Flora of North America species comparison

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

1–10+, procumbent to ascending, much branched, stiff, sometimes ± woody, 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.

subpalmate;

stipules glandlike;

subsessile to short-petiolate;

rachis 1–4 mm, flattened;

leaflets usually 3, blades obovate to oblanceolate, apex usually acute, sometimes obtuse to emarginate, surfaces canescent to strigose.

3–9(–11)-flowered.

1–3(–5)-flowered.

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

bract 1(–3)-foliolate, distal.

ascending, 0–3 mm, shorter than leaves;

bract absent.

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.

6–12 mm;

calyx 2–6 mm, tube ± densely strigose, lobes triangular or subulate;

corolla yellow or with red, claws scarcely to much longer than calyx tube, banner implicate-ascending, wings longer than banner and 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.

persistent, exserted, reflexed, green to pale reddish brown, straight to ± curved (initially), turgid, not or slightly constricted, not septate, linear-oblong, 10–16 × 1.5–2 mm, leathery, apex tapering, short-beaked, indehiscent, transverse-ridged, margins slightly keeled, smooth, glabrate to ± densely strigillose.

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

2 or 3+, dull yellowish brown, not mottled, elongate-oblong, smooth.