Flora of North America species comparison

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

usually 1 or 2–5, rarely 6–20, clustered, glabrous but for tomentose leaf axils.

(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.

petiolate;

blades elliptic-ovate, broadly oblanceolate, or lyrate (lateral lobes 3–9 pairs), 40–70 × 15–25 mm, bases tapering, margins irregularly and deeply parted or lobed (apices incised).

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

usually gradually, sometimes abruptly, reduced (petiolate or sessile; narrowly elliptic to oblanceolate, pinnatifid).

bracteate, sparsely to densely tomentose.

ebracteate or bracteate, glabrous.

10 or 13;

corolla laminae 6–8+ mm.

(10–)13;

corolla laminae 5–7+ mm.

50–60+;

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

60–75+;

corolla tubes 2–3 mm, limbs 2–3 mm.

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

13 or 21, light green, 4–6+ mm, glabrous.

inconspicuous.

usually 0, sometimes inconspicuous.

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

3–20+ in open or congested, corymbiform arrays, frequently subtended by smaller arrays from leaf axils.

1–1.5 mm, hispid;

pappi 5–7 mm.

1–1.5 mm, hirsute on ribs;

pappi 3–5 mm.

= 46.

= 36.