Flora of North America species comparison

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

1–20+, procumbent to ascending, branched proximally, stiff, leafy, base without persistent leaves.

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.

palmate, often ± dimorphic (proximal with broader leaflets, distal with filiform ones), sometimes subtending axillary clusters of filiform leaflets;

stipules ovate;

proximal short-petiolate, medial and distal subsessile or sessile;

rachis absent;

leaflets 3–6, blades obovate (proximal) or oblanceolate to linear (distal), apex usually acute, sometimes obtuse, surfaces ± densely villous to strigose.

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.

ascending to deflexed, 0–30 mm, usually longer, sometimes shorter, 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.

10–15(–18) mm;

calyx 5–7.5 mm, tube villous to strigose, lobes subulate to setaceous;

corolla yellow with back of banner red, turning reddish, claws shorter than calyx tube, banner implicate-ascending, wings longer than keel;

style straight, 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, divergent or declined, reddish or grayish brown, straight, turgid, slightly constricted, incompletely septate, linear-oblong, (17–)20–35 × 1.5–3(–3.5) mm, leathery, apex short-beaked, dehiscent, smooth, margins smooth, thickened, sparsely strigose to glabrate.

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

4–7, greenish to dark reddish brown, ± mottled, oblong, smooth.

= 14.