Flora of North America species comparison

1, glabrous or leaf axils sparsely tomentose.

1, glabrous or bases hairy.

(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).

(and proximal cauline, relatively turgid or leathery) petiolate;

blades reniform to suborbiculate, 40–70+ × 40–80+ mm, bases truncate to cordate, margins dentate or shallowly lobed.

gradually reduced (± sessile; lacerate to subcrenate).

abruptly reduced (petiolate or sessile, oblanceolate, pinnatifid; distal sessile, bractlike).

bracteate, glabrous.

ebracteate (or bractlets 1–2), glabrous.

8–13;

corolla laminae 4–7 mm.

13 or 21;

corolla laminae 10–12+ mm.

50–70+;

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

40–60+;

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

13 or 21, light green (tips sometimes black), 5–8 mm, glabrous.

(13–)21, dark green with yellow margins, 8–11+ mm, glabrous.

conspicuous.

0 or inconspicuous.

8–20+ in loose, corymbiform arrays.

3–6+ in compact, cymiform arrays.

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

5–6 mm, glabrous;

pappi 5–7 mm.

= 44.