Flora of North America species comparison

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

1 or 2–3+, clustered, glabrous or leaf axils tomentose.

(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.

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 (sessile).

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

conspicuously bracteate, glabrous or tomentose.

bracteate, glabrous or sparsely tomentose.

8–13;

corolla laminae 7–10 mm.

(8–)10–13;

corolla laminae 8–10+ mm.

40–50+;

corolla tubes 4–5 mm, limbs 3–4 mm.

55–70+;

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

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

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

conspicuous.

inconspicuous.

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

6–20+ in corymbiform to subumbelliform arrays.

2–3 mm, glabrous or hirtellous on ribs;

pappi 5–6 mm.

1–1.5 mm, glabrous;

pappi 4.5–5.5 mm.

= 46, 92.

= 44.