Flora of North America species comparison

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

usually 1, sometimes 2, densely tomentose (at least proximally), becoming glabrate distally.

(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).

(relatively leathery) sessile;

blades linear, 10–15+ × 1–2 mm, margins entire (revolute).

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

abruptly reduced (linear, bractlike).

conspicuously bracteate, sparsely to densely tomentose.

bracteate, tomentose or glabrate.

8–10;

corolla laminae 9–10 mm.

0 or 5–8;

corolla laminae 4–7 mm.

60–70+;

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

30–40+;

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

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

13, purple to deep reddish purple, 6–9+ mm, hairy or glabrescent.

inconspicuous.

conspicuous.

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

1(–2).

1.5–2.5 mm, usually hirtellous, sometimes glabrous;

pappi 6.5–7.5 mm.

3–3.5 mm, hirtellous;

pappi 5–6 mm.

= 46, 92.