Flora of North America species comparison

1 or 2–4, clustered (proximally deeply purple-tinged, distally lightly tinged), glabrous or tomentose at bases and in leaf axils.

usually 1 or 2–5, rarely 6–20, clustered, glabrous but for tomentose leaf axils.

(and proximal cauline) petiolate;

blades obovate or lyrate (pinnately lobed, lateral lobes 2–6+ pairs, their bases petioluliform, terminal lobes larger than laterals, midribs narrowly winged), 60–160+ × 20–40+ mm, bases wide, ultimate margins sharply dentate, crenate-dentate, or irregularly incised.

petiolate;

blades elliptic-ovate, broadly oblanceolate, or lyrate (lateral lobes 3–9 pairs), 40–70 × 15–25 mm, bases tapering, margins irregularly and deeply parted or lobed (apices incised).

gradually reduced (petiolate or sessile; shallowly lobed, midribs ± winged, distals bractlike, dentate to incised).

usually gradually, sometimes abruptly, reduced (petiolate or sessile; narrowly elliptic to oblanceolate, pinnatifid).

ebracteate, glabrous.

ebracteate or bracteate, glabrous.

(8–)13;

corolla laminae 6–10+ mm.

(10–)13;

corolla laminae 5–7+ mm.

60–70+;

corolla tubes 2–3 mm, limbs 3.5–4.5 mm.

60–75+;

corolla tubes 2–3 mm, limbs 2–3 mm.

(13–)21, green (tips yellow), 5–7 mm, glabrous (tips sometimes hairy).

13 or 21, light green, 4–6+ mm, glabrous.

inconspicuous.

usually 0, sometimes inconspicuous.

15–40+ in open, cymiform arrays.

3–20+ in open or congested, corymbiform arrays, frequently subtended by smaller arrays from leaf axils.

1.5–2 mm, glabrous or ± scabrellous;

pappi 5.5–6.5 mm.

1–1.5 mm, hirsute on ribs;

pappi 3–5 mm.

= 92.

= 36.