Flora of North America species comparison

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

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

(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).

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

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

bracteate, glabrous or sparsely tomentose.

bracteate, distally tomentose.

8 or 13;

corolla laminae 5–10 mm.

8 or 13;

corolla laminae 5–7+ mm.

35–60+;

corolla tubes 2–4 mm, limbs 2.5–4 mm.

45–60+;

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

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

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

conspicuous.

inconspicuous.

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

20–70(–100+) in corymbiform arrays.

1–2.5 mm, glabrous;

pappi 3–6 mm.

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.

= 46, 92.

= 44.