Flora of North America species comparison

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

1–20+, usually procumbent (when small, unbranched, erect or ascending), diffusely 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.

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.

1–3-flowered.

1-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, 0–2 mm, shorter than leaves;

bract absent.

(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.

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, 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, 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).

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

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

= 12.