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 5–30 mm (usually equal to or longer than blades);

blades deltate-orbiculate, ovate, or subdeltate, 5–27 × 6–27 mm, irregularly lobed, lobes 3–5, ultimate margins serrate or lobed.

5–25 mm.

5–10 mm.

campanulate.

broadly campanulate to hemispheric.

6–10;

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

0.

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.

30–45(–60);

corollas yellow, tubes 0.8–1 mm, throats funnelform to narrowly campanulate, 1.8–2 mm, lobes 0.6–0.8 mm.

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

12–22, lanceolate to ovate, 4.5–6.5 × 1–2.5 mm.

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

usually borne singly, 8–10 × ca. 10 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.

oblong to narrowly oblanceolate, 2.5–3 mm, margins thin-calloused, sparsely short-ciliate;

pappi usually of 1(–2) unequal, distally subplumose bristles 2–2.5 mm, sometimes 0.

= 34.

= 34.