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 7–25 mm;

blades ovate-reniform to ovate-cordate, 10–40 × 8–40 mm, margins unevenly serrate-dentate.

5–25 mm.

10–19 mm.

campanulate.

broadly campanulate.

6–10;

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

20–150;

corollas yellow, tubes 1.2–2 mm, throats narrowly funnelform, 2–3.3 mm, lobes 0.7–0.8 mm.

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

18–28, linear-lanceolate, 6–9 × 1.2–2 mm.

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

borne singly (nodding or erect), 10–12 × 12–14 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.

2.1–3 mm;

pappi of 25–35 bristles 0.5–1.5(–2) mm.

= 34.

= 34 + 1 frag.