Flora of North America species comparison

8–40 cm, sparsely hirsute proximally, puberulent throughout.

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

basal 5–25 cm, blade strongly lyrate-pinnate, sometimes simple, major leaflet 1, minor leaflets 1–7, terminal leaflet much larger than minor laterals;

cauline 1.5–4.5 cm, stipules not evident, blade bractlike, not resembling basal, simple.

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.

1–2(–4)-flowered.

1–3(–4)-flowered.

downy, hirsute, eglandular.

woolly, sometimes glandular.

erect;

epicalyx bractlets 2–6 mm;

hypanthium green or green with slight maroon tinge;

sepals erect-spreading, 6–11 mm;

petals spreading, yellow, obcordate-obdeltate to nearly orbiculate, 9–13 mm, longer than sepals, apex broadly and shallowly emarginate.

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.

sessile, glabrous.

sessile, glabrous.

wholly persistent, not geniculate-jointed, 9–14 mm, apex not hooked, pilose in basal 3/4, eglandular.

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

= 42.

= 56.