Flora of North America species comparison

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

1–5+, decumbent to erect, branched, herbaceous, often striate, 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 pinnate;

stipules glandlike, conic; petiolate or sessile;

rachis 2–3.5(–5.5) mm, not flattened;

leaflets 7–9(–12), blades usually elliptic to obovate, sometimes ovate, apex acute to obtuse, surfaces sparsely to densely puberulent or villosulous to strigillose.

1–4(or 5)-flowered.

3–9(–11)-flowered.

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

bract absent or unifoliolate, subtending umbel.

ascending or spreading, 10–80 mm, longer than leaves;

bract 1(–3)-foliolate, 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.

12–25 mm;

calyx (4.5–)5.5–10 mm, tube villosulous, lobes subulate;

corolla greenish white, white or yellow, fading to rose or reddish, claws shorter than calyx tube, banner ascending 45–90°, wings longer than banner and keel;

style nearly straight or basally curved, 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.

persistent, exserted, brown, linear-oblong, straight, turgid, sometimes slightly constricted, incompletely septate, 25–42(–70) × 2–3 mm, leathery, apex short hook-beaked, dehiscent, smooth, margins smooth, thickened, glabrate.

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

5–9, olive to reddish brown, mottled, broadly ovoid, smooth.

= 14.