Flora of North America species comparison

1 or multiple, clustered, usually glabrous, rarely sparsely floccose-tomentose, leaf axils sometimes tomentose.

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

(and proximal cauline, relatively thick and turgid) petiolate;

blades lanceolate or narrowly oblanceolate, 20–40+ × 5–15 mm, bases tapering, margins usually entire, sometimes sub-pinnatisect (apices subentire or dentate).

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 (± petiolate or sessile).

gradually reduced (becoming sessile, sometimes clasping).

bracteate, glabrous or sparsely tomentose.

bracteate, glabrous.

8–10(–13);

corolla laminae 5–8+ mm.

0, 8, or 13;

corolla laminae 6–10+ mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

70–80+;

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

13 or 21, green, 6–10 mm, sparsely tomentose proximally, glabrous distally.

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

inconspicuous.

inconspicuous.

4–15+ in corymbiform arrays.

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

1.5–2.5 mm, glabrous or sparsely hirtellous on ribs;

pappi 5–6 mm.

1–1.5 mm, glabrous;

pappi 4.5–5.5 mm.

= 46.

= 40, 44, 46, 80.