Flora of North America species comparison

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

1 or 2–4, clustered, bases sparsely floccose-tomentose or glabrous, leaf axils 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, turgid) petiolate;

blades elliptic to ovate or subreniform, 20–40+ × 15–30+ mm, bases cuneate to subcordate, margins subentire or crenate to crenate-dentate.

gradually reduced (weakly clasping, similar to basal).

gradually reduced (sessile; pinnately lobed, sinuses deep, rounded, ultimate margins entire or subentire).

bracteate, glabrous or bases tomentose.

ebracteate (or bractlets short), glabrous or sparsely hairy.

(8–)13;

corolla laminae 7–9 mm.

0.

35–50+;

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

45–65+;

corolla tubes 3–4 mm, limbs 2–3 mm.

(13–)21, green, 5–7 mm, glabrous.

13 or 21, green (tips cyanic), 6–8+ mm, glabrous.

conspicuous (bractlets 2.5–4 mm).

inconspicuous.

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

6–20 in open or compact, corymbiform arrays.

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

pappi 3–4 mm.

1–2 mm, glabrous;

pappi 4.5–5.5 mm.

= 46.

= 46.