Flora of North America species comparison

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

50–84 cm, sparsely hirsute proximally, hirsute 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 14–30 cm, blade interruptedly lyrate-pinnate, major leaflets 1–5, mixed with 2–5 minor ones, terminal leaflet slightly to much larger than major laterals;

cauline 4–12 cm, stipules ± free, 7–20 × 4–8 mm, blade pinnate, 3-foliolate, or simple and 3-lobed.

1–3(–4)-flowered.

5–15-flowered.

woolly, sometimes glandular.

densely pilose, some hairs septate-glandular.

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.

nodding;

epicalyx bractlets 2.5–3 mm;

hypanthium green with purple tinge at base to greenish maroon;

sepals erect to erect-spreading, 5–8 mm;

petals erect, white, pink, or lavender, spatulate-obovate, 5–7 mm, ± equal to sepals, apex rounded, truncate, or shallowly emarginate.

sessile, glabrous.

sessile, densely bristly.

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

geniculate-jointed, proximal segment persistent, 2–4.5 mm, apex hooked, septate-glandular hairs on basal 1/2, distal segment very tardily deciduous, 5–8 mm, pilose except apical 1–2 mm, with some glandular hairs.

= 56.