Flora of North America species comparison

1 or 2–5, loosely clustered, bases densely tomentose, leaf axils usually tomentose.

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

petiolate;

blades narrowly elliptic to oblanceolate, 30–90+ × 10–20+ mm, bases tapering, margins serrate to crenate-serrate (apices rounded to acute, faces glabrous).

(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.

gradually reduced (petiolate or sessile; elliptic to lanceolate, often pinnatifid).

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

bracteate, distally tomentose.

ebracteate, glabrous.

8 or 13;

corolla laminae 5–7+ mm.

(8–)13;

corolla laminae 6–10+ mm.

45–60+;

corolla tubes 1.5–2 mm, limbs 1.5–2 mm.

60–70+;

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

13 or 21, light green, 3–5 mm, glabrous.

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

inconspicuous.

inconspicuous.

20–70(–100+) in corymbiform arrays.

15–40+ in open, cymiform arrays.

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.

1.5–2 mm, glabrous or ± scabrellous;

pappi 5.5–6.5 mm.

= 44.

= 92.