Flora of North America species comparison

1 or 2–5, loosely clustered, bases densely tomentose, leaf axils usually tomentose.

1, densely lanate-tomentose proximally, floccose-tomentose to glabrescent distally.

petiolate;

blades narrowly elliptic to oblanceolate, 30–90+ × 10–20+ mm, bases tapering, margins serrate to crenate-serrate (apices rounded to acute, faces glabrous).

(and proximal cauline) petiolate;

blades lanceolate to narrowly ovate or elliptic, 40–120+ × 20–50+ mm, bases tapering, sometimes oblique, margins subentire, crenate, or serrate-dentate.

gradually reduced (petiolate or sessile; elliptic to lanceolate, often pinnatifid).

gradually reduced (± petiolate or sessile, weakly clasping; dentate to pinnately lobed).

bracteate, distally tomentose.

bracteate, sparsely to densely tomentose.

8 or 13;

corolla laminae 5–7+ mm.

10 or 13;

corolla laminae 6–8+ mm.

45–60+;

corolla tubes 1.5–2 mm, limbs 1.5–2 mm.

50–60+;

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

13 or 21, light green, 3–5 mm, glabrous.

13 or 21, light green, 5–8 mm, usually glabrous (sometimes hairy proximally).

inconspicuous.

inconspicuous.

20–70(–100+) in corymbiform arrays.

10–30+ in open, corymbiform arrays (more in robust individuals).

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.

1–1.5 mm, hispid;

pappi 5–7 mm.

= 44.

= 46.