Flora of North America species comparison

erect to prostrate, branched from base.

erect or ascending, 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, 0.5–2.5 cm, margins entire or slightly serrate, apex acuminate;

petiole 0.5–5 cm;

petiolules to 1 mm;

leaflets 3, blades narrowly elliptic or lanceolate, 0.8–3 × 0.3–0.8 cm, base cuneate, veins thickened, margins setose-serrulate, apex acute, surfaces glabrous.

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

involucres absent.

axillary or terminal, 10–20-flowered, globose to subglobose, 0.5–2 × 0.5–2 cm, rachis prolonged beyond flowers;

involucres absent.

1–1.5 cm.

1–5 cm.

reflexed, 0.2–0.5 mm;

bracteoles a fringe of red setae.

becoming dramatically reflexed, 3–4 mm;

bracteoles low, broadly triangular, membranous, to 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.

5–9 mm;

calyx narrowly campanulate, 5–6.5 mm, glabrous, veins 10, tube 2–3 mm, lobes unequal, narrowly triangular to acicular, margins green or purple, membranous, orifice open;

corolla pink or purple, 5–9 mm, banner narrowly elliptic-oblong, 5–9 × 3–4 mm, apex narrowly rounded to acute.

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

ovoid-ellipsoid, 4–6 mm.

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

1 or 2, yellow, purple-mottled, mitten-shaped, 2 mm, smooth.

= 16, 28, 32.

= 16.