Flora of North America species comparison

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

1, glabrous or sparsely 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.

(and proximal cauline) petiolate;

blades ovate, oblanceolate, or spatulate, 10–30 × 5–20 mm, bases tapering, sometimes obtuse, margins entire, subentire, or dentate.

gradually reduced (weakly clasping, similar to basal).

abruptly reduced (sessile, clasping; bractlike, entire).

bracteate, glabrous or bases tomentose.

bracteate (bractlets red-tinged), densely lanate-tomentose.

(8–)13;

corolla laminae 7–9 mm.

(8–)13;

corolla laminae 6–10+ mm.

35–50+;

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

35–50+;

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

(13–)21, green, 5–7 mm, glabrous.

(13–)21, green (tips red or dark red), densely tomentose proximally.

conspicuous (bractlets 2.5–4 mm).

conspicuous (bractlets narrow, red-tinged).

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

1–4+ in corymbiform arrays.

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.