Flora of North America species comparison

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

1–20+, prostrate to ascending, branched, ± woody, wiry or stout, often remotely 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 subpalmate;

stipules glandlike;

sessile or subsessile to short-petiolate;

rachis 0–9 mm, sometimes flattened;

leaflets 3–5, blades obovate to oblanceolate, apex obtuse to acute, or mucronulate, surfaces ± strigillose.

1–3-flowered.

(1 or)2–8-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, slender, sometimes secondarily branched, 1–25 mm, usually shorter, sometimes longer, than leaves;

bract absent or (when pedunculate) 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.

6–8 mm;

calyx 3–5 mm, tube strigillose, lobes triangular to deltate;

corolla yellow, tinged red, fading orange, claws longer than calyx tube, banner implicate-ascending, wings shorter than keel (and other petals);

style gradually or abruptly 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, moderately to well exserted, ascending to divergent, tawny to brown, strongly arched, curved to 90°, sometimes nearly straight, turgid, not constricted, not septate, linear-oblong, 6–8 × 1–2 mm, leathery, apex beak recurved 80–360° or irregularly contorted, nearly as long as body, indehiscent, transversely ridged, margins keeled, rugose, strigillose or glabrous.

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

1 or 2, olive to reddish brown, mottled, elongate, curved, smooth.