Flora of North America species comparison

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

usually 1 (sometimes more, clustered), glaucous.

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, relatively thick and turgid) petiolate;

blades lanceolate to narrowly oblanceolate, 30–100+ × 10–20+ mm, bases tapering, margins entire or subentire.

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

gradually reduced (sessile and weakly clasping; lanceolate, entire).

bracteate, distally tomentose.

conspicuously bracteate, glaucous.

8 or 13;

corolla laminae 5–7+ mm.

8–10(–13);

corolla laminae 5–7 mm.

45–60+;

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

25–40+;

corolla tubes 2–3 mm, limbs 3–4 mm.

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

(13) 21, green (tips often purple), glabrous.

inconspicuous.

conspicuous.

20–70(–100+) in corymbiform arrays.

12–20+ in open, corymbiform arrays.

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.

1–1.5 mm, glabrous;

pappi 5–6 mm.

= 44.

= 46.