Flora of North America species comparison

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

1 or 2–5+, loosely clustered, glabrous or leaf axils sparsely tomentose.

(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 lanceolate (pinnatifid, lateral lobes 6+ pairs, their bases petioluliform, terminal lobes smaller than laterals), 60–100 × 10–20 mm, bases tapering, ultimate margins dentate.

gradually reduced (weakly clasping, similar to basal).

gradually reduced (sessile).

bracteate, glabrous or bases tomentose.

bracteate or ebracteate, glabrous.

(8–)13;

corolla laminae 7–9 mm.

(8–)13;

corolla laminae 8–10+ mm.

35–50+;

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

40–55+;

corolla tubes 2–3 mm, limbs 2–3 mm.

(13–)21, green, 5–7 mm, glabrous.

(13–)21, green (tips yellow), 4–6+ mm, glabrous.

conspicuous (bractlets 2.5–4 mm).

inconspicuous.

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

6–20+ in corymbiform arrays.

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

pappi 3–4 mm.

1–1.5 mm, hirtellous on ribs;

pappi 3.5–4.5 mm.

= 46.