Flora of North America species comparison

petioles 1–6 mm;

blades usually elliptic, lanceolate, lance-ovate, ovate, or suborbiculate, sometimes linear, 4–8(–15) × 1–10(–12) mm, margins entire, irregularly and sparsely serrate, or serrate-lobed.

petioles 5–8(–12) mm;

blades reniform to cordate, 8–20(–33) × 8–20(–33) mm, margins subentire, dentate-toothed, or shallow-lobed.

10–45(–80) mm.

2–10(–15) mm.

campanulate.

cylindric to narrowly campanulate.

0.

45–60;

corollas yellow, tubes 1–1.6 mm, throats tubular to subfunnelform, 1.6–2.2 mm, lobes 0.4–0.7 mm.

5–6(–8);

corollas yellow, tubes 1–1.3 mm, throats tubular, 2–2.3(–2.8) mm, lobes 0.5–1 mm.

14–20, lanceolate to suboblanceolate, 5–6 × 1.3–1.9 mm.

5–6, linear-lanceolate, 5–6(–9) × (1–)1.3–1.7 mm.

borne singly or (2–3) in loose, corymbiform arrays, 6–9(–10) × 5–6(–8) mm.

in corymbiform arrays, 7–8(–9) × 2–3 mm.

narrowly oblanceolate to suboblanceolate, 2.5–3 mm, margins thin-calloused, short-hairy;

pappi 0, or of single bristles.

1.9–2(–2.9) mm;

pappi of 25–30 bristles 0.6–2.5(–3.5) mm.

= 34.