Flora of North America species comparison

1 (per rosette, rosettes clustered), densely lanate or canescent.

1, glabrous or bases hairy.

(and proximal cauline) petiolate;

blades ovate or elliptic to lanceolate, 25–50+ × 10–30 mm, bases tapering, margins entire or irregularly undulate to weakly dentate (abaxial faces persistently lanate, adaxial lanate to subglabrescent).

(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 (petiolate or sessile, then weakly clasping; elliptic to lanceolate, entire or weakly dentate).

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

bracteate, usually densely lanate to floccose-tomentose (sometimes subglabrescent).

ebracteate (or bractlets 1–2), glabrous.

8–10 (or 13);

corolla laminae 8–10+ mm.

13 or 21;

corolla laminae 10–12+ mm.

35–50+;

corolla tubes 2.5–3.5 mm, limbs 3.5–4.5 mm.

40–60+;

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

13 or 21, green, 5–8+ mm, densely tomentose.

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

inconspicuous (bractlets tomentose).

0 or inconspicuous.

8–15+ in corymbiform arrays.

3–6+ in compact, cymiform arrays.

2.5–3.5+ mm, glabrous;

pappi 4.5–7 mm.

5–6 mm, glabrous;

pappi 5–7 mm.

= 46, 92.