Flora of North America species comparison

1 or 2–6+, clustered (bases cyanic), glabrous or leaf axils sparsely tomentose.

1 (striated, frequently hollow, often pink- to purple-tinged), glabrous or leaf axils sparsely tomentose.

(and proximal cauline) petiolate;

blades oblanceolate to spatulate (usually pinnately lobed, lateral lobes 1–6+ pairs, their bases petioluliform, terminal lobes usually larger than laterals, often reniform to ± orbiculate, midribs sometimes ± winged and/or toothed between the primary lobes), 40–120+ × 10–30+ mm, bases ± cuneate, ultimate margins subentire or irregularly crenate, dentate, or lobed.

(and proximal cauline) obscurely petiolate;

blades obovate to oblanceolate, sometimes lyrate (lateral lobes to 5 pairs, terminal lobes larger than laterals), 50–150+ × 10–30+ mm, bases tapering, ultimate margins crenate to irregularly undulate.

gradually reduced (± petiolate or sessile, clasping; often auriculate, pinnately dissected to pinnately lobed).

gradually reduced (weakly clasping, similar to basal).

bracteate, glabrous.

bracteate, glabrous or bases tomentose.

8 or 13;

corolla laminae 3–7 mm.

(8–)13;

corolla laminae 7–9 mm.

30–45(–100+);

corolla tubes 1.5–2.5 mm, limbs (1.5–)2.5–3.5 mm.

35–50+;

corolla tubes 2.5–3.5 mm, limbs 2–3 mm.

13 or 21, green (tips sometimes reddish), 3–7 mm, glabrous.

(13–)21, green, 5–7 mm, glabrous.

inconspicuous or 0.

conspicuous (bractlets 2.5–4 mm).

4–25+ in corymbiform arrays.

8–30+ in umbelliform or cymiform arrays (robust plants with multiple arrays).

1–1.5 mm, hirtellous on ribs;

pappi 3–5 mm.

1–1.5 mm, sparsely hirtellous on ribs or glabrous;

pappi 3–4 mm.

= 46.

= 46.