Flora of North America species comparison

1 or 2–3, clustered, floccose-tomentose proximally and in leaf axils, otherwise sparsely tomentose or glabrescent.

1 or multiple, loosely clustered, usually glabrous, sometimes tomentose proximally and in leaf axils.

(and proximal cauline) petiolate;

blades narrowly elliptic to elliptic-ovate or oblanceolate to suborbiculate or sublyrate, 20–70+ × 10–30+ mm, bases tapering to rounded or abruptly contracted, margins subentire to crenate, serrate-dentate, or pinnately lobed (abaxial faces floccose-tomentose, especially along midribs, ± glabrescent).

(and proximal cauline) petiolate;

blades orbiculate, ovate, or obovate, 40–100+ × 20–80+ mm, bases tapering, rounded, or abruptly contracted, margins crenate, dentate, or serrate.

gradually reduced (petiolate, sublyrate or pinnatisect, abaxial faces sparsely hairy; distals sessile, subentire to irregularly dissected).

gradually reduced (sessile, clasping; pinnatisect or sublyrate).

conspicuously bracteate, sparsely to densely tomentose.

bracteate, glabrous or proximally tomentose.

8–10;

corolla laminae 9–10 mm.

8–13(–21);

corolla laminae 7–10 mm.

60–70+;

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

40–50+;

corolla tubes 2–3 mm, limbs 2–3 mm.

13 or 21, green (tips sometimes cyanic), 5–6+ mm, densely tomentose proximally, glabrescent distally.

13 or 21, green (tips sometimes reddish), 3–6 mm, glabrous or floccose-tomentose proximally.

inconspicuous.

conspicuous.

6–20+ in open or congested, corymbiform arrays.

6–15+ in open or congested, corymbiform arrays.

1.5–2.5 mm, usually hirtellous, sometimes glabrous;

pappi 6.5–7.5 mm.

1–1.5 mm, glabrous or hirsute on ribs;

pappi 3–6 mm.

= 46, 92.

= 44, 88, 90.