Flora of North America species comparison

petioles 2–8(–12) mm;

blades pedately 3-lobed (lobes spatulate or linear), or 2–3-pinnatifid (lobes linear-filiform), 4–30 × 4–20 mm, ultimate margins entire.

petioles 12–40 mm;

blades usually cordate to subreniform, 8–40(–50) × 8–50(–60) mm, margins irregularly dentate, laciniate, or ± 3-lobed, seldom more divided.

7–15 mm.

10–70 mm.

campanulate.

campanulate to hemispheric.

8–12;

corollas white, laminae broadly oblong or oblong-elliptic to subspatulate, 3–7 × 2–3 mm.

usually 12–18 (sometimes 0 or 1–6 in plants from w Presidio County);

corollas yellow, laminae oblong, 4–10 × 2–4 mm.

30–40;

corollas yellow, often purple tinged, tubes 0.8–1 mm, throats tubular, tubular-funnelform, or tubular-campanulate, 1–1.3 mm, lobes 0.3–0.4 mm.

60–100;

corollas yellow, tubes 1–1.3 mm, throats tubular, 2.5–3.2 mm, lobes 0.4–0.6 mm.

2–16, linear-lanceolate to narrow-ovate, 3.5–5 × 0.5–1.5 mm.

28–36, lanceolate to linear, seldom oblanceolate, 5–9 × 0.5–1.6 mm, apices acute to short- or long-attenuate.

(2–5) in corymbiform arrays, 5–6.5 × 5–6 mm.

borne singly or (2–3) in corymbiform arrays, 8–10 × 7–14 mm.

linear-oblong to narrowly oblanceolate, 1.8–2.5 mm, margins usually prominently calloused, sometimes thin, usually ciliate;

pappi of 2(–3+) barbellulate bristles 1.5–2.5 mm plus crowns of hyaline, laciniate scales.

linear-elliptic to narrowly oblanceolate, (2–)3–4 mm, margins usually prominently calloused (sometimes thin), usually densely ciliate, sometimes short-hairy;

pappi 0 or of 1(–2) usually antrorsely, sometimes erectly or retrorsely barbellate, bristles (1–)3–4(–6) mm plus crowns of hyaline, laciniate scales.

= 34.

= 34.