Flora of North America species comparison

1, glabrous or sparsely tomentose.

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

(and proximal cauline) petiolate;

blades ovate, oblanceolate, or spatulate, 10–30 × 5–20 mm, bases tapering, sometimes obtuse, margins entire, subentire, or 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).

abruptly reduced (sessile, clasping; bractlike, entire).

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

bracteate (bractlets red-tinged), densely lanate-tomentose.

ebracteate or bracteate, glabrous.

(8–)13;

corolla laminae 6–10+ mm.

(10–)13;

corolla laminae 5–7+ mm.

35–50+;

corolla tubes 2.5–3.5 mm, limbs 3–4 mm.

60–75+;

corolla tubes 2–3 mm, limbs 2–3 mm.

(13–)21, green (tips red or dark red), densely tomentose proximally.

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

conspicuous (bractlets narrow, red-tinged).

usually 0, sometimes inconspicuous.

1–4+ in corymbiform arrays.

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

1.5–2 mm, glabrous;

pappi 5–6 mm.

1–1.5 mm, hirsute on ribs;

pappi 3–5 mm.

= 46.

= 36.