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, unbranched, herbaceous, 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.

irregularly pinnate or palmate;

stipules glandlike or absent; short-petiolate to subsessile;

rachis 4–8 mm, sometimes flattened;

leaflets 4–6, often 2 on one side and 2 terminal, blades obovate to elliptic, apex acute to obtuse, surfaces ± villous.

3–20-flowered, capitate.

2–5-flowered.

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

bract absent or unifoliolate, subtending umbel.

ascending, 1–2(–5) 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.

3–4(–5) mm;

calyx 1–1.5(–2.5) mm, tube strigillose to villosulous, lobes subulate;

corolla yellowish, claws shorter than calyx tube, banner implicate-ascending, wings shorter than keel;

style abruptly incurved 90°, strigillose.

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, strongly exserted, widely spreading or reflexed, tawny, arched, turgid, constricted, not septate, linear, 10–15 × 1–2 mm, leathery, apex tapering, long hook-beaked, indehiscent, veined, margins keeled, smooth, strigillose (also on beak).

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

2, olive green, mottled, ± curved, cylindric, smooth.

= 14.