Flora of North America species comparison

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

1–10+, procumbent, much branched, wiry or ± woody, leafy.

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.

irregularly subpalmate;

stipules glandlike;

subessile to petiolate;

rachis 2–10 mm, sometimes flattened;

leaflets 4–6, blades ovate to obovate, apex ± obtuse to acute, surfaces sparsely to densely pilose.

1 or 2-flowered.

3–8-flowered.

± sessile;

bract absent.

ascending, 1–5 mm, shorter than leaves;

bract 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.

4–6(–7) mm;

calyx 2–4 mm, tube usually villous, lobes setaceous;

corolla yellow to reddish, dark-tipped, claws shorter than or equaling calyx tube, banner implicate-ascending, wings equaling to longer than keel (and other petals);

style geniculate 90° or incurved, 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.

deciduous with calyx, exserted, ascending to divergent, tawny, straight to strongly arched, turgid, not constricted, not septate, linear-oblong, 3–5 × 1–2 mm, leathery, apex abruptly tapering to long, curved beak, indehiscent, smooth, margins indistinctly keeled, smooth, villous.

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

1 or 2, olive green to brownish green, not mottled, straight to curved, narrowly ellipsoid, smooth.

= 12.