Flora of North America species comparison

decumbent or erect, branched.

creeping, branched, rooting at nodes.

palmate;

stipules ovate-lanceolate, 0.5–1.1 cm, margins toothed or lacerate, apex acute-acuminate;

petiole 1–10 cm;

petiolules to 0.5 mm;

leaflets 3, blades oblanceolate or obovate, 1.5–2.5 × 0.4–0.7 cm, base cuneate, veins fine, thickened distally, margins ± serrate or entire, apex rounded or retuse, surfaces pubescent or 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 or terminal, 5–20-flowered, subglobose or globose, 0.6–1.5 × 1–1.5 cm;

involucres bowl-shaped, 5–15 mm, lobes 6–10, sharply setaceous-toothed, sinuses shallow.

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.

5–10 cm.

chasmogamous 6–8 cm, cleistogamous ± sessile.

straight, 0.2 mm;

bracteoles absent.

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

bracteoles lanceolate, 2–4 mm.

4–6 mm;

calyx campanulate, 5–9 mm, usually pubescent, rarely glabrous, veins 5, tube 2–3 mm, lobes ± equal, setaceous, often exceeding banner, orifice open;

corolla usually lavender to purple, usually with white tips, rarely wholly white, 5–8 mm, banner broadly oblong, proximally inflated in fruit, distally narrowed into twisted tip, 6–8 × 6–8 mm, apex broadly acute.

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.

ovoid-ellipsoid, 2–3 mm.

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

1 or 2, brown, ellipsoid to subglobose, 1–1.5 mm, slightly roughened.

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

= 16.

= 16, 32.