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 (0–)1–7 mm;

blades lanceolate, lance-ovate, ovate, or suborbiculate, 4–8 × 2–8 mm, margins entire, serrate, or shallow-lobed.

10–45(–80) mm.

0–3 mm.

campanulate.

narrowly campanulate.

0.

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.

11–17;

corollas white, tubes 0.8–1 mm, throats tubular to subfunnelform, 1.5–3 mm, lobes 0.8–1 mm.

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

8–10(–12), linear to broadly or narrowly lanceolate, 4.5–6 × 1–2 mm.

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

usually borne singly (often obscured by the dense leaves), 7–8(–10) × 3.5–7 mm.

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

pappi 0, or of single bristles.

oblong to oblanceolate, 1.8–2.2(–2.5) mm, margins notably calloused, glabrous;

pappi of 2–3(–5) ± flattened bristles 1.5–2.3 mm.