Flora of North America species comparison

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

1, glabrous or bases hairy.

petiolate;

blades lanceolate to narrowly elliptic or oblanceolate, 30–60+ × 10–20+ mm, bases tapering, sometimes obtuse, margins subentire to dentate or serrate.

(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 (proximals petiolate, sublyrate; mids sessile, not clasping, lanceolate, dissected, incised, or lacerate; distals sessile, bractlike).

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

usually bracteate, sometimes ebracteate, glabrous.

ebracteate (or bractlets 1–2), glabrous.

0, 8, or 13;

corolla laminae (pale yellow) 5–10+ mm.

13 or 21;

corolla laminae 10–12+ mm.

50–65+;

corolla tubes 2–3 mm, limbs 2–3 mm.

40–60+;

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

13 or 21, green, 5–8+ mm, glabrous.

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

inconspicuous.

0 or inconspicuous.

2–10+ in loose or compact, corymbiform arrays.

3–6+ in compact, cymiform arrays.

1–2 mm, usually glabrous, sometimes hispidulous on ribs;

pappi 3.5–4.5 mm.

5–6 mm, glabrous;

pappi 5–7 mm.

= 44, 46, 92.