Flora of North America species comparison

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

1–20+, usually procumbent (when small, unbranched, erect or ascending), diffusely branched proximally, herbaceous, 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;

stipules glandlike or absent; petiolate;

rachis 5–15 mm, flattened;

leaflets (3 or)4(or 5), usually 2 on one side and 2 terminal, blades elliptic to obovate (lateral sometimes asymmetric), apex usually obtuse, sometimes acute, surfaces sparsely long-ciliate, pubescent.

1 or 2-flowered.

1-flowered.

± sessile;

bract absent.

ascending, 0–2 mm, shorter than leaves;

bract absent.

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.

5–9 mm;

calyx 2.5–5 mm, tube pubescent to villous, lobes lanceolate;

corolla yellow, turning red, claws shorter than calyx tube, banner implicate-ascending, with irregular or inrolled margins, wings shorter 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.

persistent, exserted, erect or spreading, tawny to brown, straight, compressed, slightly constricted, ± septate, oblong, 10–18 × 2.2–3 mm, thinly leathery, apex abruptly downward angled and curved, dehiscent, smooth, margins smooth, thin, pubescent (to glabrate).

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

3–7, olive green to brown, not mottled, asymmetric-reniform, smooth.

= 12.

= 12.