Flora of North America species comparison

petioles 2–8(–12) mm;

blades pedately 3-lobed (lobes spatulate or linear), or 2–3-pinnatifid (lobes linear-filiform), 4–30 × 4–20 mm, ultimate margins entire.

petioles 2–8 mm;

blades usually broadly deltate-ovate, sometimes subovate or subcordate, 5–18(–25) × 4–18(–20) mm, (bases truncate) margins usually ± serrate, rarely laciniate.

7–15 mm.

4–25 mm.

campanulate.

campanulate.

8–12;

corollas white, laminae broadly oblong or oblong-elliptic to subspatulate, 3–7 × 2–3 mm.

0.

30–40;

corollas yellow, often purple tinged, tubes 0.8–1 mm, throats tubular, tubular-funnelform, or tubular-campanulate, 1–1.3 mm, lobes 0.3–0.4 mm.

23–35(–48);

corollas yellow, tubes (1–)1.2–1.6 mm, throats tubular to narrowly funnelform, 1.2–1.6(–2.2) mm, lobes 0.3–0.7 mm.

2–16, linear-lanceolate to narrow-ovate, 3.5–5 × 0.5–1.5 mm.

13–20, linear to narrowly or broadly lanceolate, 4–5(–6) × 0.8–1.3 mm.

(2–5) in corymbiform arrays, 5–6.5 × 5–6 mm.

borne singly or (2–10) in corymbiform arrays, 6–7 × 4–6 mm.

linear-oblong to narrowly oblanceolate, 1.8–2.5 mm, margins usually prominently calloused, sometimes thin, usually ciliate;

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

narrowly oblanceolate, 2.5–3.3 mm, margins obviously calloused, minutely hairy;

pappi 0 or of 1(–3) moderately stout bristles 2–2.8(–4.1) mm plus callous crowns.

= 34.

= 32.