Flora of North America species comparison

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

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

palmate or irregularly subpinnate;

stipules glandlike;

subsessile to short-petiolate;

rachis 1–4 mm, ± flattened;

leaflets 3–5, blades obovate to oblanceolate, apex usually obtuse, sometimes acute, surfaces sericeous to canescent.

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 or spreading, (2–)10–20 mm, shorter to longer than leaves;

bract absent (reduced to stipules) or unifoliolate, distal.

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.

5–12 mm;

calyx 4–7 mm, tube villous, lobes subulate;

corolla yellow, turning orange-red, claws ± equaling calyx tube, banner ascending to 45°, wings unequal, longer than keel;

style slightly curved or straight, glabrous or finely puberulent.

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, divergent, brown, straight or curved at tip, turgid, slightly constricted, imperfectly septate, linear-oblong to oblong, (10–)18–25 × 1.5–2 mm, leathery, apex short-beaked, dehiscent, smooth, margins smooth, strigillose to glabrate.

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

2–5+, olive brown, mottled, roundish-oblong to angled, smooth, 2-veined.