Flora of North America species comparison

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

1 or 3–5, loosely clustered, glabrous or bases and leaf axils 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, relatively thick and turgid) petiolate (petioles sometimes winged);

blades elliptic-ovate or suborbiculate to spatulate, 15–25 × 5–20 mm, bases tapering, margins entire or dentate (at apices).

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

abruptly reduced (becoming sessile, bractlike).

bracteate, sparsely to densely lanate-tomentose.

ebracteate, glabrous.

8 or 13;

corolla laminae 10–15 mm.

(0) or 8–13;

corolla laminae 7–9 mm.

35–50+;

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

35–50+;

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

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

13, cyanic, 8–9 mm, glabrous or loosely tomentose proximally.

inconspicuous (bractlets tomentose).

inconspicuous.

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

1–2(–4).

1–1.5 mm, glabrous;

pappi 6–7 mm.

1–2 mm, glabrous;

pappi 3–4.5 mm.

= 46.