Flora of North America species comparison

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

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

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 or 2-flowered.

(1 or)2–8-flowered.

± sessile;

bract absent.

ascending, slender, sometimes secondarily branched, 1–25 mm, usually shorter, sometimes longer, 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.

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, 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, 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.

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

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

= 12.