Flora of North America species comparison

1, glabrous or leaf axils sparsely tomentose.

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

(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).

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 (± sessile; lacerate to subcrenate).

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

bracteate, glabrous.

ebracteate or bracteate, glabrous.

8–13;

corolla laminae 4–7 mm.

(10–)13;

corolla laminae 5–7+ mm.

50–70+;

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 (tips sometimes black), 5–8 mm, glabrous.

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

conspicuous.

usually 0, sometimes inconspicuous.

8–20+ in loose, corymbiform arrays.

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

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

1–1.5 mm, hirsute on ribs;

pappi 3–5 mm.

= 44.

= 36.