Flora of North America species comparison

decumbent or ascending, branched.

creeping, branched, rooting at nodes.

palmate;

stipules lanceolate to ovate, 0.4–1.8 cm, margins lacerate, apex acute to acuminate;

petiole 0.5–6 cm;

petiolules to 1 mm;

leaflets 3, blades broadly elliptic to broadly obovate, 0.4–2.5 × 0.4–1.5 cm, base cuneate, veins moderately thickened, margins dentate-serrulate, apex rounded or truncate, often retuse, surfaces glabrous.

palmate;

stipules ovate-lanceolate, 0.5–1 cm, margins entire, apex acute to acuminate;

petiole 3–10 cm;

petiolules 0.5–1 mm;

leaflets 3, blades obcordate, 0.5–1.8 × 0.5–1.5 cm, base cuneate, veins thickened, margins entire or denticulate distally, apex usually deeply emarginate, rarely rounded, surfaces glabrous.

axillary, 10–25-flowered, subglobose or globose, 1–1.8 × 1–1.8 cm;

involucres flattened or bowl-shaped, 4–7 mm, incised 1/2 their length, when folded, not hiding flowers except proximally, lobes 5–12, dentate-lacerate, spinulose.

axillary, 5–20-flowered, globose, 1–2.2 × 1–20 cm, chasmogamous erect, cleistogamous becoming subterranean;

involucres formed of distinct, narrowly lanceolate bracts, 2.5–3.5 mm.

1–2 cm.

chasmogamous 6–8 cm, cleistogamous ± sessile.

straight, to 1 mm;

bracteoles absent.

reflexed in fruit, cleistogamous pushing fruit underground, chasmogamous 1–8 mm, cleistogamous 4–20 mm;

bracteoles lanceolate, 2–4 mm.

8–10 mm;

calyx campanulate-tubular, not slit between adaxial lobes, 5–7 mm, glabrous, veins 20, tube 1.9–2.4 mm, lobes unequal, 3-fid or laciniate, often appearing 7+-lobed, orifice open;

corolla pink or pale purple, 8–9 mm, banner elliptic, 8–9 × 2–3 mm, apex retuse.

chasmogamous 8–11 mm, cleistogamous 4–5 mm;

calyx campanulate, 3–5 mm, slightly pilose, veins 10, tube 1.5–2 mm, lobes subequal, adaxial pair connate proximally, sometimes nearly entire length, narrowly triangular-subulate, orifice open;

corolla magenta or pink, 7.5–11 mm, banner broadly obovate-elliptic, 5–10 × 5–8 mm, apex rounded, emarginate.

ellipsoid, 3.5–4 mm.

stipitate, chasmogamous ellipsoid, cleistogamous ovoid-globose, chasmogamous longitudinally dehiscent, 3–6 mm, cleistogamous indehiscent, 3–6 mm.

2, dark brown, mottled, ovoid or reniform, 1.7–1.9 mm, smooth.

2–6 (chasmogamous), 1–3 (cleistogamous), tan, mitten-shaped, 1.2–1.5 mm, smooth.

= 16, 32.