Flora of North America species comparison

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

1 or 2–3, clustered, densely lanate-tomentose or canescent, tufts of arachnoid tomentum in leaf axils, or glabrescent.

(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.

(thick, leathery) petiolate;

blades narrowly lanceolate or oblanceolate, 25–100+ × 5–20 mm, bases tapering, margins entire, subentire, dentate, or wavy (adaxial faces early glabrescent).

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

gradually reduced (sessile; lanceolate to oblanceolate, entire or wavy).

ebracteate or bracteate (bractlets inconspicuous), glabrous.

0 (or relatively reduced, then densely tomentose).

8 or 13;

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

(5–)8;

corolla laminae 8–10+ mm.

60–80+;

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

35–45+;

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

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

(8–)13, green (tips red), 3–6 mm, densely tomentose proximally, glabrate distally.

0 or inconspicuous.

inconspicuous (bractlets red-tipped).

7–15+ in open, corymbiform arrays.

10–30+ in open or congested, cymiform arrays.

1–1.5 mm, glabrous;

pappi 3–5 mm.

1–1.5 mm, glabrous;

pappi 5–6 mm.

= 46.

= 46.