Flora of North America species comparison

1 or multiple, loosely clustered, usually glabrous, sometimes tomentose proximally and in leaf axils.

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

(and proximal cauline) petiolate;

blades orbiculate, ovate, or obovate, 40–100+ × 20–80+ mm, bases tapering, rounded, or abruptly contracted, margins crenate, dentate, or serrate.

(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, clasping; pinnatisect or sublyrate).

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

bracteate, glabrous or proximally tomentose.

bracteate or ebracteate, glabrous.

8–13(–21);

corolla laminae 7–10 mm.

8–10(–13);

corolla laminae 8–12 mm.

40–50+;

corolla tubes 2–3 mm, limbs 2–3 mm.

35–50+;

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

13 or 21, green (tips sometimes reddish), 3–6 mm, glabrous or floccose-tomentose proximally.

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

conspicuous.

0.

6–15+ in open or congested, corymbiform arrays.

10–30+ in open, corymbiform arrays.

1–1.5 mm, glabrous or hirsute on ribs;

pappi 3–6 mm.

0.75–1.5 mm, hairy on ribs;

pappi 3–4 mm.

= 44, 88, 90.