Flora of North America species comparison

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

usually 1, sometimes 2–4, clustered, glabrous or sparsely tomentose proximally.

(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.

petiolate;

blades usually broadly lanceolate to ovate, sometimes subhastate, 20–50+ × 20–40+ mm, bases truncate to subcordate or obtuse, margins crenate, denticulate, bluntly dentate, or sharply dentate (proximal cauline leaves petiolate; margins usually pinnately lobed to laciniate, sometimes subentire).

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

gradually reduced (becoming sessile, sometimes clasping).

bracteate, glabrous or proximally tomentose.

bracteate, glabrous.

8–13(–21);

corolla laminae 7–10 mm.

0, 8, or 13;

corolla laminae 6–10+ mm.

40–50+;

corolla tubes 2–3 mm, limbs 2–3 mm.

70–80+;

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

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

(13–)21(–30+), light green, 3–8 mm, glabrous.

conspicuous.

inconspicuous.

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

5–20+ in open or congested, subumbelliform arrays.

1–1.5 mm, glabrous or hirsute on ribs;

pappi 3–6 mm.

1–1.5 mm, glabrous;

pappi 4.5–5.5 mm.

= 44, 88, 90.

= 40, 44, 46, 80.