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+, procumbent to ascending, much branched, stiff, sometimes ± woody, leafy.

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.

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.

3–20-flowered, capitate.

1–3(–5)-flowered.

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

bract absent or unifoliolate, subtending umbel.

ascending, 0–3 mm, shorter than leaves;

bract absent.

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.

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, 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, 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.

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

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