Flora of North America species comparison

1(–5), decumbent to erect, apically or basally coarse-branched, herbaceous, leafy.

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

subpinnate, pinnate, or palmate;

stipules glandlike or absent; petiolate;

rachis 5–12 mm, flattened;

leaflets 2–4, often 1 or 2 on one side and 2 terminal, blades elliptic to obovate (lateral sometimes asymmetric), margins denticulate or entire, apex acute to obtuse, surfaces hirsute.

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-flowered.

(1–)3–12-flowered.

± sessile;

bract absent.

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

bract 1–3-foliolate, subtending umbel.

5–8 mm;

calyx 3–5 mm, tube hirsute or glabrous, lobes subulate, ± denticulate;

corolla cream-white to pale yellow, banner purple-tinged, keel tip yellowish, claws shorter to slightly longer than calyx tube, banner ascending, wings ± equaling keel, with deep, triangular auricle;

style curved, 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, solitary or paired, exserted, erect or spreading, tawny, straight, compressed, slightly constricted, not septate, widely oblong, 8–20 × 3 mm, leathery, apex abruptly downward angled and curved, dehiscent, smooth, margins often undulate-verrucose, strigose 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.

(2 or)3(or 4), gray, faintly mottled, asymmetrically ± angular-obovoid, flattened, smooth.

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

= 12.