Flora of North America species comparison

erect to prostrate, branched from base.

prostrate, ascending, or erect, 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, 0.6–1 cm, margins entire or serrate, apex acuminate;

petiole 2–5 cm;

petiolules 1 mm;

leaflets 3, blades obovate, 0.6–1.4 × 0.3–1.1 cm, base cuneate, veins moderately thickened, margins denticulate, apex rounded, sometimes retuse, surfaces glabrous except on veins abaxially.

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

involucres absent.

axillary or terminal, 5–40-flowered, globose, 1–2 × 1–2 cm;

involucres minute.

1–1.5 cm.

± geniculate proximal to flowers, inflorescence appearing sideways or inverted, 3.5–10 cm.

reflexed, 0.2–0.5 mm;

bracteoles a fringe of red setae.

reflexed, 2–3 mm;

bracteoles ovate or lanceolate, 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.

4.5–7 mm;

calyx usually pink to magenta, campanulate, bilabiate, 3–4 mm, pilose, veins 5, slightly branched in lobes, tube 0.8–1 mm, lobes unequal, abaxial 3 lanceolate or linear, 0.8–1 mm, villous, adaxial 2 broadly triangular, 2.5–3 mm, orifice open;

corolla creamy white, often pink-tinged, darkening in age, 4–4.5 mm, banner broadly ovate-rhombic, 4–4.5 × 3.8–4 mm, apex rounded, slightly erose.

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

oblong, 3–4 mm.

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

2–4, yellow-brown to brown, globose to mitten-shaped, 1.1–1.6 mm, rugose.

= 16, 28, 32.

= 16.