Flora of North America species comparison

1–20+, procumbent or decumbent to ascending, branched basally, herbaceous, slender, leafy.

1–10+, decumbent to ascending, branched, herbaceous, sometimes slender, leafy, base with or without persistent leaves.

irregularly pinnate;

stipules glandlike;

subsessile;

rachis 3–20 mm, flattened;

leaflets 4–10, blades unequal, obovate to oblanceolate to linear-oblong or oblong, apex acute to obtuse or truncate, surfaces ± densely tomentose to glabrate.

irregularly pinnate to subpalmate with a terminal trefoil, often dimorphic (proximal with smaller, rounder leaflets);

stipules glandlike;

subsessile to short-petiolate;

rachis (1.5–)5–10 mm, flattened;

leaflets (3 or)4 or 5(–7)[–13], blades obovate (widely obovate) to linear-oblanceolate [elliptic], apex emarginate or obtuse to acute, surfaces strigose to villous.

1–3-flowered.

1–3(or 4)-flowered.

ascending or reflexed, upturned, 3–25 mm, shorter to longer than leaves (often elongated in fruit);

bract absent or 1–3-foliolate, usually subtending umbel.

ascending, 10–70(–90) mm, longer than leaves;

bract absent or 1–3[–5]-foliolate, subtending umbel.

(5–)6–10(–12) mm;

calyx 3–5.5 mm, tube ± sparsely strigillose or glabrous, lobes subulate;

corolla yellow (sometimes banner orangish abaxially), turning orange or reddish, claws ± equaling calyx tube, banner implicate-ascending or remaining closely implicate, wings longer than keel;

style corneously thickened, marked by color, straight, puberulent or glabrous.

10–16(–20) mm;

calyx 5–8.5[–10] mm, tube villous, lobes lanceolate to subulate;

corolla yellow, turning orange or red [banner red, keel and wings white], claws ± equaling calyx tube, banner ascending to 45°, wings longer than keel;

style straight, glabrous.

persistent, exserted, erect or divergent, brown, straight to ± curved distally, compressed, not or slightly constricted, incompletely septate, linear-oblong, 10–35 × 2–3 mm, thinly leathery, apex initially short-beaked, dehiscent, smooth, margins smooth, thin, glabrous or ± strigose.

persistent, exserted, erect to spreading, green or purplish brown [ashy], straight or ± curved, compressed, slightly constricted, imperfectly septate, linear-oblong, 17–35 × 2–3 mm, leathery, apex short-beaked, dehiscent, smooth, margins keeled, strigillose [glabrate].

5–10, greenish to brown, ± mottled, ovoid to cuboid or globose, rugulose or granular.

10–18, dark brown, ± mottled, oblong, dull, ± compressed, smooth.

= 14.