Flora of North America species comparison

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

usually 1 (sometimes more, clustered), usually glabrous, sometimes bases and leaf axils tomentose.

petiolate;

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

petiolate;

blades ovate to obovate, lyrate, or reniform, 10–30+ × 10–25+ mm, bases cuneate (sometimes tapering to winged petioles) to subcordate or contracted, margins crenate, dentate, or weakly lobed.

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

abruptly reduced (sessile, not clasping; lanceolate, entire or pinnately lobed to pinnatisect).

usually bracteate, sometimes ebracteate, glabrous.

0 or relatively reduced (then densely tomentose).

0, 8, or 13;

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

0 or 11–13;

corolla laminae (yellow, purple streaks in veins) 10–14+ mm.

50–65+;

corolla tubes 2–3 mm, limbs 2–3 mm.

60–75+;

corolla tubes 2–2.5 mm, limbs 4–5 mm.

13 or 21, green, 5–8+ mm, glabrous.

21, deep red or green (tips red), 6–8 mm, glabrous.

inconspicuous.

conspicuous (bractlets cyanic).

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

1–2.

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

pappi 3.5–4.5 mm.

1.5–2 mm, glabrous;

pappi 5–6 mm.

= 44, 46, 92.

= 46, 92, 138.