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, loosely clustered, glabrous.

(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 ± orbiculate to oblong, or lyrate (lateral lobes 1–3 pairs, sinuses usually rounded, midribs usually winged), 50–120+ × 30–70+ mm, bases cordate to subcordate, margins shallowly to deeply incised.

gradually reduced (weakly clasping, similar to basal).

gradually reduced (petiolate or sessile and clasping; lanceolate, incised).

bracteate, glabrous or bases tomentose.

ebracteate or inconspicuously bracteate, glabrous.

(8–)13;

corolla laminae 7–9 mm.

8 or 13;

corolla laminae 10–15+ mm.

35–50+;

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

30–45+;

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

(13–)21, green, 5–7 mm, glabrous.

(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally.

conspicuous (bractlets 2.5–4 mm).

conspicuous.

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

8–15+ in corymbiform or subumbelliform arrays.

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

pappi 3–4 mm.

2.5–3.5 mm, glabrous;

pappi 5–7 mm.

= 46.

= 46.