Flora of North America species comparison

1, glabrous or leaf axils sparsely tomentose.

1 or 2–3, clustered, glabrous or leaf axils sparsely hairy.

(and proximal cauline) petiolate;

blades narrowly ovate to oblong-lanceolate, 30–70+ × 10–20+ mm, bases abruptly contracted to subcordate, margins usually serrate-dentate, sometimes subcrenate (apices acute).

(and proximal cauline) petiolate;

blades narrowly ovate to ovate (2–3 times pinnately dissected, ultimate lobes mostly linear to filiform), 50–80 × 30–50 mm, bases ± truncate or auriculate, ultimate margins entire or remotely dentate.

gradually reduced (± sessile; lacerate to subcrenate).

gradually reduced (petiolate or sessile, similar to basals).

bracteate, glabrous.

bracteate or ebracteate, glabrous.

8–13;

corolla laminae 4–7 mm.

8–10(–13);

corolla laminae 8–12 mm.

50–70+;

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

35–50+;

corolla tubes 2–3 mm, limbs 1.5–2.5 mm.

13 or 21, light green (tips sometimes black), 5–8 mm, glabrous.

(13–)21, green, 4–6 mm, glabrous (tips sometimes hair-tufted).

conspicuous.

0.

8–20+ in loose, corymbiform arrays.

10–30+ in open, corymbiform arrays.

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

0.75–1.5 mm, hairy on ribs;

pappi 3–4 mm.

= 44.