Flora of North America species comparison

1 (striated, frequently hollow, often pink- to purple-tinged), glabrous or leaf axils sparsely tomentose.

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

(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.

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 (weakly clasping, similar to basal).

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

bracteate, glabrous or bases tomentose.

0 or relatively reduced (then densely tomentose).

(8–)13;

corolla laminae 7–9 mm.

0 or 11–13;

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

35–50+;

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

60–75+;

corolla tubes 2–2.5 mm, limbs 4–5 mm.

(13–)21, green, 5–7 mm, glabrous.

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

conspicuous (bractlets 2.5–4 mm).

conspicuous (bractlets cyanic).

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

1–2.

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

pappi 3–4 mm.

1.5–2 mm, glabrous;

pappi 5–6 mm.

= 46.

= 46, 92, 138.