Flora of North America species comparison

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

1–20+, procumbent, branched, wiry, slender, 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.

irregularly pinnate to subpalmate;

stipules glandlike;

subsessile to petiolate;

rachis (1–)2–10(–15) mm, not or ± flattened;

leaflets 3–5, blades obovate to elliptic, apex acute to obtuse, surfaces villous, hairs curved.

1–3-flowered.

(1–)3–12-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, 3–15(–30 proximally) mm, shorter than leaves;

bract 1–3-foliolate, subtending umbel.

(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.

4.5–8(–10) mm;

calyx (3.5–)4–7 mm, tube sparsely villosulous, lobes subulate, subequal;

corolla yellow, reddening, usually drying dark, claws shorter than calyx tube, banner implicate-ascending, wings longer than 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.

deciduous with calyx, exserted, declined or deflexed, tawny, strongly arched, turgid, not constricted, not septate, ovoid-ellipsoid, 6–10 ×1.8–2.2 mm, leathery, apex long, tapering to curved, slender beak, indehiscent, veined, margins keeled, rugose, strigillose.

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

1 or 2 (or 3), brown, not mottled, narrowly oblong-reniform, smooth.