Flora of North America species comparison

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

1, glabrous or bases hairy.

(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).

(and proximal cauline, relatively turgid or leathery) petiolate;

blades reniform to suborbiculate, 40–70+ × 40–80+ mm, bases truncate to cordate, margins dentate or shallowly lobed.

gradually reduced (± petiolate or sessile).

abruptly reduced (petiolate or sessile, oblanceolate, pinnatifid; distal sessile, bractlike).

bracteate, glabrous or sparsely tomentose.

ebracteate (or bractlets 1–2), glabrous.

8–10(–13);

corolla laminae 5–8+ mm.

13 or 21;

corolla laminae 10–12+ mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

40–60+;

corolla tubes 3–4 mm, limbs 2.5–3.5 mm.

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

(13–)21, dark green with yellow margins, 8–11+ mm, glabrous.

inconspicuous.

0 or inconspicuous.

4–15+ in corymbiform arrays.

3–6+ in compact, cymiform arrays.

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

pappi 5–6 mm.

5–6 mm, glabrous;

pappi 5–7 mm.

= 46.