Flora of North America species comparison

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

1–10+, decumbent to ascending or erect, branched sparsely, stiff, leafy, base without persistent leaves.

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.

palmate, homomorphic;

stipules ovate;

sessile;

rachis absent;

leaflets (2–)4–6, blades linear-oblanceolate to oblanceolate, apex acute to obtuse, surfaces villous to strigose.

1–3-flowered.

(1 or)2–5(or 6)-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 to deflexed, curved to erect, (10–)20–50(–80) mm, longer 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.

8–15 mm;

calyx 5–7.5 mm, tube villous, lobes subulate;

corolla yellow with red-backed banner, often suffused with red, turning orange, claws shorter than calyx tube, banner recurved ca. 45°, pandurate, wings longer than keel (nearly equaling banner);

style straight, 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, spreading or deflexed, reddish to grayish brown, ± straight, turgid, not constricted, incompletely septate, linear-oblong, (14–)25–35 × 1.5–3.5 mm, leathery, apex short-beaked, dehiscent, smooth, lustrous, margins keeled, strigillose or glabrous.

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

(1–)3–6, olive green to dark brown, mottled, oblong, smooth.