Flora of North America species comparison

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

1 or 2–5, loosely clustered, bases densely tomentose, leaf axils usually 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.

petiolate;

blades narrowly elliptic to oblanceolate, 30–90+ × 10–20+ mm, bases tapering, margins serrate to crenate-serrate (apices rounded to acute, faces glabrous).

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

gradually reduced (petiolate or sessile; elliptic to lanceolate, often pinnatifid).

ebracteate or bracteate (bractlets inconspicuous), glabrous.

bracteate, distally tomentose.

8 or 13;

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

8 or 13;

corolla laminae 5–7+ mm.

60–80+;

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

45–60+;

corolla tubes 1.5–2 mm, limbs 1.5–2 mm.

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

13 or 21, light green, 3–5 mm, glabrous.

0 or inconspicuous.

inconspicuous.

7–15+ in open, corymbiform arrays.

20–70(–100+) in corymbiform arrays.

1–1.5 mm, glabrous;

pappi 3–5 mm.

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.

= 46.

= 44.