Flora of North America species comparison

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

1–20+, procumbent to ascending, branched, ± woody, wiry, remotely leafy, deciduous.

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.

subpalmate;

stipules glandlike or absent;

subsessile;

rachis absent;

leaflets 3, blades elliptic, apex obtuse, surfaces ± strigillose.

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.

0–3 mm, shorter than leaves;

bract absent (reduced to stipule), 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 mm;

calyx 2.5–3 mm, tube ± strigillose, lobes subulate;

corolla usually yellow, sometimes ± pinkish or orangish, claws shorter than calyx tube, banner implicate-ascending, wings slightly shorter than to ± equaling keel;

style upcurved, 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, ascending to deflexed, tawny, curved, turgid, not or slightly constricted, not septate, oblong, (5–)6–9 × 1–1.5 mm, leathery, apex beaked, indehiscent, finely veined, margins smooth, sparsely strigillose to glabrate.

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

1 or 2, greenish brown, not mottled, straight or ± curved, narrowly cylindric, smooth.

= 14.