Flora of North America species comparison

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

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

(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.

(relatively leathery) sessile;

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

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

abruptly reduced (linear, bractlike).

bracteate, sparsely to densely tomentose.

bracteate, tomentose or glabrate.

10 or 13;

corolla laminae 6–8+ mm.

0 or 5–8;

corolla laminae 4–7 mm.

50–60+;

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

30–40+;

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

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

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

inconspicuous.

conspicuous.

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

1(–2).

1–1.5 mm, hispid;

pappi 5–7 mm.

3–3.5 mm, hirtellous;

pappi 5–6 mm.

= 46.