Flora of North America species comparison

petioles 2–15 mm;

blades deltate-ovate to ovate-rhombic, 6–23 × 5–24 mm, margins usually entire or serrate to serrate-crenate, sometimes shallow-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.

5–25 mm.

10–80 mm.

campanulate.

campanulate to hemispheric.

6–10;

corollas white, sometimes pink tinged, laminae broadly oblong to oblong-elliptic, 3–7 × 1.5–3 mm.

12–18;

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

30–40;

corollas yellow, often purple tinged, tubes 0.8–1 mm, throats tubular to tubular-funnelform, 1.2–1.4 mm, lobes 0.3–0.4 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.

13–20, linear-lanceolate to narrow-ovate, 4–5.5 × 1–2 mm.

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

in corymbiform arrays, 5–7 × 5.5–7 mm.

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

linear-oblong to oblanceolate, 2–2.8 mm, margins prominently calloused, long-ciliate;

pappi of 2(–3+) barbellulate bristles 1.5–2.5 mm plus crowns of hyaline, laciniate scales.

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.

= 34.