Flora of North America species comparison

erect to prostrate, branched from base.

densely mat-forming, short-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 ovate or lanceolate, 0.5–1 cm, margins entire or lobed, apex acute or acuminate;

petiole 0.3–30 cm, pubescent;

petiolules 0.2 mm;

leaflets 3, blades oblanceolate, 0.3–1.6 × 0.1–0.7 cm, base cuneate, veins close-set, 12–18 pairs of primary veins, 0.5 mm apart, margins sharply antrorsely serrate, apex acute, long-apiculate, surfaces usually glabrous, rarely midvein pubescent abaxially.

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

involucres absent.

terminal, 8–18-flowered, globose or subglobose, 1.2–2.5 × 2–3 cm;

involucres absent.

1–1.5 cm.

0.5–3.5 cm, pubescent.

reflexed, 0.2–0.5 mm;

bracteoles a fringe of red setae.

reflexed, 2–3.5 mm, pubescent;

bracteoles broad, membranous, 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.

8–13 mm;

calyx campanulate, 4–6 mm, pubescent, veins 5–10, tube 1.5–2.5 mm, lobes subequal, narrowly triangular-subulate, orifice open;

corolla creamy white, 8–13 mm, banner broadly elliptic-oblong, 10–13 × 6–8 mm, apex rounded, slightly apiculate.

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

stipitate, flattened, ovoid, 2–3.5 mm.

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

1, yellow, mottled, flattened-ovoid, 2 mm, smooth.

= 16, 28, 32.