Flora of North America species comparison

1 or, usually, multiple, clustered, densely tomentose to glabrescent.

1 or 2–5+, loosely clustered, glabrous or leaf axils sparsely tomentose.

(soon withering), petiolate;

blades lyrate (lateral lobes 2–6+ pairs), ovate, obovate, or spatulate, 70–100+ × 20–30+ mm, bases tapering, ultimate margins irregularly and coarsely serrate-dentate.

(and proximal cauline) petiolate;

blades narrowly lanceolate (pinnatifid, lateral lobes 6+ pairs, their bases petioluliform, terminal lobes smaller than laterals), 60–100 × 10–20 mm, bases tapering, ultimate margins dentate.

gradually reduced (± petiolate, proximal and mid similar to basal, terminal lobes smaller than laterals; distal sessile, incised).

gradually reduced (sessile).

bracteate, sparsely to densely lanate-tomentose.

bracteate or ebracteate, glabrous.

8 or 13;

corolla laminae 10–15 mm.

(8–)13;

corolla laminae 8–10+ mm.

35–50+;

corolla tubes 3.5–4.5 mm, limbs 2.5–3.5 mm.

40–55+;

corolla tubes 2–3 mm, limbs 2–3 mm.

13 or 21, green (tips sometimes yellow), 8–10+ mm, densely tomentose proximally, glabrescent distally.

(13–)21, green (tips yellow), 4–6+ mm, glabrous.

inconspicuous (bractlets tomentose).

inconspicuous.

5–20+ in open or compact (rarely), cymiform arrays.

6–20+ in corymbiform arrays.

1–1.5 mm, glabrous;

pappi 6–7 mm.

1–1.5 mm, hirtellous on ribs;

pappi 3.5–4.5 mm.

= 46.