Flora of North America species comparison

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

20–70 cm, pilose or sparsely pilose, hairs septate.

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 4–27 cm, blade simple or pinnate, leaflets 3–11, terminal leaflet larger;

cauline 2–7 cm, stipules ± free, 8–25 × 7–12 mm, blade pinnate to 3-foliolate.

1–3(–4)-flowered.

3–13-flowered.

woolly, sometimes glandular.

glandular-downy, becoming glabrate in fruit.

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 absent;

hypanthium green;

sepals reflexed, 1–3 mm;

petals spreading, yellow to cream, oblong to elliptic, sometimes obovate, 1–2 mm, equal to or shorter than sepals, apex rounded.

sessile, glabrous.

on 3–7 mm stipes, glabrous.

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

geniculate-jointed, proximal segment persistent, 1.5–3 mm, apex hooked, nearly glabrous except for few septate-glandular hairs, distal segment deciduous, 0.7–1 mm, nearly glabrous except for short hairs.

= 56.

= 42.