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 0–12 mm;

blades usually lanceolate, linear, or oblanceolate, rarely ovate, usually 3- or 5-lobed (lobes acute or attenuate; bases cuneate), (5–)15–30 × 2–15 mm, ultimate margins entire, subentire, or laciniate.

10–45(–80) mm.

6–50 mm.

campanulate.

narrowly campanulate to 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.

20–33(–50);

corollas yellow, tubes 1–1.5 mm, throats narrowly campanulate, 1–1.5 mm, lobes 0.5–1 mm.

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

12–15, narrowly to broadly lanceolate, 4–5 × 1–2 mm.

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

borne singly or in loose, corymbiform arrays, 5.5–7(–9) × 3.5–5.5(–6) mm.

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

pappi 0, or of single bristles.

narrowly oblanceolate to linear-oblong, 2–3 mm, margins thin-calloused, puberulent;

pappi usually 0, sometimes 1–2 bristles 1.5–2 mm.

= 34, ca. 136.