Flora of North America species comparison

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

1, glabrous or leaf axils sparsely tomentose.

(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) petiolate;

blades narrowly ovate to oblong-lanceolate, 30–70+ × 10–20+ mm, bases abruptly contracted to subcordate, margins usually serrate-dentate, sometimes subcrenate (apices acute).

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

gradually reduced (± sessile; lacerate to subcrenate).

ebracteate or bracteate (bractlets inconspicuous), glabrous.

bracteate, glabrous.

8 or 13;

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

8–13;

corolla laminae 4–7 mm.

60–80+;

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

50–70+;

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

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

13 or 21, light green (tips sometimes black), 5–8 mm, glabrous.

0 or inconspicuous.

conspicuous.

7–15+ in open, corymbiform arrays.

8–20+ in loose, corymbiform arrays.

1–1.5 mm, glabrous;

pappi 3–5 mm.

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

= 46.

= 44.