Flora of North America species comparison

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

1 or 2–5, loosely clustered, usually glabrous or glabrescent, sometimes sparsely tomentose throughout, axils (basal leaves) tomentose.

(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, oblanceolate, spatulate, or lyrate to sublyrate (± pinnately lobed, lateral lobes 3–6 pairs, smaller than terminal lobes), 40–80+ × 10–30+ mm, bases tapering, ultimate margins incised to dentate.

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

gradually reduced (sessile).

bracteate, glabrous or proximally tomentose.

conspicuously bracteate, glabrous or tomentose.

8–13(–21);

corolla laminae 7–10 mm.

8–13;

corolla laminae 7–10 mm.

40–50+;

corolla tubes 2–3 mm, limbs 2–3 mm.

40–50+;

corolla tubes 4–5 mm, limbs 3–4 mm.

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

13–21, green (tips often yellow), 4–9+ mm, glabrous or sparsely tomentose (at least proximally).

conspicuous.

conspicuous.

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

10–30+ in open, corymbiform or subumbelliform arrays.

1–1.5 mm, glabrous or hirsute on ribs;

pappi 3–6 mm.

2–3 mm, glabrous or hirtellous on ribs;

pappi 5–6 mm.

= 44, 88, 90.

= 46, 92.