Flora of North America species comparison

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

1–20+, procumbent or decumbent, branched, herbaceous, leafy, proximally covered by small, 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.

pinnate to subpalmate (distal);

stipules conic;

proximal short-petiolate or sessile, distal subsessile to short-petiolate;

rachis 0–4 mm, sometimes flattened;

leaflets (3 or)4 or 5(or 6), blades obovate to oblanceolate (proximal ± orbiculate), apex acute to rounded, surfaces villous to tomentose.

1 or 2-flowered.

1–3(–5)-flowered.

± sessile;

bract absent.

ascending or reflexed, upturned, (5–)20–50 mm, longer than leaves;

bract absent (reduced to gland) or 1(–3)-foliolate, 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–)13–22 mm;

calyx 4.3–7 mm, tube densely villous, lobes subulate;

corolla cream to orange-yellow, rose-tinted, claws shorter than calyx tube, banner obliquely ascending, wings longer than banner and keel, auriculate, spurred;

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, erect, reddish brown, straight, turgid, not constricted, imperfectly septate, linear-oblong, 15–30 × (2–)2.5–3 mm, ± leathery, apex short-beaked, dehiscent, smooth, margins smooth, strigillose.

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

5–8, olive green to brown, ± mottled, oblong, smooth.

= 12.

= 14.