Flora of North America species comparison

petioles 1–6 mm;

blades usually elliptic, lanceolate, lance-ovate, ovate, or suborbiculate, sometimes linear, 4–8(–15) × 1–10(–12) mm, margins entire, irregularly and sparsely serrate, or serrate-lobed.

petioles usually 0 mm;

blades linear, 3–8(–15) × 0.2–1 mm;

margins usually entire, rarely 1–3-lobed.

10–45(–80) mm.

1–10 mm.

campanulate.

campanulate.

0.

0.

45–60;

corollas yellow, tubes 1–1.6 mm, throats tubular to subfunnelform, 1.6–2.2 mm, lobes 0.4–0.7 mm.

24–36;

corollas yellow, tubes 0.5–1 mm, throats tubular, 1–1.2, lobes 0.4–0.6 mm.

14–20, lanceolate to suboblanceolate, 5–6 × 1.3–1.9 mm.

3–4, linear or lanceolate to oblanceolate, 5(–5) × 0.5–1.2 mm.

borne singly or (2–3) in loose, corymbiform arrays, 6–9(–10) × 5–6(–8) mm.

(2–6) in tight, corymbiform arrays, 4–6.5 × 3.5–5.5 mm.

narrowly oblanceolate to suboblanceolate, 2.5–3 mm, margins thin-calloused, short-hairy;

pappi 0, or of single bristles.

oblanceolate, (1.5–)2.2–2.8 mm;

margins moderately calloused, moderately to densely coarse-ciliate;

pappi usually 0, sometimes of 1–2 bristles 1–2 mm, usually plus crowns of cilialike scales, rarely callous crowns.

= 38 ± 2.