Flora of North America species comparison

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

1–20+, procumbent or decumbent to diffusely ascending, branched, herbaceous, slender, 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.

palmate or irregularly subpinnate;

stipules glandlike;

subsessile to short-petiolate;

rachis 1–4 mm, ± flattened;

leaflets 3–5, blades obovate to oblanceolate, apex usually obtuse, sometimes acute, surfaces sericeous to canescent.

1-flowered.

1–3(–5)-flowered.

± sessile;

bract absent.

ascending or spreading, (2–)10–20 mm, shorter to longer than leaves;

bract absent (reduced to stipules) or unifoliolate, distal.

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.

5–12 mm;

calyx 4–7 mm, tube villous, lobes subulate;

corolla yellow, turning orange-red, claws ± equaling calyx tube, banner ascending to 45°, wings unequal, longer than keel;

style slightly curved or straight, glabrous or finely puberulent.

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, divergent, brown, straight or curved at tip, turgid, slightly constricted, imperfectly septate, linear-oblong to oblong, (10–)18–25 × 1.5–2 mm, leathery, apex short-beaked, dehiscent, smooth, margins smooth, strigillose to glabrate.

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

2–5+, olive brown, mottled, roundish-oblong to angled, smooth, 2-veined.

= 12.