Flora of North America species comparison

1 or 2–5, loosely clustered, usually glabrous or glabrescent, sometimes sparsely tomentose throughout, axils (basal leaves) tomentose.

1 or 2–3, clustered, glabrous or leaf axils sparsely hairy.

(and proximal cauline) petiolate;

blades obovate, oblanceolate, spatulate, or lyrate to sublyrate (± pinnately lobed, lateral lobes 3–6 pairs, smaller than terminal lobes), 40–80+ × 10–30+ mm, bases tapering, ultimate margins incised to dentate.

(and proximal cauline) petiolate;

blades narrowly ovate to ovate (2–3 times pinnately dissected, ultimate lobes mostly linear to filiform), 50–80 × 30–50 mm, bases ± truncate or auriculate, ultimate margins entire or remotely dentate.

gradually reduced (sessile).

gradually reduced (petiolate or sessile, similar to basals).

conspicuously bracteate, glabrous or tomentose.

bracteate or ebracteate, glabrous.

8–13;

corolla laminae 7–10 mm.

8–10(–13);

corolla laminae 8–12 mm.

40–50+;

corolla tubes 4–5 mm, limbs 3–4 mm.

35–50+;

corolla tubes 2–3 mm, limbs 1.5–2.5 mm.

13–21, green (tips often yellow), 4–9+ mm, glabrous or sparsely tomentose (at least proximally).

(13–)21, green, 4–6 mm, glabrous (tips sometimes hair-tufted).

conspicuous.

0.

10–30+ in open, corymbiform or subumbelliform arrays.

10–30+ in open, corymbiform arrays.

2–3 mm, glabrous or hirtellous on ribs;

pappi 5–6 mm.

0.75–1.5 mm, hairy on ribs;

pappi 3–4 mm.

= 46, 92.