Flora of North America species comparison

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

1 or 3–5, clustered (often scapiform), usually floccose, lanate-tomentose, or canescent, sometimes glabrate.

(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.

(either of two forms): usually (1) sessile, sometimes petiolate;

blades narrowly lanceolate to elliptic, 15–40+ × 5–25 mm, bases tapering, margins entire or dentate toward apices (often revolute), sometimes (2) petiolate;

blades ovate to orbiculate, 10–20 × 5–15 mm, bases tapering to abruptly contracted, margins entire or wavy, sometimes dentate toward apices.

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

abruptly reduced (bractlike).

bracteate, sparsely to densely lanate-tomentose.

inconspicuously bracteate, glabrous or densely hairy.

8 or 13;

corolla laminae 10–15 mm.

0, 8, or 13;

corolla laminae 5–10 mm.

35–50+;

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

30–50+;

corolla tubes 2.5–3.5 mm, limbs 3–4 mm.

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

13 or 21, green (tips sometimes cyanic), 4–10 mm, glabrous or hairy.

inconspicuous (bractlets tomentose).

conspicuous (bractlets often cyanic).

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

1–5(–8) in cymiform to subumbelliform arrays.

1–1.5 mm, glabrous;

pappi 6–7 mm.

1.5–2 mm, glabrous;

pappi 5–6 mm.

= 46.

= 44, 46.