Flora of North America species comparison

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

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

palmate, homomorphic;

stipules ovate;

sessile;

rachis absent;

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

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 or)2–5(or 6)-flowered.

(1–)3–12-flowered.

ascending to deflexed, curved to erect, (10–)20–50(–80) mm, longer than leaves;

bract 1–3-foliolate, subtending umbel.

ascending, 3–15(–30 proximally) mm, shorter than leaves;

bract 1–3-foliolate, subtending umbel.

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.

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, 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.

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.

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

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