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 0–12 mm;

blades usually lanceolate, linear, or oblanceolate, rarely ovate, usually 3- or 5-lobed (lobes acute or attenuate; bases cuneate), (5–)15–30 × 2–15 mm, ultimate margins entire, subentire, or laciniate.

5–25 mm.

6–50 mm.

campanulate.

narrowly campanulate to campanulate.

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.

20–33(–50);

corollas yellow, tubes 1–1.5 mm, throats narrowly campanulate, 1–1.5 mm, lobes 0.5–1 mm.

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

12–15, narrowly to broadly lanceolate, 4–5 × 1–2 mm.

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

borne singly or in loose, corymbiform arrays, 5.5–7(–9) × 3.5–5.5(–6) 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.

narrowly oblanceolate to linear-oblong, 2–3 mm, margins thin-calloused, puberulent;

pappi usually 0, sometimes 1–2 bristles 1.5–2 mm.

= 34.

= 34, ca. 136.