Flora of North America species comparison

1–20+, procumbent to low-ascending, branched, herbaceous, leafy.

1–30+, ascending, branched (distal branches ± flexuous and herbaceous), stiff (± woody), remotely leafy.

pinnate or palmate;

stipules glandlike, sometimes absent;

subsessile or sessile;

rachis 4–10 mm, flattened;

leaflets (3 or)4(or 5), usually 2 on one side and 2 terminal, blades elliptic to obovate(–oblanceolate), apex usually obtuse, sometimes acute, surfaces villous to pubescent.

irregularly pinnate or palmate;

stipules evanescent, glandlike, ovoid-deltoid; short-petiolate or sessile;

rachis 0–5 mm, not flattened;

leaflets 3–5, blades obovate to oblanceolate, apex obtuse to emarginate, surfaces strigose.

1-flowered.

1–4(or 5)-flowered.

± sessile;

bract absent.

ascending to erect, slender, often flexuous, 20–60(–130) mm, much longer than leaves;

bract absent or unifoliolate, subtending umbel.

5–9 mm;

calyx 3–6 mm, accrescent, tube villous, lobes lanceolate;

corolla pale yellow, reddish-tipped, turning red, claws shorter than calyx tube, banner horizontal to ascending to 90°, wings ± equaling keel;

style curved, glabrous.

12–20(–24) mm;

calyx 6.5–10 mm, tube ± densely strigillose, lobes subulate, abaxial pair sometimes connate behind banner;

corolla yellow, sometimes ± suffused with red or orange, banner often red-backed, claws ± equaling calyx tube, banner remaining implicate, ± ascending to 45°, wings longer than keel;

style corneously thickened and laterally grooved proximally, straight, glabrous.

persistent, exserted, erect, brown or tawny, straight, compressed, slightly constricted, not septate, oblong, 6–12(–14) × 3–4 mm, stiffly papery, apex obtuse, dehiscent, smooth, margins smooth, thin, villous.

persistent, exserted, erect or divergent, yellow-brown to reddish, straight, turgid, not constricted, not septate, linear-oblong to oblong, 20–40(–45) × 3–5 mm, leathery, apex short-beaked, dehiscent, smooth, margins smooth, keeled, usually glabrate, rarely sparsely strigillose.

(2 or)3(–5), tan to dark brown or blackish, faintly mottled, lenticular-elliptic (asymmetric), smooth.

18–30, light brown, ± mottled, subglobose, finely granulose or papillose.

= 12.

= 14.