Flora of North America species comparison

erect to prostrate, branched from base.

prostrate, branched.

pinnate;

stipules ovate, 0.3–0.5 cm, margins entire, apex acute;

petiole to 1.5 cm;

lateral leaflet petiolules to 0.5 mm, terminal leaflet stalk 1–1.5 mm;

leaflets 3, blades obovate to elliptic-lanceolate, 1–2 × 0.5–1.5 cm, base cuneate, lateral veins prominent, ± parallel, ascending, margins dentate distally, apex rounded or retuse, surfaces glabrous or sparsely hairy.

palmate;

stipules narrowly triangular, 0.7–1.7 cm, margins entire or finely serrulate, apex usually acute or acuminate, sometimes 2-fid;

petiole 0.3–5 cm;

petiolules to 1 mm;

leaflets 3, blades obovate to obcordate, 0.9–1.6 × 0.7–1.2 cm, base cuneate, veins moderately thickened, margins serrate to weakly so, apex rounded or emarginate, mucronulate, surfaces slightly hairy abaxially, glabrous adaxially.

axillary or terminal, 5–20-flowered, ovoid or globose, 0.5–0.9 × 0.6 cm;

involucres absent.

axillary, 10–20-flowered, depressed-globose or globose, 0.8–1.6 × 0.9–1.6 cm, rachis prolonged beyond flowers;

involucres a narrow rim, or slightly proximally connate bracteoles of proximal flowers, 0.1–0.5 mm.

1–1.5 cm.

2.8–5 cm.

reflexed, 0.2–0.5 mm;

bracteoles a fringe of red setae.

reflexed in fruit, 1–3 mm;

bracteoles linear-triangular, 0.5 mm.

2.8–3.5 mm;

calyx campanulate, 1.5–2 mm, glabrous, veins 5, tube 0.8–1 mm, lobes unequal, longer than tube, adaxial 2 shorter, orifice open;

corolla pale yellow becoming brown, 2.6–3.2 mm, not or slightly ribbed, banner persistent, spatulate, 2.6–3.2 × 2 mm, apex rounded to broadly acute.

5.7–6.7 mm;

calyx tubular, 3.3–6.5 mm, pubescent, veins 10, tube 0.8–1 mm, lobes subequal, narrowly triangular, orifice open;

corolla white or pink, 5.3–6.5 mm, banner obovate, 5.3–6.5 × 2.8–3.8 mm, apex broadly rounded or broadly acute.

stipitate, ellipsoid, 1.5–2 mm, short beaked.

obovoid, 4.3–4.4 mm.

1, yellow or pale brown, ellipsoid, 0.9–1 mm, smooth, glossy.

2, brownish orange or olive-brown, globose or broadly reniform, 1.2–1.7 mm, smooth.

= 16, 28, 32.

= 16.