, dentate, or weakly lobulate (faces usually glabrous, sometimes hairy).

(relatively leathery) sessile;

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

gradually to abruptly reduced (± petiolate or sessile; entire or subentire).

abruptly reduced (linear, bractlike).

bracteate, glabrous or sparsely tomentose.

bracteate, tomentose or glabrate.

8 or 13;

corolla laminae 5–10 mm.

0 or 5–8;

corolla laminae 4–7 mm.

35–60+;

corolla tubes 2–4 mm, limbs 2.5–4 mm.

30–40+;

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

(8–)13 or 21, green (tips sometimes cyanic), 4–7+ mm, glabrous.

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

conspicuous.

conspicuous.

2–20+ in loose, corymbiform or subumbelliform arrays.

1(–2).

1–2.5 mm, glabrous;

pappi 3–6 mm.

3–3.5 mm, hirtellous;

pappi 5–6 mm.

= 46, 92.