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 9–45(–80) mm;

blades usually pinnately 3-foliolate (proximal) or 3-lobed, 14–30 × 4–20 mm, lobes much broadened distally, often cruciform, sometimes 3-lobed to divided, ultimate margins entire or lobed.

10–45(–80) mm.

1–4 mm.

campanulate.

broadly campanulate to hemispheric.

0.

8–18;

corollas yellow, laminae oblong to subovate, 4–10 × 2–4 mm.

45–60;

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

70–200;

corollas yellow, tubes 1.5–2 mm, throats subtubular to narrowly funnelform, 2.5–3.5 mm, lobes 0.7–0.8 mm.

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

20–30, linear-lanceolate to oblanceolate, 4–7 × 0.8–1.5 mm.

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

borne singly or (2–4) in corymbiform arrays, 8–11 × 9–12 mm.

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

pappi 0, or of single bristles.

narrowly oblanceolate to narrow oblong-elliptic, 2.6–4 mm, margins notably calloused, sparsely short-hairy, sometimes glandular;

pappi of 1(–3) bristles 3–4.6 mm, sometimes plus hyaline scales.