Flora of North America species comparison

erect, unbranched or profusely branched.

decumbent or ascending, branched.

palmate;

stipules oblanceolate, 0.9–1.5 cm, margins entire, apex acuminate or cuspidate;

petiole 0.8–1 cm;

petiolules 0–1 mm;

leaflets 3, blades obovate to elliptic-lanceolate, 1–2.8 × 0.6–0.8 cm, base cuneate, lateral veins prominent, ± parallel, ascending, margins denticulate, apex acute, truncate, or retuse, mucronate, surfaces glabrous or sparsely hairy.

palmate;

stipules lanceolate to ovate, 0.4–1.8 cm, margins lacerate, apex acute to acuminate;

petiole 0.5–6 cm;

petiolules to 1 mm;

leaflets 3, blades broadly elliptic to broadly obovate, 0.4–2.5 × 0.4–1.5 cm, base cuneate, veins moderately thickened, margins dentate-serrulate, apex rounded or truncate, often retuse, surfaces glabrous.

axillary or terminal, 20–80-flowered, usually ovoid-cylindric, sometimes globose, 1.2–2 × 1.3 cm;

involucres absent.

axillary, 10–25-flowered, subglobose or globose, 1–1.8 × 1–1.8 cm;

involucres flattened or bowl-shaped, 4–7 mm, incised 1/2 their length, when folded, not hiding flowers except proximally, lobes 5–12, dentate-lacerate, spinulose.

2–5 cm.

1–2 cm.

reflexed, 0.3–0.6 mm;

bracteoles a fringe of red setae.

straight, to 1 mm;

bracteoles absent.

7–8 mm;

calyx campanulate, 2–2.5 mm, glabrous, veins 5, tube 0.8–1 mm, lobes unequal, adaxial deltate, 0.6–0.9 mm, 1/2 length of abaxial, abaxial linear, orifice open;

corolla golden yellow becoming brown, 5–6 mm, banner persistent, obovate, boat-shaped, 4–4.5 × 2.4–2.6 mm, apex emarginate.

8–10 mm;

calyx campanulate-tubular, not slit between adaxial lobes, 5–7 mm, glabrous, veins 20, tube 1.9–2.4 mm, lobes unequal, 3-fid or laciniate, often appearing 7+-lobed, orifice open;

corolla pink or pale purple, 8–9 mm, banner elliptic, 8–9 × 2–3 mm, apex retuse.

stipitate, oblong, 3–3.5 mm, longer than calyx.

ellipsoid, 3.5–4 mm.

1, pale yellow-green, ovoid, 1–1.2 mm, smooth, glossy.

2, dark brown, mottled, ovoid or reniform, 1.7–1.9 mm, smooth.

= 14, 16.