Flora of North America species comparison

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

1–10+, procumbent to ascending, much branched, stiff, sometimes ± woody, leafy.

irregularly pinnate;

stipules glandlike;

subsessile;

rachis 3–20 mm, flattened;

leaflets 4–10, blades unequal, obovate to oblanceolate to linear-oblong or oblong, apex acute to obtuse or truncate, surfaces ± densely tomentose to glabrate.

subpalmate;

stipules glandlike;

subsessile to short-petiolate;

rachis 1–4 mm, flattened;

leaflets usually 3, blades obovate to oblanceolate, apex usually acute, sometimes obtuse to emarginate, surfaces canescent to strigose.

1–3-flowered.

1–3(–5)-flowered.

ascending or reflexed, upturned, 3–25 mm, shorter to longer than leaves (often elongated in fruit);

bract absent or 1–3-foliolate, usually subtending umbel.

ascending, 0–3 mm, shorter than leaves;

bract absent.

(5–)6–10(–12) mm;

calyx 3–5.5 mm, tube ± sparsely strigillose or glabrous, lobes subulate;

corolla yellow (sometimes banner orangish abaxially), turning orange or reddish, claws ± equaling calyx tube, banner implicate-ascending or remaining closely implicate, wings longer than keel;

style corneously thickened, marked by color, straight, puberulent or glabrous.

6–12 mm;

calyx 2–6 mm, tube ± densely strigose, lobes triangular or subulate;

corolla yellow or with red, claws scarcely to much longer than calyx tube, banner implicate-ascending, wings longer than banner and keel;

style curved, glabrous.

persistent, exserted, erect or divergent, brown, straight to ± curved distally, compressed, not or slightly constricted, incompletely septate, linear-oblong, 10–35 × 2–3 mm, thinly leathery, apex initially short-beaked, dehiscent, smooth, margins smooth, thin, glabrous or ± strigose.

persistent, exserted, reflexed, green to pale reddish brown, straight to ± curved (initially), turgid, not or slightly constricted, not septate, linear-oblong, 10–16 × 1.5–2 mm, leathery, apex tapering, short-beaked, indehiscent, transverse-ridged, margins slightly keeled, smooth, glabrate to ± densely strigillose.

5–10, greenish to brown, ± mottled, ovoid to cuboid or globose, rugulose or granular.

2 or 3+, dull yellowish brown, not mottled, elongate-oblong, smooth.