Flora of North America species comparison

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

1–10+, erect to procumbent, branched proximally, herbaceous, 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.

pinnate;

stipules glandlike;

subsessile to short-petiolate;

rachis 0.5–3(–4) mm, not flattened;

leaflets (1–)3(–5), blades obovate, ovate, or elliptic to lanceolate, margins denticulate or entire, apex acute, surfaces sparsely appressed-hairy.

1–3-flowered.

1(or 2)-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.

in distal axils, ascending, 3–25 mm, longer than leaves;

bract unifoliolate, distal.

(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–)5–9 mm;

calyx (2.5–)3–6.5 mm, tube pilose, lobes linear-lanceolate, accrescent;

corolla whitish or cream, turning pink or salmon, banner rose-striate, keel tip yellow, claws shorter than calyx tube, banner implicate-ascending to erect, wings ± equaling keel;

style abruptly angled upward 45°, 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 pendent, brown, straight or ± curved, compressed, slightly constricted, not septate, linear-oblong to narrowly oblong, (15–)20–30(–40) × (1.5–)2–2.5 mm, thinly leathery, apex abruptly downward angled and curved, dehiscent, smooth, margins smooth, thickened, glabrous.

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

(3–)5–8, olive to light brown, often black-mottled, oblong, smooth.