Flora of North America species comparison

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

1 or 2–5+, loosely clustered, glabrous or leaf axils sparsely tomentose.

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.

(and proximal cauline) petiolate;

blades narrowly lanceolate (pinnatifid, lateral lobes 6+ pairs, their bases petioluliform, terminal lobes smaller than laterals), 60–100 × 10–20 mm, bases tapering, ultimate margins dentate.

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

gradually reduced (sessile).

0 or relatively reduced (then densely tomentose).

bracteate or ebracteate, glabrous.

0 or 11–13;

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

(8–)13;

corolla laminae 8–10+ mm.

60–75+;

corolla tubes 2–2.5 mm, limbs 4–5 mm.

40–55+;

corolla tubes 2–3 mm, limbs 2–3 mm.

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

(13–)21, green (tips yellow), 4–6+ mm, glabrous.

conspicuous (bractlets cyanic).

inconspicuous.

1–2.

6–20+ in corymbiform arrays.

1.5–2 mm, glabrous;

pappi 5–6 mm.

1–1.5 mm, hirtellous on ribs;

pappi 3.5–4.5 mm.

= 46, 92, 138.