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 3–13 mm;

blades ovate, subcordate, subdeltate, or subreniform, 5–17(–22) × 5–17(–30) mm, margins almost entire to irregularly serrate or serrate-lobed (faces pilose to hirsute).

7–15 mm.

2–13(–20) mm.

campanulate.

subcylindric, subfunnelform, or narrowly campanulate.

8–12;

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

8–16;

corollas yellow or white, tubes 0.8–1.3 mm, throats tubular to subfunnelform, 1.8–3 mm, lobes 0.5–1.3 mm.

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

8–10(–14), narrowly lanceolate to oblanceolate, 3.5–7 × 1–2 mm.

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

borne singly or in corymbiform arrays, 6–8 × 3–5 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.

(1.8–)2–2.5 mm;

pappi of (16–)20–30 bristles 1–3(–3.5) mm.

= 34.