Flora of North America species comparison

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

1–20+, procumbent to ascending, branched, ± woody, wiry, remotely leafy, deciduous.

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 or absent;

subsessile;

rachis absent;

leaflets 3, blades elliptic, apex obtuse, surfaces ± strigillose.

3–9(–11)-flowered.

1(or 2)-flowered.

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

bract 1(–3)-foliolate, distal.

0–3 mm, shorter than leaves;

bract absent (reduced to stipule), distal.

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 mm;

calyx 2.5–3 mm, tube ± strigillose, lobes subulate;

corolla usually yellow, sometimes ± pinkish or orangish, claws shorter than calyx tube, banner implicate-ascending, wings slightly shorter than to ± equaling keel;

style upcurved, 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, ascending to deflexed, tawny, curved, turgid, not or slightly constricted, not septate, oblong, (5–)6–9 × 1–1.5 mm, leathery, apex beaked, indehiscent, finely veined, margins smooth, sparsely strigillose to glabrate.

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

1 or 2, greenish brown, not mottled, straight or ± curved, narrowly cylindric, smooth.

= 14.