Flora of North America species comparison

4–28 cm, glabrous or downy, hairs to 1 mm, sometimes septate-glandular.

7–40 cm, glabrate, sparsely downy, or pilose proximally, downy or pilose distally.

basal 3–13 cm, blade pinnate to interruptedly pinnate, major leaflets 13–26, alternating with 0–14 minor ones, terminal leaflet slightly larger than major laterals;

cauline 0.7–2 cm, stipules adnate to leaf, indistinguishable from pair of lobes, blade bractlike, not resembling basal, alternate, simple, pinnatifid to 3-fid.

basal 5–15 cm, blade strongly lyrate-pinnate, major leaflet 1, minor leaflets 4–10, terminal leaflet much larger than minor laterals;

cauline 0.8–1.7(–2.5) cm, stipules not evident, blade bractlike, not resembling basal, simple, 3-fid.

1–3(–4)-flowered.

1–2(–4)-flowered.

woolly, sometimes glandular.

densely downy, usually eglandular.

erect;

epicalyx bractlets 1.5–7 mm;

hypanthium green, slightly purple-tinged to strongly purple;

sepals erect to erect-spreading, 3–10 mm;

petals spreading, yellow, obovate to nearly orbiculate, 5–12(–17) mm, longer than sepals, apex broadly rounded to irregularly emarginate.

erect;

epicalyx bractlets 2–3 mm;

hypanthium green;

sepals spreading, 4–7 mm;

petals spreading, yellow, obcordate, nearly orbiculate, or broadly ovate, 9–13 mm, nearly 2 times sepals, apex broadly rounded, emarginate, or irregularly erose.

sessile, glabrous.

sessile, glabrous.

wholly persistent, not geniculate-jointed, 2–5(–10) mm, apex not hooked, glabrous throughout or pilose only at base.

wholly persistent, not geniculate-jointed, 6–9 mm, apex not hooked, pilose in basal 1/3, eglandular.

= 56.

= 42.