Flora of North America species comparison

1, glabrous or leaf axils tomentose.

usually 1 (sometimes more, clustered), glaucous.

(and proximal cauline) petiolate;

blades spatulate to obovate (pinnately lobed, terminal lobes ovate to oblong, lateral lobes 2–6+ pairs, smaller, midribs narrowly winged), 100–300+ × 20–50(–80+) mm, bases contracted to tapering, ultimate margins crenate or dentate to lacerate (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; obovate, irregularly incised to subpinnate, terminal lobes narrow).

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

usually ebracteate (rarely with 1–2 bractlets), glabrous.

conspicuously bracteate, glaucous.

8–10+;

corolla laminae 10–15+ mm.

8–10(–13);

corolla laminae 5–7 mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–4.5 mm.

25–40+;

corolla tubes 2–3 mm, limbs 3–4 mm.

13 or 21, green, 7–9+ mm, glabrous.

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

inconspicuous.

conspicuous.

15–50+ in corymbiform arrays.

12–20+ in open, corymbiform arrays.

2–2.5 mm, glabrous;

pappi 6–7 mm.

1–1.5 mm, glabrous;

pappi 5–6 mm.

= 46.

= 46.