Flora of North America species comparison

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

1 or 3–5, loosely clustered, glabrous or bases and leaf axils tomentose.

petiolate;

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

(and proximal cauline, relatively thick and turgid) petiolate (petioles sometimes winged);

blades elliptic-ovate or suborbiculate to spatulate, 15–25 × 5–20 mm, bases tapering, margins entire or dentate (at apices).

gradually reduced (petiolate or sessile; elliptic to lanceolate, often pinnatifid).

abruptly reduced (becoming sessile, bractlike).

bracteate, distally tomentose.

ebracteate, glabrous.

8 or 13;

corolla laminae 5–7+ mm.

(0) or 8–13;

corolla laminae 7–9 mm.

45–60+;

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

35–50+;

corolla tubes 2–3 mm, limbs 2.5–3.5 mm.

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

13, cyanic, 8–9 mm, glabrous or loosely tomentose proximally.

inconspicuous.

inconspicuous.

20–70(–100+) in corymbiform arrays.

1–2(–4).

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.

1–2 mm, glabrous;

pappi 3–4.5 mm.

= 44.