Flora of North America species comparison

1–30+, ascending, branched (distal branches ± flexuous and herbaceous), stiff (± woody), remotely leafy.

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

irregularly pinnate or palmate;

stipules evanescent, glandlike, ovoid-deltoid; short-petiolate or sessile;

rachis 0–5 mm, not flattened;

leaflets 3–5, blades obovate to oblanceolate, apex obtuse to emarginate, surfaces strigose.

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.

1–4(or 5)-flowered.

3–8-flowered.

ascending to erect, slender, often flexuous, 20–60(–130) mm, much longer than leaves;

bract absent or unifoliolate, subtending umbel.

ascending, 1–5 mm, shorter than leaves;

bract unifoliolate, distal.

12–20(–24) mm;

calyx 6.5–10 mm, tube ± densely strigillose, lobes subulate, abaxial pair sometimes connate behind banner;

corolla yellow, sometimes ± suffused with red or orange, banner often red-backed, claws ± equaling calyx tube, banner remaining implicate, ± ascending to 45°, wings longer than keel;

style corneously thickened and laterally grooved proximally, straight, 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, exserted, erect or divergent, yellow-brown to reddish, straight, turgid, not constricted, not septate, linear-oblong to oblong, 20–40(–45) × 3–5 mm, leathery, apex short-beaked, dehiscent, smooth, margins smooth, keeled, usually glabrate, rarely sparsely strigillose.

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.

18–30, light brown, ± mottled, subglobose, finely granulose or papillose.

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

= 14.