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.

(opposite or alternate): petioles 3–8(–10) mm (usually shorter than blades);

blades ovate to ovate-deltate (margins crenate, lacerate, laciniate, or serrate), or 3–5-lobed or pinnately divided (lobes crenate, lacerate, laciniate, lobed, or serrate), 6–18 × 7–20 mm.

5–25 mm.

1–5(–10) mm.

campanulate.

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.

20–40;

corollas yellow, often tinged with purple, tubes 1–1.9 mm, throats broadly tubular to subfunnelform, 2–2.5(–2.9) mm, lobes 0.4–0.6 mm.

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

10–16, linear-lanceolate, lanceolate, to oblanceolate, 4–6.4(–8) × 1–1.7 mm (apices acute).

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

borne singly or (2–3) in corymbiform arrays (often obscured by leaves), 7–10 × 5–9 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 oblong to narrowly oblanceolate, 2.5–3.2(–3.6) mm, margins thin-calloused, short-hairy;

pappi usually of 1(–2) delicate bristles 1–3(–4) mm, rarely plus vestigial, hyaline scales, sometimes 0.

= 34.

= 34.