Flora of North America species comparison

petioles 3–45 mm;

blades ovate, cordate, suborbiculate, or triangular, 17–60 × 10–50 mm, margins deeply toothed, lobed, cleft, or divided, lobes indented to irregularly dissected.

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.

1–70 mm.

4–25 mm.

campanulate to hemispheric.

campanulate.

usually 8–14, rarely rudimentary or 0;

corollas white, laminae oblong, 1–4(–6) × 1–3 mm.

0.

40–100+;

corollas yellow, tubes 0.7–1.3 mm, throats tubular to tubular-funnelform, 0.8–1.3 mm, lobes 0.1–0.2 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.

10–20, lanceolate or oblanceolate to ovate-lanceolate, 4–6 × 1–2 mm.

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

borne singly or in corymbiform arrays, 4–10 × 4–10 mm.

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

suboblong, oblanceolate, or subcuneate, (1.5–)2–3 mm, margins thin (not calloused), long- or short-ciliate;

pappi 0 or of 1 antrorsely to retrorsely barbellate bristles 1–3 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.

= 65–72 or 100–116.

= 32.