Flora of North America species comparison

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

1 (striated, frequently hollow, often pink- to purple-tinged), 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) obscurely petiolate;

blades obovate to oblanceolate, sometimes lyrate (lateral lobes to 5 pairs, terminal lobes larger than laterals), 50–150+ × 10–30+ mm, bases tapering, ultimate margins crenate to irregularly undulate.

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

gradually reduced (weakly clasping, similar to basal).

0 or relatively reduced (then densely tomentose).

bracteate, glabrous or bases tomentose.

0 or 11–13;

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

(8–)13;

corolla laminae 7–9 mm.

60–75+;

corolla tubes 2–2.5 mm, limbs 4–5 mm.

35–50+;

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

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

(13–)21, green, 5–7 mm, glabrous.

conspicuous (bractlets cyanic).

conspicuous (bractlets 2.5–4 mm).

1–2.

8–30+ in umbelliform or cymiform arrays (robust plants with multiple arrays).

1.5–2 mm, glabrous;

pappi 5–6 mm.

1–1.5 mm, sparsely hirtellous on ribs or glabrous;

pappi 3–4 mm.

= 46, 92, 138.

= 46.