Flora of North America species comparison

erect to prostrate, branched from base.

erect, aerial stems sparsely 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 lanceolate, 0.7–1.5 cm, margins coarsely spinulose-dentate, apex acuminate;

petiole 1–3 cm;

petiolules to 0.5 mm;

leaflets 3, blades obovate, rhombic, or elliptic, sometimes folded, 0.9–1.5 × 0.5–1.3 cm, base cuneate, veins very thick, margins coarsely spinulose-dentate, apex rounded, long-apiculate, surfaces canescent.

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

involucres absent.

axillary, 5–25-flowered, globose, 2.2–2.5 × 2.3–2.7 cm;

involucres a narrow, papery, irregular rim, to 0.5 mm.

1–1.5 cm.

2–4.5 cm.

reflexed, 0.2–0.5 mm;

bracteoles a fringe of red setae.

reflexed in fruit, 1.5–4 mm;

bracteoles triangular, to 0.2 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.

11–15 mm;

calyx campanulate, 5–11 mm, pilose, veins 10, tube 1.8–2.2 mm, lobes subequal, lanceolate-setiform, orifice open;

corolla creamy white with purplish veins, becoming pinkish purple-tinged, 10.5–13 mm, banner broadly rhombic-ovate or obovate, 10.5–13 × 5–7 mm, apex rounded, slightly emarginate.

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

ovoid, 3–4 mm.

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

1 or 2, brown, mitten-shaped, 1.5–2 mm, smooth.

= 16, 28, 32.