Flora of North America species comparison

1, glabrous or sparsely tomentose.

1, glabrous or bases hairy.

(and proximal cauline) petiolate;

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

(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.

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

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

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

ebracteate (or bractlets 1–2), glabrous.

(8–)13;

corolla laminae 6–10+ mm.

13 or 21;

corolla laminae 10–12+ mm.

35–50+;

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

40–60+;

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

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

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

conspicuous (bractlets narrow, red-tinged).

0 or inconspicuous.

1–4+ in corymbiform arrays.

3–6+ in compact, cymiform arrays.

1.5–2 mm, glabrous;

pappi 5–6 mm.

5–6 mm, glabrous;

pappi 5–7 mm.

= 46.