Flora of North America species comparison

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

1, irregularly lanate or 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 orbiculate, ovate, oblanceolate, or rhombic, 20–50+ × 20–40+ mm, bases tapering, sometimes obtuse, margins coarsely dentate to crenate-dentate.

gradually reduced (weakly clasping, similar to basal).

gradually to abruptly reduced (petioles broad-winged, clasping, blades obovate, bases tapering, margins irregularly dentate; distal sessile, linear to lanceolate, entire).

bracteate, glabrous or bases tomentose.

bracteate, lanate or tomentose distally.

(8–)13;

corolla laminae 7–9 mm.

8–10(–13);

corolla laminae (red-orange) 8–15+ mm.

35–50+;

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

35–65+;

corolla tubes 4–5 mm, limbs 5–6 mm.

(13–)21, green, 5–7 mm, glabrous.

21, green (tips sometimes deep red), 8–10+ mm, densely tomentose proximally, sparsely tomentose distally.

conspicuous (bractlets 2.5–4 mm).

conspicuous.

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

1–3+.

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

pappi 3–4 mm.

1.5–2.5 mm, glabrous;

pappi 8–11 mm.

= 46.

= 40, 46, 92.