Flora of North America species comparison

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

1 or 2–4, clustered, bases sparsely floccose-tomentose or glabrous, leaf axils 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, turgid) petiolate;

blades elliptic to ovate or subreniform, 20–40+ × 15–30+ mm, bases cuneate to subcordate, margins subentire or crenate to crenate-dentate.

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

gradually reduced (sessile; pinnately lobed, sinuses deep, rounded, ultimate margins entire or subentire).

bracteate, glabrous or proximally tomentose.

ebracteate (or bractlets short), glabrous or sparsely hairy.

8–13(–21);

corolla laminae 7–10 mm.

0.

40–50+;

corolla tubes 2–3 mm, limbs 2–3 mm.

45–65+;

corolla tubes 3–4 mm, limbs 2–3 mm.

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

13 or 21, green (tips cyanic), 6–8+ mm, glabrous.

conspicuous.

inconspicuous.

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

6–20 in open or compact, corymbiform arrays.

1–1.5 mm, glabrous or hirsute on ribs;

pappi 3–6 mm.

1–2 mm, glabrous;

pappi 4.5–5.5 mm.

= 44, 88, 90.

= 46.