Flora of North America species comparison

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

1 (often cyanic), glabrous.

(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.

(relatively turgid, abaxial faces cyanic) petiolate;

blades reniform to subreniform, 5–15+ × 5–25+ mm, bases abruptly contracted to cordate, margins usually crenate, sometimes wavy.

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

abruptly reduced (1–4, sessile; bractlike, entire).

ebracteate or bracteate (bractlets inconspicuous), glabrous.

ebracteate, glabrous.

8 or 13;

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

8 or 13;

corolla laminae 8–10+ mm.

60–80+;

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

40–50+;

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

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

13 or 21, deep red, 8–10+ mm, glabrous.

0 or inconspicuous.

conspicuous (bractlets often cyanic).

7–15+ in open, corymbiform arrays.

borne singly.

1–1.5 mm, glabrous;

pappi 3–5 mm.

1.5–2.5 mm, glabrous;

pappi 4–5.5 mm.

= 46.