Flora of North America species comparison

1 or 2–3, loosely clustered, glabrous.

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

(and proximal cauline) petiolate;

blades ± orbiculate to oblong, or lyrate (lateral lobes 1–3 pairs, sinuses usually rounded, midribs usually winged), 50–120+ × 30–70+ mm, bases cordate to subcordate, margins shallowly to deeply incised.

(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 and clasping; lanceolate, incised).

abruptly reduced (becoming sessile, bractlike).

ebracteate or inconspicuously bracteate, glabrous.

ebracteate, glabrous.

8 or 13;

corolla laminae 10–15+ mm.

(0) or 8–13;

corolla laminae 7–9 mm.

30–45+;

corolla tubes 3–4 mm, limbs 3.5–4.5 mm.

35–50+;

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

(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally.

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

conspicuous.

inconspicuous.

8–15+ in corymbiform or subumbelliform arrays.

1–2(–4).

2.5–3.5 mm, glabrous;

pappi 5–7 mm.

1–2 mm, glabrous;

pappi 3–4.5 mm.

= 46.