Flora of North America species comparison

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

1 or 2–5 (often scapiform), loosely 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 obovate to ovate or sublyrate, 30–60+ × 10–40+ mm, bases tapering, margins deeply dissected or pinnatifid, ultimate margins crenate to crenate-dentate.

gradually reduced (sessile, clasping; pinnatisect or sublyrate).

abruptly reduced or 0 (sessile; ovate to obovate, dissected or pinnatifid).

bracteate, glabrous or proximally tomentose.

inconspicuously bracteate or ebracteate, glabrous.

8–13(–21);

corolla laminae 7–10 mm.

5 or 8;

corolla laminae 5–10 mm.

40–50+;

corolla tubes 2–3 mm, limbs 2–3 mm.

20–30+;

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

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

(8–)13, light green (tips yellowish), 4–7 mm, glabrous.

conspicuous.

0 or inconspicuous.

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

4–10+ in subumbelliform cymiform arrays.

1–1.5 mm, glabrous or hirsute on ribs;

pappi 3–6 mm.

1–1.5 mm, glabrous;

pappi 4–4.5 mm.

= 44, 88, 90.

= 40.