Flora of North America species comparison

1, glabrous or leaf axils sparsely tomentose.

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

(and proximal cauline) petiolate;

blades narrowly ovate to oblong-lanceolate, 30–70+ × 10–20+ mm, bases abruptly contracted to subcordate, margins usually serrate-dentate, sometimes subcrenate (apices acute).

(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).

gradually reduced (± sessile; lacerate to subcrenate).

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

bracteate, glabrous.

conspicuously bracteate, sparsely to densely tomentose.

8–13;

corolla laminae 4–7 mm.

8–10;

corolla laminae 9–10 mm.

50–70+;

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

60–70+;

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

13 or 21, light green (tips sometimes black), 5–8 mm, glabrous.

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

conspicuous.

inconspicuous.

8–20+ in loose, corymbiform arrays.

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

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

1.5–2.5 mm, usually hirtellous, sometimes glabrous;

pappi 6.5–7.5 mm.

= 44.

= 46, 92.