Flora of North America species comparison

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

usually 1, sometimes 2–4, clustered, glabrous or sparsely tomentose proximally.

(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.

petiolate;

blades usually broadly lanceolate to ovate, sometimes subhastate, 20–50+ × 20–40+ mm, bases truncate to subcordate or obtuse, margins crenate, denticulate, bluntly dentate, or sharply dentate (proximal cauline leaves petiolate; margins usually pinnately lobed to laciniate, sometimes subentire).

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

gradually reduced (becoming sessile, sometimes clasping).

ebracteate or bracteate (bractlets inconspicuous), glabrous.

bracteate, glabrous.

8 or 13;

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

0, 8, or 13;

corolla laminae 6–10+ mm.

60–80+;

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

70–80+;

corolla tubes 2.5–3.5 mm, limbs 2–3 mm.

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

(13–)21(–30+), light green, 3–8 mm, glabrous.

0 or inconspicuous.

inconspicuous.

7–15+ in open, corymbiform arrays.

5–20+ in open or congested, subumbelliform arrays.

1–1.5 mm, glabrous;

pappi 3–5 mm.

1–1.5 mm, glabrous;

pappi 4.5–5.5 mm.

= 46.

= 40, 44, 46, 80.