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 10–35 mm;

blades usually palmately 3-lobed or ± cruciform, 6–35 × 10–50 mm, lobes usually again ternately dissected, cleft, or parted.

10–45(–80) mm.

10–80 mm.

campanulate.

campanulate to hemispheric.

0.

12–18;

corollas yellow, laminae oblong, 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.

50–100;

corollas yellow, tubes 1.2–1.5 mm, throats tubular to broadly tubular, 2.2–3 mm, lobes 0.4–0.6 mm.

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

20–30, oblanceolate or lanceolate to linear-lanceolate, 6–7 × 1–2 mm, apices usually acute, sometimes short-attenuate.

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

borne singly or (2–3) in corymbiform arrays, 8–10 × 10–13 mm.

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

pappi 0, or of single bristles.

linear-elliptic to narrowly oblanceolate, (2–)3–4 mm, margins usually prominently calloused, sometimes thin, usually densely ciliate, sometimes short-hairy;

pappi 0 or of 1(–2) retrorsely or erectly barbellate (at least near tips) bristles 1–4 mm plus crowns of hyaline, laciniate scales.

= 34.