Flora of North America species comparison

usually 1, rarely 2–3, clustered, glabrous.

1, glabrous or bases hairy.

(and proximal cauline) petiolate (petioles narrow);

blades narrowly lanceolate or ovate to oblong-ovate, 20–60+ × 10–40+ mm, bases abruptly contracted to tapering, margins subentire to crenate-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.

gradually reduced (sessile, weakly clasping; lanceolate to oblong or sublyrate, often pinnately lobed).

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

ebracteate or bracteate (bractlets inconspicuous), glabrous.

ebracteate (or bractlets 1–2), glabrous.

8 or 13;

corolla laminae (deep yellow to orange-red) 6–8+ mm.

13 or 21;

corolla laminae 10–12+ mm.

60–80+;

corolla tubes 4.5–5.5 mm, limbs 2.5–3.5 mm.

40–60+;

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

13 or 21, light green (or tips cyanic), 4–8 mm, glabrous.

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

0 or inconspicuous.

0 or inconspicuous.

7–15+ in open, corymbiform arrays.

3–6+ in compact, cymiform arrays.

1–1.5 mm, glabrous;

pappi 3–5 mm.

5–6 mm, glabrous;

pappi 5–7 mm.

= 46.