Flora of North America species comparison

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

1 or 2–3, clustered, glabrous or leaf axils sparsely hairy.

(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.

(and proximal cauline) petiolate;

blades narrowly ovate to ovate (2–3 times pinnately dissected, ultimate lobes mostly linear to filiform), 50–80 × 30–50 mm, bases ± truncate or auriculate, ultimate margins entire or remotely dentate.

gradually reduced (weakly clasping, similar to basal).

gradually reduced (petiolate or sessile, similar to basals).

bracteate, glabrous or bases tomentose.

bracteate or ebracteate, glabrous.

(8–)13;

corolla laminae 7–9 mm.

8–10(–13);

corolla laminae 8–12 mm.

35–50+;

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

35–50+;

corolla tubes 2–3 mm, limbs 1.5–2.5 mm.

(13–)21, green, 5–7 mm, glabrous.

(13–)21, green, 4–6 mm, glabrous (tips sometimes hair-tufted).

conspicuous (bractlets 2.5–4 mm).

0.

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

10–30+ in open, corymbiform arrays.

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

pappi 3–4 mm.

0.75–1.5 mm, hairy on ribs;

pappi 3–4 mm.

= 46.