Flora of North America species comparison

1(–5), decumbent to erect, apically or basally coarse-branched, herbaceous, leafy.

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

subpinnate, pinnate, or palmate;

stipules glandlike or absent; petiolate;

rachis 5–12 mm, flattened;

leaflets 2–4, often 1 or 2 on one side and 2 terminal, blades elliptic to obovate (lateral sometimes asymmetric), margins denticulate or entire, apex acute to obtuse, surfaces hirsute.

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 or 2-flowered.

1 or 2-flowered.

± sessile;

bract absent.

ascending to deflexed, 0–30 mm, usually longer, sometimes shorter, than leaves;

bract absent or (when pedunculate) unifoliolate, distal.

5–8 mm;

calyx 3–5 mm, tube hirsute or glabrous, lobes subulate, ± denticulate;

corolla cream-white to pale yellow, banner purple-tinged, keel tip yellowish, claws shorter to slightly longer than calyx tube, banner ascending, wings ± equaling keel, with deep, triangular auricle;

style curved, 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, solitary or paired, exserted, erect or spreading, tawny, straight, compressed, slightly constricted, not septate, widely oblong, 8–20 × 3 mm, leathery, apex abruptly downward angled and curved, dehiscent, smooth, margins often undulate-verrucose, strigose or glabrous.

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.

(2 or)3(or 4), gray, faintly mottled, asymmetrically ± angular-obovoid, flattened, smooth.

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

= 12.

= 14.