Flora of North America species comparison

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

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

petiolate;

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

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; elliptic to lanceolate, often pinnatifid).

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

bracteate, distally tomentose.

ebracteate or bracteate, glabrous.

8 or 13;

corolla laminae 5–7+ mm.

(10–)13;

corolla laminae 5–7+ mm.

45–60+;

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

60–75+;

corolla tubes 2–3 mm, limbs 2–3 mm.

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

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

inconspicuous.

usually 0, sometimes inconspicuous.

20–70(–100+) in corymbiform arrays.

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

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.

1–1.5 mm, hirsute on ribs;

pappi 3–5 mm.

= 44.

= 36.