Flora of North America species comparison

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

1, glabrous or sparsely tomentose.

petiolate;

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

(and proximal cauline) petiolate;

blades ovate, oblanceolate, or spatulate, 10–30 × 5–20 mm, bases tapering, sometimes obtuse, margins entire, subentire, or dentate.

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

abruptly reduced (sessile, clasping; bractlike, entire).

bracteate, distally tomentose.

bracteate (bractlets red-tinged), densely lanate-tomentose.

8 or 13;

corolla laminae 5–7+ mm.

(8–)13;

corolla laminae 6–10+ mm.

45–60+;

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

35–50+;

corolla tubes 2.5–3.5 mm, limbs 3–4 mm.

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

(13–)21, green (tips red or dark red), densely tomentose proximally.

inconspicuous.

conspicuous (bractlets narrow, red-tinged).

20–70(–100+) in corymbiform arrays.

1–4+ in corymbiform arrays.

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.

1.5–2 mm, glabrous;

pappi 5–6 mm.

= 44.

= 46.