Flora of North America species comparison

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

1, densely lanate-tomentose proximally, floccose-tomentose to glabrescent distally.

(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 lanceolate to narrowly ovate or elliptic, 40–120+ × 20–50+ mm, bases tapering, sometimes oblique, margins subentire, crenate, or serrate-dentate.

gradually reduced (weakly clasping, similar to basal).

gradually reduced (± petiolate or sessile, weakly clasping; dentate to pinnately lobed).

bracteate, glabrous or bases tomentose.

bracteate, sparsely to densely tomentose.

(8–)13;

corolla laminae 7–9 mm.

10 or 13;

corolla laminae 6–8+ mm.

35–50+;

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

50–60+;

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

(13–)21, green, 5–7 mm, glabrous.

13 or 21, light green, 5–8 mm, usually glabrous (sometimes hairy proximally).

conspicuous (bractlets 2.5–4 mm).

inconspicuous.

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

10–30+ in open, corymbiform arrays (more in robust individuals).

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

pappi 3–4 mm.

1–1.5 mm, hispid;

pappi 5–7 mm.

= 46.

= 46.