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 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.

petiolate;

blades cordate to reniform, 20–60 × 20–60 mm, bases abruptly contracted or ± cordate, margins crenate to crenate-serrate (apices rounded, faces glabrous).

gradually reduced (weakly clasping, similar to basal).

gradually reduced (petiolate or sessile, not clasping; blades oblong to lyrate, lateral lobes 2–4 pairs).

bracteate, glabrous or bases tomentose.

bracteate, glabrous or sparsely tomentose.

(8–)13;

corolla laminae 7–9 mm.

(8–)10–13;

corolla laminae 8–10+ mm.

35–50+;

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

55–70+;

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

(13–)21, green, 5–7 mm, glabrous.

13–21, green (tips purple or black), 6–8 mm, glabrous or sparsely tomentose proximally.

conspicuous (bractlets 2.5–4 mm).

inconspicuous.

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

6–20+ in corymbiform to subumbelliform arrays.

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

pappi 3–4 mm.

1–1.5 mm, glabrous;

pappi 4.5–5.5 mm.

= 46.

= 44.