Flora of North America species comparison

1–5+, decumbent to erect, branched, herbaceous, often striate, leafy.

1–20+, procumbent, branched, wiry, slender, leafy.

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.

irregularly pinnate to subpalmate;

stipules glandlike;

subsessile to petiolate;

rachis (1–)2–10(–15) mm, not or ± flattened;

leaflets 3–5, blades obovate to elliptic, apex acute to obtuse, surfaces villous, hairs curved.

3–9(–11)-flowered.

(1–)3–12-flowered.

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

bract 1(–3)-foliolate, distal.

ascending, 3–15(–30 proximally) mm, shorter than leaves;

bract 1–3-foliolate, subtending umbel.

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.

4.5–8(–10) mm;

calyx (3.5–)4–7 mm, tube sparsely villosulous, lobes subulate, subequal;

corolla yellow, reddening, usually drying dark, claws shorter than calyx tube, banner implicate-ascending, wings longer than keel;

style curved, glabrous.

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.

deciduous with calyx, exserted, declined or deflexed, tawny, strongly arched, turgid, not constricted, not septate, ovoid-ellipsoid, 6–10 ×1.8–2.2 mm, leathery, apex long, tapering to curved, slender beak, indehiscent, veined, margins keeled, rugose, strigillose.

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

1 or 2 (or 3), brown, not mottled, narrowly oblong-reniform, smooth.