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 2–4 mm;

blades subovate to ovate-deltate, 5–7(–10) × 5–8(–12) mm, margins obtuse-serrate to incised-lobed.

10–45(–80) mm.

1–3(–8) mm.

campanulate.

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.

11–16;

corollas white, tubes 1 mm, throats tubular, 2.5 mm, lobes 1 mm.

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

9–12, linear-lanceolate, 4–5 × 0.8–1.2 mm.

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

usually in corymbiform arrays, rarely borne singly, 6–7 × 3–4 mm.

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

pappi 0, or of single bristles.

1.9–2 mm;

pappi of 2–6 bristles 0.5–2 mm plus vestigial nubs between bristles, or of 10–20 bristles 0.1–2 mm.

= 34.