Flora of North America species comparison

1–20+, prostrate or decumbent to ascending, branched, herbaceous, slender, or ± woody, leafy, sometimes congested at tips.

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

irregularly pinnate to subpalmate;

stipules glandlike; short-petiolate;

rachis 2–10 mm, ± flattened;

leaflets (3 or)4 or 5(–7), blades obovate to elliptic-lanceolate or ovate, apex acute, surfaces densely sericeous.

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.

3–20-flowered, capitate.

1–3(or 4)-flowered.

ascending, 0–6(–40) mm, shorter to longer than leaves;

bract absent or unifoliolate, subtending umbel.

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

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

6–12 mm;

calyx 5–7 mm, tube densely villous, lobes subulate, shorter than or equal to tube;

corolla yellow to orange, turning red or brown, claws shorter than calyx tube, banner implicate-ascending, wings ± equaling keel;

style curved, 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, included to moderately (–strongly) exserted, ascending to divergent, reddish brown, arched, turgid, not constricted, not septate, lanceoloid, 6–10 × 1–2 mm, leathery, apex short-beaked, tapering, curved or geniculate, indehiscent, smooth, margins keeled smooth, glabrate to silky.

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].

1 (or 2), tawny, mottled, curved-oblong, elongate, smooth.

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

= 14.