Flora of North America species comparison

1 or 2–3, loosely clustered, glabrous.

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

(and proximal cauline) petiolate;

blades ± orbiculate to oblong, or lyrate (lateral lobes 1–3 pairs, sinuses usually rounded, midribs usually winged), 50–120+ × 30–70+ mm, bases cordate to subcordate, margins shallowly to deeply incised.

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 (petiolate or sessile and clasping; lanceolate, incised).

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

ebracteate or inconspicuously bracteate, glabrous.

bracteate, glabrous or sparsely tomentose.

8 or 13;

corolla laminae 10–15+ mm.

(8–)10–13;

corolla laminae 8–10+ mm.

30–45+;

corolla tubes 3–4 mm, limbs 3.5–4.5 mm.

55–70+;

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

(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally.

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

conspicuous.

inconspicuous.

8–15+ in corymbiform or subumbelliform arrays.

6–20+ in corymbiform to subumbelliform arrays.

2.5–3.5 mm, glabrous;

pappi 5–7 mm.

1–1.5 mm, glabrous;

pappi 4.5–5.5 mm.

= 46.

= 44.