Flora of North America species comparison

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

usually 1 or 2–5, rarely 6–20, clustered, glabrous but for tomentose leaf axils.

(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.

petiolate;

blades elliptic-ovate, broadly oblanceolate, or lyrate (lateral lobes 3–9 pairs), 40–70 × 15–25 mm, bases tapering, margins irregularly and deeply parted or lobed (apices incised).

gradually reduced (weakly clasping, similar to basal).

usually gradually, sometimes abruptly, reduced (petiolate or sessile; narrowly elliptic to oblanceolate, pinnatifid).

bracteate, glabrous or bases tomentose.

ebracteate or bracteate, glabrous.

(8–)13;

corolla laminae 7–9 mm.

(10–)13;

corolla laminae 5–7+ mm.

35–50+;

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

60–75+;

corolla tubes 2–3 mm, limbs 2–3 mm.

(13–)21, green, 5–7 mm, glabrous.

13 or 21, light green, 4–6+ mm, glabrous.

conspicuous (bractlets 2.5–4 mm).

usually 0, sometimes inconspicuous.

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

3–20+ in open or congested, corymbiform arrays, frequently subtended by smaller arrays from leaf axils.

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

pappi 3–4 mm.

1–1.5 mm, hirsute on ribs;

pappi 3–5 mm.

= 46.

= 36.